[libcxx-commits] [libcxxabi] [libc++] [libc++abi] Initialize exception directly in make_exception_ptr if __cxa_init_primary_exception is available in ABI-library (PR #65534)
via libcxx-commits
libcxx-commits at lists.llvm.org
Fri Oct 20 23:16:27 PDT 2023
https://github.com/itrofimow updated https://github.com/llvm/llvm-project/pull/65534
>From 48298b86a13736e37a052b59ad45cd15066fc2be Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 23 Aug 2023 17:05:14 +0300
Subject: [PATCH 01/47] [libcxx] [libcxxabi] don't throw+catch in
std::make_exception_ptr, if possible
Differential Revision: https://reviews.llvm.org/D158620
---
libcxx/include/__exception/exception_ptr.h | 27 +++++++++++++++++++
.../runtime/exception_pointer_cxxabi.ipp | 18 +++++++++++++
libcxxabi/include/cxxabi.h | 7 +++++
libcxxabi/src/cxa_exception.cpp | 25 ++++++++++-------
4 files changed, 68 insertions(+), 9 deletions(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 970d8196724b7cb..1db0a24be228023 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -14,6 +14,8 @@
#include <__memory/addressof.h>
#include <cstddef>
#include <cstdlib>
+#include <typeinfo>
+#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
@@ -26,6 +28,18 @@ namespace std { // purposefully not using versioning namespace
class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
void* __ptr_;
+ template <class _Ep>
+ static inline void __dest_thunk(void *__x) {
+ static_cast<_Ep*>(__x)->~_Ep();
+ }
+
+ static void *init_ex(size_t, std::type_info*, void (*)(void *)) _NOEXCEPT;
+ static void free_ex(void *) _NOEXCEPT;
+ static exception_ptr from_ex_ptr(void *__e) _NOEXCEPT;
+
+ template <class _Ep>
+ friend _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep) _NOEXCEPT;
+
public:
_LIBCPP_HIDE_FROM_ABI exception_ptr() _NOEXCEPT : __ptr_() {}
_LIBCPP_HIDE_FROM_ABI exception_ptr(nullptr_t) _NOEXCEPT : __ptr_() {}
@@ -51,11 +65,24 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
template <class _Ep>
_LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
+# if defined(LIBCXX_BUILDING_LIBCXXABI)
+ using _Ep2 = typename decay<_Ep>::type;
+ void *__ex = exception_ptr::init_ex(
+ sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
+ try {
+ ::new (__ex) _Ep2(__e);
+ return exception_ptr::from_ex_ptr(__ex);
+ } catch (...) {
+ exception_ptr::free_ex(__ex);
+ return current_exception();
+ }
+# else
try {
throw __e;
} catch (...) {
return current_exception();
}
+# endif
# else
((void)__e);
std::abort();
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index 33aa94502b73c9d..277c5b867f679a8 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -34,6 +34,24 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
return *this;
}
+void *exception_ptr::init_ex(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept {
+ void *__ex = __cxa_allocate_exception(size);
+ (void)__cxa_init_primary_exception(__ex, tinfo, dest);
+ return __ex;
+}
+
+void exception_ptr::free_ex(void *thrown_object) noexcept {
+ __cxa_free_exception(thrown_object);
+}
+
+exception_ptr exception_ptr::from_ex_ptr(void *__e) noexcept {
+ exception_ptr ptr;
+ ptr.__ptr_ = __e;
+ __cxa_increment_exception_refcount(ptr.__ptr_);
+
+ return ptr;
+}
+
nested_exception::nested_exception() noexcept
: __ptr_(current_exception())
{
diff --git a/libcxxabi/include/cxxabi.h b/libcxxabi/include/cxxabi.h
index 6f4f823bc273ff3..3fae04e35c39dbd 100644
--- a/libcxxabi/include/cxxabi.h
+++ b/libcxxabi/include/cxxabi.h
@@ -36,6 +36,9 @@ class type_info; // forward declaration
// runtime routines use C calling conventions, but are in __cxxabiv1 namespace
namespace __cxxabiv1 {
+
+struct __cxa_exception;
+
extern "C" {
// 2.4.2 Allocating the Exception Object
@@ -43,6 +46,10 @@ extern _LIBCXXABI_FUNC_VIS void *
__cxa_allocate_exception(size_t thrown_size) throw();
extern _LIBCXXABI_FUNC_VIS void
__cxa_free_exception(void *thrown_exception) throw();
+// This function is an llvm extension
+extern _LIBCXXABI_FUNC_VIS __cxa_exception *
+__cxa_init_primary_exception(void *object, std::type_info* tinfo,
+ void (_LIBCXXABI_DTOR_FUNC *dest)(void *)) throw();
// 2.4.3 Throwing the Exception Object
extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
diff --git a/libcxxabi/src/cxa_exception.cpp b/libcxxabi/src/cxa_exception.cpp
index f723ececfe3327a..d3c445f2c10ac8d 100644
--- a/libcxxabi/src/cxa_exception.cpp
+++ b/libcxxabi/src/cxa_exception.cpp
@@ -206,6 +206,20 @@ void __cxa_free_exception(void *thrown_object) throw() {
__aligned_free_with_fallback((void *)raw_buffer);
}
+__cxa_exception *__cxa_init_primary_exception(void *object, std::type_info* tinfo,
+ void (_LIBCXXABI_DTOR_FUNC *dest)(void *)) throw() {
+ __cxa_exception* exception_header = cxa_exception_from_thrown_object(object);
+ exception_header->referenceCount = 0;
+ exception_header->unexpectedHandler = std::get_unexpected();
+ exception_header->terminateHandler = std::get_terminate();
+ exception_header->exceptionType = tinfo;
+ exception_header->exceptionDestructor = dest;
+ setOurExceptionClass(&exception_header->unwindHeader);
+ exception_header->unwindHeader.exception_cleanup = exception_cleanup_func;
+
+ return exception_header;
+}
+
// This function shall allocate a __cxa_dependent_exception and
// return a pointer to it. (Really to the object, not past its' end).
@@ -261,17 +275,10 @@ __cxa_throw(void *thrown_object, std::type_info *tinfo, void *(_LIBCXXABI_DTOR_F
__cxa_throw(void *thrown_object, std::type_info *tinfo, void (_LIBCXXABI_DTOR_FUNC *dest)(void *)) {
#endif
__cxa_eh_globals *globals = __cxa_get_globals();
- __cxa_exception* exception_header = cxa_exception_from_thrown_object(thrown_object);
-
- exception_header->unexpectedHandler = std::get_unexpected();
- exception_header->terminateHandler = std::get_terminate();
- exception_header->exceptionType = tinfo;
- exception_header->exceptionDestructor = dest;
- setOurExceptionClass(&exception_header->unwindHeader);
- exception_header->referenceCount = 1; // This is a newly allocated exception, no need for thread safety.
globals->uncaughtExceptions += 1; // Not atomically, since globals are thread-local
- exception_header->unwindHeader.exception_cleanup = exception_cleanup_func;
+ __cxa_exception *exception_header = __cxa_init_primary_exception(thrown_object, tinfo, dest);
+ exception_header->referenceCount = 1; // This is a newly allocated exception, no need for thread safety.
#if __has_feature(address_sanitizer)
// Inform the ASan runtime that now might be a good time to clean stuff up.
>From 79a4995bcb51081f14a5294c584f6b2b4329fb6f Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 23 Aug 2023 17:53:38 +0300
Subject: [PATCH 02/47] + clang-format
---
libcxx/include/__exception/exception_ptr.h | 22 +++++++++++-----------
libcxxabi/include/cxxabi.h | 5 ++---
libcxxabi/src/cxa_exception.cpp | 13 ++++++-------
3 files changed, 19 insertions(+), 21 deletions(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 1db0a24be228023..6ca4e9314f1bd14 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -14,8 +14,8 @@
#include <__memory/addressof.h>
#include <cstddef>
#include <cstdlib>
-#include <typeinfo>
#include <type_traits>
+#include <typeinfo>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
@@ -29,13 +29,13 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
void* __ptr_;
template <class _Ep>
- static inline void __dest_thunk(void *__x) {
- static_cast<_Ep*>(__x)->~_Ep();
+ static inline void __dest_thunk(void* __x) {
+ static_cast<_Ep*>(__x)->~_Ep();
}
- static void *init_ex(size_t, std::type_info*, void (*)(void *)) _NOEXCEPT;
- static void free_ex(void *) _NOEXCEPT;
- static exception_ptr from_ex_ptr(void *__e) _NOEXCEPT;
+ static void* init_ex(size_t, std::type_info*, void (*)(void*)) _NOEXCEPT;
+ static void free_ex(void*) _NOEXCEPT;
+ static exception_ptr from_ex_ptr(void* __e) _NOEXCEPT;
template <class _Ep>
friend _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep) _NOEXCEPT;
@@ -65,10 +65,10 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
template <class _Ep>
_LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
-# if defined(LIBCXX_BUILDING_LIBCXXABI)
+# if defined(LIBCXX_BUILDING_LIBCXXABI)
using _Ep2 = typename decay<_Ep>::type;
- void *__ex = exception_ptr::init_ex(
- sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
+ void* __ex =
+ exception_ptr::init_ex(sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
try {
::new (__ex) _Ep2(__e);
return exception_ptr::from_ex_ptr(__ex);
@@ -76,13 +76,13 @@ _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
exception_ptr::free_ex(__ex);
return current_exception();
}
-# else
+# else
try {
throw __e;
} catch (...) {
return current_exception();
}
-# endif
+# endif
# else
((void)__e);
std::abort();
diff --git a/libcxxabi/include/cxxabi.h b/libcxxabi/include/cxxabi.h
index 3fae04e35c39dbd..03ec7986e209126 100644
--- a/libcxxabi/include/cxxabi.h
+++ b/libcxxabi/include/cxxabi.h
@@ -47,9 +47,8 @@ __cxa_allocate_exception(size_t thrown_size) throw();
extern _LIBCXXABI_FUNC_VIS void
__cxa_free_exception(void *thrown_exception) throw();
// This function is an llvm extension
-extern _LIBCXXABI_FUNC_VIS __cxa_exception *
-__cxa_init_primary_exception(void *object, std::type_info* tinfo,
- void (_LIBCXXABI_DTOR_FUNC *dest)(void *)) throw();
+extern _LIBCXXABI_FUNC_VIS __cxa_exception*
+__cxa_init_primary_exception(void* object, std::type_info* tinfo, void(_LIBCXXABI_DTOR_FUNC* dest)(void*)) throw();
// 2.4.3 Throwing the Exception Object
extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
diff --git a/libcxxabi/src/cxa_exception.cpp b/libcxxabi/src/cxa_exception.cpp
index d3c445f2c10ac8d..1e72d7f34f26a21 100644
--- a/libcxxabi/src/cxa_exception.cpp
+++ b/libcxxabi/src/cxa_exception.cpp
@@ -206,12 +206,12 @@ void __cxa_free_exception(void *thrown_object) throw() {
__aligned_free_with_fallback((void *)raw_buffer);
}
-__cxa_exception *__cxa_init_primary_exception(void *object, std::type_info* tinfo,
- void (_LIBCXXABI_DTOR_FUNC *dest)(void *)) throw() {
+__cxa_exception* __cxa_init_primary_exception(void* object, std::type_info* tinfo,
+ void(_LIBCXXABI_DTOR_FUNC* dest)(void*)) throw() {
__cxa_exception* exception_header = cxa_exception_from_thrown_object(object);
exception_header->referenceCount = 0;
exception_header->unexpectedHandler = std::get_unexpected();
- exception_header->terminateHandler = std::get_terminate();
+ exception_header->terminateHandler = std::get_terminate();
exception_header->exceptionType = tinfo;
exception_header->exceptionDestructor = dest;
setOurExceptionClass(&exception_header->unwindHeader);
@@ -220,7 +220,6 @@ __cxa_exception *__cxa_init_primary_exception(void *object, std::type_info* tinf
return exception_header;
}
-
// This function shall allocate a __cxa_dependent_exception and
// return a pointer to it. (Really to the object, not past its' end).
// Otherwise, it will work like __cxa_allocate_exception.
@@ -274,11 +273,11 @@ __cxa_throw(void *thrown_object, std::type_info *tinfo, void *(_LIBCXXABI_DTOR_F
#else
__cxa_throw(void *thrown_object, std::type_info *tinfo, void (_LIBCXXABI_DTOR_FUNC *dest)(void *)) {
#endif
- __cxa_eh_globals *globals = __cxa_get_globals();
+ __cxa_eh_globals* globals = __cxa_get_globals();
globals->uncaughtExceptions += 1; // Not atomically, since globals are thread-local
- __cxa_exception *exception_header = __cxa_init_primary_exception(thrown_object, tinfo, dest);
- exception_header->referenceCount = 1; // This is a newly allocated exception, no need for thread safety.
+ __cxa_exception* exception_header = __cxa_init_primary_exception(thrown_object, tinfo, dest);
+ exception_header->referenceCount = 1; // This is a newly allocated exception, no need for thread safety.
#if __has_feature(address_sanitizer)
// Inform the ASan runtime that now might be a good time to clean stuff up.
>From 9f41ef23b46cb60992fbfc7c63e81d33710110a8 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 23 Aug 2023 20:18:45 +0300
Subject: [PATCH 03/47] cleanup
---
libcxx/include/CMakeLists.txt | 1 +
libcxx/include/__exception/exception_ptr.h | 18 +-
libcxx/include/__typeinfo/typeinfo.h | 333 ++++++++++++++++++
libcxx/include/module.modulemap.in | 2 +
libcxx/include/typeinfo | 9 +-
.../runtime/exception_pointer_cxxabi.ipp | 21 +-
6 files changed, 361 insertions(+), 23 deletions(-)
create mode 100644 libcxx/include/__typeinfo/typeinfo.h
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
index 9b03430a87d8338..1407c7a84a742b3 100644
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -694,6 +694,7 @@ set(files
__tuple/tuple_like_ext.h
__tuple/tuple_size.h
__tuple/tuple_types.h
+ __typeinfo/typeinfo.h
__type_traits/add_const.h
__type_traits/add_cv.h
__type_traits/add_lvalue_reference.h
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 6ca4e9314f1bd14..0e5310c767cbe92 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -12,10 +12,10 @@
#include <__config>
#include <__exception/operations.h>
#include <__memory/addressof.h>
+#include <__typeinfo/typeinfo.h>
#include <cstddef>
#include <cstdlib>
#include <type_traits>
-#include <typeinfo>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
@@ -28,17 +28,19 @@ namespace std { // purposefully not using versioning namespace
class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
void* __ptr_;
+# if defined(LIBCXX_BUILDING_LIBCXXABI)
template <class _Ep>
static inline void __dest_thunk(void* __x) {
static_cast<_Ep*>(__x)->~_Ep();
}
- static void* init_ex(size_t, std::type_info*, void (*)(void*)) _NOEXCEPT;
- static void free_ex(void*) _NOEXCEPT;
- static exception_ptr from_ex_ptr(void* __e) _NOEXCEPT;
+ static void* __init_native_exception(size_t, std::type_info*, void (*)(void*)) _NOEXCEPT;
+ static void __free_native_exception(void*) _NOEXCEPT;
+ static exception_ptr __from_native_exception_pointer(void* __e) _NOEXCEPT;
template <class _Ep>
friend _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep) _NOEXCEPT;
+# endif
public:
_LIBCPP_HIDE_FROM_ABI exception_ptr() _NOEXCEPT : __ptr_() {}
@@ -67,13 +69,13 @@ _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
# if defined(LIBCXX_BUILDING_LIBCXXABI)
using _Ep2 = typename decay<_Ep>::type;
- void* __ex =
- exception_ptr::init_ex(sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
+ void* __ex = exception_ptr::__init_native_exception(
+ sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
try {
::new (__ex) _Ep2(__e);
- return exception_ptr::from_ex_ptr(__ex);
+ return exception_ptr::__from_native_exception_pointer(__ex);
} catch (...) {
- exception_ptr::free_ex(__ex);
+ exception_ptr::__free_native_exception(__ex);
return current_exception();
}
# else
diff --git a/libcxx/include/__typeinfo/typeinfo.h b/libcxx/include/__typeinfo/typeinfo.h
new file mode 100644
index 000000000000000..64b50711bbfd4e4
--- /dev/null
+++ b/libcxx/include/__typeinfo/typeinfo.h
@@ -0,0 +1,333 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___TYPEINFO_TYPEINFO_H
+#define _LIBCPP___TYPEINFO_TYPEINFO_H
+
+#include <__availability>
+#include <__config>
+#include <__exception/exception.h>
+#include <__type_traits/is_constant_evaluated.h>
+#include <__verbose_abort>
+#include <cstddef>
+#include <cstdint>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+#if defined(_LIBCPP_ABI_VCRUNTIME)
+# include <vcruntime_typeinfo.h>
+#else
+
+namespace std // purposefully not using versioning namespace
+{
+
+# if defined(_LIBCPP_ABI_MICROSOFT)
+
+class _LIBCPP_EXPORTED_FROM_ABI type_info {
+ type_info& operator=(const type_info&);
+ type_info(const type_info&);
+
+ mutable struct {
+ const char* __undecorated_name;
+ const char __decorated_name[1];
+ } __data;
+
+ int __compare(const type_info& __rhs) const _NOEXCEPT;
+
+public:
+ _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE
+ virtual ~type_info();
+
+ const char* name() const _NOEXCEPT;
+
+ _LIBCPP_INLINE_VISIBILITY bool before(const type_info& __arg) const _NOEXCEPT { return __compare(__arg) < 0; }
+
+ size_t hash_code() const _NOEXCEPT;
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX23 bool operator==(const type_info& __arg) const _NOEXCEPT {
+ // When evaluated in a constant expression, both type infos simply can't come
+ // from different translation units, so it is sufficient to compare their addresses.
+ if (__libcpp_is_constant_evaluated()) {
+ return this == &__arg;
+ }
+ return __compare(__arg) == 0;
+ }
+
+# if _LIBCPP_STD_VER <= 17
+ _LIBCPP_INLINE_VISIBILITY bool operator!=(const type_info& __arg) const _NOEXCEPT { return !operator==(__arg); }
+# endif
+};
+
+# else // !defined(_LIBCPP_ABI_MICROSOFT)
+
+// ========================================================================== //
+// Implementations
+// ========================================================================== //
+// ------------------------------------------------------------------------- //
+// Unique
+// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 1)
+// ------------------------------------------------------------------------- //
+// This implementation of type_info assumes a unique copy of the RTTI for a
+// given type inside a program. This is a valid assumption when abiding to the
+// Itanium ABI (http://itanium-cxx-abi.github.io/cxx-abi/abi.html#vtable-components).
+// Under this assumption, we can always compare the addresses of the type names
+// to implement equality-comparison of type_infos instead of having to perform
+// a deep string comparison.
+// -------------------------------------------------------------------------- //
+// NonUnique
+// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 2)
+// -------------------------------------------------------------------------- //
+// This implementation of type_info does not assume there is always a unique
+// copy of the RTTI for a given type inside a program. For various reasons
+// the linker may have failed to merge every copy of a types RTTI
+// (For example: -Bsymbolic or llvm.org/PR37398). Under this assumption, two
+// type_infos are equal if their addresses are equal or if a deep string
+// comparison is equal.
+// -------------------------------------------------------------------------- //
+// NonUniqueARMRTTIBit
+// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 3)
+// -------------------------------------------------------------------------- //
+// This implementation is specific to ARM64 on Apple platforms.
+//
+// This implementation of type_info does not assume always a unique copy of
+// the RTTI for a given type inside a program. When constructing the type_info,
+// the compiler packs the pointer to the type name into a uintptr_t and reserves
+// the high bit of that pointer, which is assumed to be free for use under that
+// ABI. If that high bit is set, that specific copy of the RTTI can't be assumed
+// to be unique within the program. If the high bit is unset, then the RTTI can
+// be assumed to be unique within the program.
+//
+// When comparing type_infos, if both RTTIs can be assumed to be unique, it
+// suffices to compare their addresses. If both the RTTIs can't be assumed to
+// be unique, we must perform a deep string comparison of the type names.
+// However, if one of the RTTIs is guaranteed unique and the other one isn't,
+// then both RTTIs are necessarily not to be considered equal.
+//
+// The intent of this design is to remove the need for weak symbols. Specifically,
+// if a type would normally have a default-visibility RTTI emitted as a weak
+// symbol, it is given hidden visibility instead and the non-unique bit is set.
+// Otherwise, types declared with hidden visibility are always considered to have
+// a unique RTTI: the RTTI is emitted with linkonce_odr linkage and is assumed
+// to be deduplicated by the linker within the linked image. Across linked image
+// boundaries, such types are thus considered different types.
+
+// This value can be overriden in the __config_site. When it's not overriden,
+// we pick a default implementation based on the platform here.
+# ifndef _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION
+
+// Windows and AIX binaries can't merge typeinfos, so use the NonUnique implementation.
+# if defined(_LIBCPP_OBJECT_FORMAT_COFF) || defined(_LIBCPP_OBJECT_FORMAT_XCOFF)
+# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 2
+
+// On arm64 on Apple platforms, use the special NonUniqueARMRTTIBit implementation.
+# elif defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__)
+# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 3
+
+// On all other platforms, assume the Itanium C++ ABI and use the Unique implementation.
+# else
+# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 1
+# endif
+# endif
+
+struct __type_info_implementations {
+ struct __string_impl_base {
+ typedef const char* __type_name_t;
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR static const char*
+ __type_name_to_string(__type_name_t __v) _NOEXCEPT {
+ return __v;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR static __type_name_t
+ __string_to_type_name(const char* __v) _NOEXCEPT {
+ return __v;
+ }
+ };
+
+ struct __unique_impl : __string_impl_base {
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static size_t __hash(__type_name_t __v) _NOEXCEPT {
+ return reinterpret_cast<size_t>(__v);
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
+ __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ return __lhs == __rhs;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
+ __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ return __lhs < __rhs;
+ }
+ };
+
+ struct __non_unique_impl : __string_impl_base {
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static size_t __hash(__type_name_t __ptr) _NOEXCEPT {
+ size_t __hash = 5381;
+ while (unsigned char __c = static_cast<unsigned char>(*__ptr++))
+ __hash = (__hash * 33) ^ __c;
+ return __hash;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
+ __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ return __lhs == __rhs || __builtin_strcmp(__lhs, __rhs) == 0;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
+ __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ return __builtin_strcmp(__lhs, __rhs) < 0;
+ }
+ };
+
+ struct __non_unique_arm_rtti_bit_impl {
+ typedef uintptr_t __type_name_t;
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static const char*
+ __type_name_to_string(__type_name_t __v) _NOEXCEPT {
+ return reinterpret_cast<const char*>(__v & ~__non_unique_rtti_bit::value);
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static __type_name_t
+ __string_to_type_name(const char* __v) _NOEXCEPT {
+ return reinterpret_cast<__type_name_t>(__v);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static size_t __hash(__type_name_t __v) _NOEXCEPT {
+ if (__is_type_name_unique(__v))
+ return __v;
+ return __non_unique_impl::__hash(__type_name_to_string(__v));
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
+ __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ if (__lhs == __rhs)
+ return true;
+ if (__is_type_name_unique(__lhs) || __is_type_name_unique(__rhs))
+ // Either both are unique and have a different address, or one of them
+ // is unique and the other one isn't. In both cases they are unequal.
+ return false;
+ return __builtin_strcmp(__type_name_to_string(__lhs), __type_name_to_string(__rhs)) == 0;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
+ __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ if (__is_type_name_unique(__lhs) || __is_type_name_unique(__rhs))
+ return __lhs < __rhs;
+ return __builtin_strcmp(__type_name_to_string(__lhs), __type_name_to_string(__rhs)) < 0;
+ }
+
+ private:
+ // The unique bit is the top bit. It is expected that __type_name_t is 64 bits when
+ // this implementation is actually used.
+ typedef integral_constant<__type_name_t, (1ULL << ((__CHAR_BIT__ * sizeof(__type_name_t)) - 1))>
+ __non_unique_rtti_bit;
+
+ _LIBCPP_INLINE_VISIBILITY static bool __is_type_name_unique(__type_name_t __lhs) _NOEXCEPT {
+ return !(__lhs & __non_unique_rtti_bit::value);
+ }
+ };
+
+ typedef
+# if _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 1
+ __unique_impl
+# elif _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 2
+ __non_unique_impl
+# elif _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 3
+ __non_unique_arm_rtti_bit_impl
+# else
+# error invalid configuration for _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION
+# endif
+ __impl;
+};
+
+class _LIBCPP_EXPORTED_FROM_ABI type_info {
+ type_info& operator=(const type_info&);
+ type_info(const type_info&);
+
+protected:
+ typedef __type_info_implementations::__impl __impl;
+
+ __impl::__type_name_t __type_name;
+
+ _LIBCPP_INLINE_VISIBILITY explicit type_info(const char* __n) : __type_name(__impl::__string_to_type_name(__n)) {}
+
+public:
+ _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE
+ virtual ~type_info();
+
+ _LIBCPP_INLINE_VISIBILITY const char* name() const _NOEXCEPT { return __impl::__type_name_to_string(__type_name); }
+
+ _LIBCPP_INLINE_VISIBILITY bool before(const type_info& __arg) const _NOEXCEPT {
+ return __impl::__lt(__type_name, __arg.__type_name);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY size_t hash_code() const _NOEXCEPT { return __impl::__hash(__type_name); }
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX23 bool operator==(const type_info& __arg) const _NOEXCEPT {
+ // When evaluated in a constant expression, both type infos simply can't come
+ // from different translation units, so it is sufficient to compare their addresses.
+ if (__libcpp_is_constant_evaluated()) {
+ return this == &__arg;
+ }
+ return __impl::__eq(__type_name, __arg.__type_name);
+ }
+
+# if _LIBCPP_STD_VER <= 17
+ _LIBCPP_INLINE_VISIBILITY bool operator!=(const type_info& __arg) const _NOEXCEPT { return !operator==(__arg); }
+# endif
+};
+# endif // defined(_LIBCPP_ABI_MICROSOFT)
+
+class _LIBCPP_EXPORTED_FROM_ABI bad_cast : public exception {
+public:
+ bad_cast() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI bad_cast(const bad_cast&) _NOEXCEPT = default;
+ ~bad_cast() _NOEXCEPT override;
+ const char* what() const _NOEXCEPT override;
+};
+
+class _LIBCPP_EXPORTED_FROM_ABI bad_typeid : public exception {
+public:
+ bad_typeid() _NOEXCEPT;
+ ~bad_typeid() _NOEXCEPT override;
+ const char* what() const _NOEXCEPT override;
+};
+
+} // namespace std
+
+#endif // defined(_LIBCPP_ABI_VCRUNTIME)
+
+#if defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
+
+namespace std {
+
+class bad_cast : public exception {
+public:
+ bad_cast() _NOEXCEPT : exception("bad cast") {}
+
+private:
+ bad_cast(const char* const __message) _NOEXCEPT : exception(__message) {}
+};
+
+class bad_typeid : public exception {
+public:
+ bad_typeid() _NOEXCEPT : exception("bad typeid") {}
+
+private:
+ bad_typeid(const char* const __message) _NOEXCEPT : exception(__message) {}
+};
+
+} // namespace std
+
+#endif // defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY void __throw_bad_cast() {
+#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
+ throw bad_cast();
+#else
+ _LIBCPP_VERBOSE_ABORT("bad_cast was thrown in -fno-exceptions mode");
+#endif
+}
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___TYPEINFO_TYPEINFO_H
diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
index 3e5a8a391b6e69c..44ec9f29cd3b603 100644
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -1267,6 +1267,8 @@ module std_private_debug_utils_strict_weak_ordering_check [system] {
export std_private_type_traits_is_constant_evaluated
}
+module std_private_typeinfo_typeinfo [system] { header "__typeinfo/typeinfo.h" }
+
module std_private_exception_exception [system] { header "__exception/exception.h" }
module std_private_exception_exception_ptr [system] {
header "__exception/exception_ptr.h"
diff --git a/libcxx/include/typeinfo b/libcxx/include/typeinfo
index 59bc291454c3d90..61872a1510b313d 100644
--- a/libcxx/include/typeinfo
+++ b/libcxx/include/typeinfo
@@ -57,18 +57,15 @@ public:
*/
#include <__assert> // all public C++ headers provide the assertion handler
-#include <__availability>
#include <__config>
-#include <__exception/exception.h>
-#include <__type_traits/is_constant_evaluated.h>
-#include <__verbose_abort>
-#include <cstddef>
-#include <cstdint>
+#include <__typeinfo/typeinfo.h>
+#include <version>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
+<<<<<<< HEAD
#if defined(_LIBCPP_ABI_VCRUNTIME)
#include <vcruntime_typeinfo.h>
#else
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index 277c5b867f679a8..f8ad08c11b736b9 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -13,8 +13,9 @@
namespace std {
-exception_ptr::~exception_ptr() noexcept {
- __cxa_decrement_exception_refcount(__ptr_);
+exception_ptr::~exception_ptr() noexcept
+{
+ __cxa_decrement_exception_refcount(__ptr_);
}
exception_ptr::exception_ptr(const exception_ptr& other) noexcept
@@ -34,17 +35,19 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
return *this;
}
-void *exception_ptr::init_ex(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept {
- void *__ex = __cxa_allocate_exception(size);
- (void)__cxa_init_primary_exception(__ex, tinfo, dest);
- return __ex;
+void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
+{
+ void *__ex = __cxa_allocate_exception(size);
+ (void)__cxa_init_primary_exception(__ex, tinfo, dest);
+ return __ex;
}
-void exception_ptr::free_ex(void *thrown_object) noexcept {
- __cxa_free_exception(thrown_object);
+void exception_ptr::__free_native_exception(void *thrown_object) noexcept
+{
+ __cxa_free_exception(thrown_object);
}
-exception_ptr exception_ptr::from_ex_ptr(void *__e) noexcept {
+exception_ptr exception_ptr::__from_native_exception_pointer(void *__e) noexcept {
exception_ptr ptr;
ptr.__ptr_ = __e;
__cxa_increment_exception_refcount(ptr.__ptr_);
>From 91fc2331964d4358941ba3c34fa551e4add09c07 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 23 Aug 2023 22:37:40 +0300
Subject: [PATCH 04/47] + clang-format, fix libcxx.imp
---
libcxx/include/__typeinfo/typeinfo.h | 2 +-
libcxx/include/libcxx.imp | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/libcxx/include/__typeinfo/typeinfo.h b/libcxx/include/__typeinfo/typeinfo.h
index 64b50711bbfd4e4..ac3550be0842e54 100644
--- a/libcxx/include/__typeinfo/typeinfo.h
+++ b/libcxx/include/__typeinfo/typeinfo.h
@@ -294,7 +294,7 @@ class _LIBCPP_EXPORTED_FROM_ABI bad_typeid : public exception {
} // namespace std
-#endif // defined(_LIBCPP_ABI_VCRUNTIME)
+#endif // defined(_LIBCPP_ABI_VCRUNTIME)
#if defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
diff --git a/libcxx/include/libcxx.imp b/libcxx/include/libcxx.imp
index 3eb2aa849314824..f7e906e024f33a4 100644
--- a/libcxx/include/libcxx.imp
+++ b/libcxx/include/libcxx.imp
@@ -48,6 +48,7 @@
{ include: [ "@<__thread/.*>", "private", "<thread>", "public" ] },
{ include: [ "@<__tuple/.*>", "private", "<tuple>", "public" ] },
{ include: [ "@<__type_traits/.*>", "private", "<type_traits>", "public" ] },
+ { include: [ "@<__typeinfo/.*>", "private", "<typeinfo>", "public" ] },
{ include: [ "@<__utility/.*>", "private", "<utility>", "public" ] },
{ include: [ "@<__variant/.*>", "private", "<variant>", "public" ] },
]
>From e299d7053db565faaee9eee5cbd17f13dbf2e887 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Tue, 29 Aug 2023 14:36:53 +0300
Subject: [PATCH 05/47] wip on making the build green
---
libcxx/include/CMakeLists.txt | 2 +-
libcxx/utils/data/ignore_format.txt | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
index 1407c7a84a742b3..482577069bd36ee 100644
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -694,7 +694,6 @@ set(files
__tuple/tuple_like_ext.h
__tuple/tuple_size.h
__tuple/tuple_types.h
- __typeinfo/typeinfo.h
__type_traits/add_const.h
__type_traits/add_cv.h
__type_traits/add_lvalue_reference.h
@@ -833,6 +832,7 @@ set(files
__type_traits/underlying_type.h
__type_traits/unwrap_ref.h
__type_traits/void_t.h
+ __typeinfo/typeinfo.h
__undef_macros
__utility/as_const.h
__utility/auto_cast.h
diff --git a/libcxx/utils/data/ignore_format.txt b/libcxx/utils/data/ignore_format.txt
index 664e9f51e9ba7fd..3109f4884af1499 100644
--- a/libcxx/utils/data/ignore_format.txt
+++ b/libcxx/utils/data/ignore_format.txt
@@ -462,6 +462,7 @@ libcxx/include/__tuple/tuple_indices.h
libcxx/include/__tuple/tuple_like_ext.h
libcxx/include/__tuple/tuple_size.h
libcxx/include/__tuple/tuple_types.h
+libcxx/include/__typeinfo/typeinfo.h
libcxx/include/typeindex
libcxx/include/typeinfo
libcxx/include/uchar.h
>From 3b90bfa2475f25f0b0ce4aa2e0c563f7cae0f8a1 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Tue, 29 Aug 2023 19:25:34 +0300
Subject: [PATCH 06/47] wip on making the build green
---
libcxx/include/module.modulemap.in | 5 ++++-
libcxx/include/typeinfo | 1 -
libcxx/test/libcxx/transitive_includes/cxx03.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx11.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx14.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx17.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx20.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx23.csv | 3 +++
libcxx/test/libcxx/transitive_includes/cxx26.csv | 3 +++
9 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
index 44ec9f29cd3b603..9c96b84b6263020 100644
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -1267,7 +1267,10 @@ module std_private_debug_utils_strict_weak_ordering_check [system] {
export std_private_type_traits_is_constant_evaluated
}
-module std_private_typeinfo_typeinfo [system] { header "__typeinfo/typeinfo.h" }
+module std_private_typeinfo_typeinfo [system] {
+ header "__typeinfo/typeinfo.h"
+ export *
+}
module std_private_exception_exception [system] { header "__exception/exception.h" }
module std_private_exception_exception_ptr [system] {
diff --git a/libcxx/include/typeinfo b/libcxx/include/typeinfo
index 61872a1510b313d..3a9087f7752fc17 100644
--- a/libcxx/include/typeinfo
+++ b/libcxx/include/typeinfo
@@ -59,7 +59,6 @@ public:
#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>
#include <__typeinfo/typeinfo.h>
-#include <version>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
diff --git a/libcxx/test/libcxx/transitive_includes/cxx03.csv b/libcxx/test/libcxx/transitive_includes/cxx03.csv
index f6aeb837a7292f6..04cc0354714493d 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx03.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx03.csv
@@ -219,6 +219,7 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
+exception cstdint
exception cstdlib
exception type_traits
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx11.csv b/libcxx/test/libcxx/transitive_includes/cxx11.csv
index 08fd94393f47320..47048bef817749c 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx11.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx11.csv
@@ -220,6 +220,7 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
+exception cstdint
exception cstdlib
exception type_traits
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx14.csv b/libcxx/test/libcxx/transitive_includes/cxx14.csv
index 33384a628e65c01..d7c12b65941b5e6 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx14.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx14.csv
@@ -220,6 +220,7 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
+exception cstdint
exception cstdlib
exception type_traits
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx17.csv b/libcxx/test/libcxx/transitive_includes/cxx17.csv
index 33384a628e65c01..d7c12b65941b5e6 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx17.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx17.csv
@@ -220,6 +220,7 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
+exception cstdint
exception cstdlib
exception type_traits
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx20.csv b/libcxx/test/libcxx/transitive_includes/cxx20.csv
index 8f6e8dd646df583..c7189e616402f73 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx20.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx20.csv
@@ -226,6 +226,7 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
+exception cstdint
exception cstdlib
exception type_traits
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx23.csv b/libcxx/test/libcxx/transitive_includes/cxx23.csv
index d0d858056b1b00d..408559119c3a02e 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx23.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx23.csv
@@ -157,7 +157,9 @@ deque stdexcept
deque tuple
deque version
exception cstddef
+exception cstdint
exception cstdlib
+exception type_traits
exception version
execution cstddef
execution version
@@ -289,6 +291,7 @@ future ratio
future stdexcept
future string
future thread
+future type_traits
future typeinfo
future version
initializer_list cstddef
diff --git a/libcxx/test/libcxx/transitive_includes/cxx26.csv b/libcxx/test/libcxx/transitive_includes/cxx26.csv
index d0d858056b1b00d..408559119c3a02e 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx26.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx26.csv
@@ -157,7 +157,9 @@ deque stdexcept
deque tuple
deque version
exception cstddef
+exception cstdint
exception cstdlib
+exception type_traits
exception version
execution cstddef
execution version
@@ -289,6 +291,7 @@ future ratio
future stdexcept
future string
future thread
+future type_traits
future typeinfo
future version
initializer_list cstddef
>From 95cd0bdfa88003f8b6d0f69d21e05fc84819132a Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 30 Aug 2023 11:48:05 +0300
Subject: [PATCH 07/47] regenerate ignore_format.txt
---
libcxx/utils/data/ignore_format.txt | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/libcxx/utils/data/ignore_format.txt b/libcxx/utils/data/ignore_format.txt
index 3109f4884af1499..0d62ab5f39b83eb 100644
--- a/libcxx/utils/data/ignore_format.txt
+++ b/libcxx/utils/data/ignore_format.txt
@@ -122,6 +122,7 @@ libcxx/include/__chrono/literals.h
libcxx/include/__chrono/monthday.h
libcxx/include/__chrono/month.h
libcxx/include/__chrono/month_weekday.h
+libcxx/include/__chrono/statically_widen.h
libcxx/include/__chrono/steady_clock.h
libcxx/include/__chrono/system_clock.h
libcxx/include/__chrono/time_point.h
@@ -144,7 +145,9 @@ libcxx/include/__compare/strong_order.h
libcxx/include/__compare/three_way_comparable.h
libcxx/include/__compare/weak_order.h
libcxx/include/complex
+libcxx/include/__concepts/swappable.h
libcxx/include/condition_variable
+libcxx/include/__config
libcxx/include/__coroutine/coroutine_handle.h
libcxx/include/__coroutine/coroutine_traits.h
libcxx/include/__coroutine/noop_coroutine_handle.h
@@ -155,8 +158,10 @@ libcxx/include/cuchar
libcxx/include/__debug_utils/randomize_range.h
libcxx/include/deque
libcxx/include/errno.h
+libcxx/include/__exception/exception_ptr.h
libcxx/include/expected
libcxx/include/__expected/expected.h
+libcxx/include/__expected/unexpected.h
libcxx/include/experimental/__config
libcxx/include/experimental/iterator
libcxx/include/experimental/map
@@ -331,6 +336,7 @@ libcxx/include/mutex
libcxx/include/new
libcxx/include/__node_handle
libcxx/include/numbers
+libcxx/include/numeric
libcxx/include/__numeric/accumulate.h
libcxx/include/__numeric/adjacent_difference.h
libcxx/include/__numeric/exclusive_scan.h
@@ -346,6 +352,7 @@ libcxx/include/__numeric/transform_inclusive_scan.h
libcxx/include/__numeric/transform_reduce.h
libcxx/include/optional
libcxx/include/ostream
+libcxx/include/print
libcxx/include/queue
libcxx/include/__random/bernoulli_distribution.h
libcxx/include/__random/binomial_distribution.h
@@ -409,6 +416,7 @@ libcxx/include/__ranges/single_view.h
libcxx/include/__ranges/size.h
libcxx/include/__ranges/subrange.h
libcxx/include/__ranges/take_view.h
+libcxx/include/__ranges/to.h
libcxx/include/__ranges/transform_view.h
libcxx/include/__ranges/view_interface.h
libcxx/include/__ranges/views.h
@@ -446,8 +454,12 @@ libcxx/include/__support/newlib/xlocale.h
libcxx/include/__support/win32/locale_win32.h
libcxx/include/__support/xlocale/__nop_locale_mgmt.h
libcxx/include/__system_error/errc.h
+libcxx/include/__system_error/error_category.h
+libcxx/include/__system_error/error_code.h
+libcxx/include/__system_error/error_condition.h
libcxx/include/thread
libcxx/include/__thread/formatter.h
+libcxx/include/__thread/id.h
libcxx/include/__threading_support
libcxx/include/__thread/poll_with_backoff.h
libcxx/include/__thread/this_thread.h
@@ -462,9 +474,12 @@ libcxx/include/__tuple/tuple_indices.h
libcxx/include/__tuple/tuple_like_ext.h
libcxx/include/__tuple/tuple_size.h
libcxx/include/__tuple/tuple_types.h
-libcxx/include/__typeinfo/typeinfo.h
libcxx/include/typeindex
-libcxx/include/typeinfo
+libcxx/include/__typeinfo/typeinfo.h
+libcxx/include/type_traits
+libcxx/include/__type_traits/is_nothrow_copy_constructible.h
+libcxx/include/__type_traits/is_nothrow_move_constructible.h
+libcxx/include/__type_traits/promote.h
libcxx/include/uchar.h
libcxx/include/unordered_map
libcxx/include/unordered_set
@@ -478,6 +493,7 @@ libcxx/include/__utility/pair.h
libcxx/include/__utility/piecewise_construct.h
libcxx/include/__utility/priority_tag.h
libcxx/include/__utility/rel_ops.h
+libcxx/include/__utility/terminate_on_exception.h
libcxx/include/__utility/to_underlying.h
libcxx/include/__utility/unreachable.h
libcxx/include/valarray
@@ -527,6 +543,7 @@ libcxx/src/memory.cpp
libcxx/src/mutex.cpp
libcxx/src/mutex_destructor.cpp
libcxx/src/optional.cpp
+libcxx/src/print.cpp
libcxx/src/pstl/libdispatch.cpp
libcxx/src/random.cpp
libcxx/src/random_shuffle.cpp
>From a3cc304fbe5c9e921f6e28f6606378e2b436c976 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 30 Aug 2023 13:13:14 +0300
Subject: [PATCH 08/47] bits of formatting
---
libcxx/include/module.modulemap.in | 4 ++--
.../runtime/exception_pointer_cxxabi.ipp | 2 +-
libcxx/utils/data/ignore_format.txt | 20 +------------------
3 files changed, 4 insertions(+), 22 deletions(-)
diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
index 9c96b84b6263020..2a72758a2dd1ed7 100644
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -1267,8 +1267,8 @@ module std_private_debug_utils_strict_weak_ordering_check [system] {
export std_private_type_traits_is_constant_evaluated
}
-module std_private_typeinfo_typeinfo [system] {
- header "__typeinfo/typeinfo.h"
+module std_private_typeinfo_typeinfo [system] {
+ header "__typeinfo/typeinfo.h"
export *
}
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index f8ad08c11b736b9..93e08dba3cd9bd5 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -35,7 +35,7 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
return *this;
}
-void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
+void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
void *__ex = __cxa_allocate_exception(size);
(void)__cxa_init_primary_exception(__ex, tinfo, dest);
diff --git a/libcxx/utils/data/ignore_format.txt b/libcxx/utils/data/ignore_format.txt
index 0d62ab5f39b83eb..664e9f51e9ba7fd 100644
--- a/libcxx/utils/data/ignore_format.txt
+++ b/libcxx/utils/data/ignore_format.txt
@@ -122,7 +122,6 @@ libcxx/include/__chrono/literals.h
libcxx/include/__chrono/monthday.h
libcxx/include/__chrono/month.h
libcxx/include/__chrono/month_weekday.h
-libcxx/include/__chrono/statically_widen.h
libcxx/include/__chrono/steady_clock.h
libcxx/include/__chrono/system_clock.h
libcxx/include/__chrono/time_point.h
@@ -145,9 +144,7 @@ libcxx/include/__compare/strong_order.h
libcxx/include/__compare/three_way_comparable.h
libcxx/include/__compare/weak_order.h
libcxx/include/complex
-libcxx/include/__concepts/swappable.h
libcxx/include/condition_variable
-libcxx/include/__config
libcxx/include/__coroutine/coroutine_handle.h
libcxx/include/__coroutine/coroutine_traits.h
libcxx/include/__coroutine/noop_coroutine_handle.h
@@ -158,10 +155,8 @@ libcxx/include/cuchar
libcxx/include/__debug_utils/randomize_range.h
libcxx/include/deque
libcxx/include/errno.h
-libcxx/include/__exception/exception_ptr.h
libcxx/include/expected
libcxx/include/__expected/expected.h
-libcxx/include/__expected/unexpected.h
libcxx/include/experimental/__config
libcxx/include/experimental/iterator
libcxx/include/experimental/map
@@ -336,7 +331,6 @@ libcxx/include/mutex
libcxx/include/new
libcxx/include/__node_handle
libcxx/include/numbers
-libcxx/include/numeric
libcxx/include/__numeric/accumulate.h
libcxx/include/__numeric/adjacent_difference.h
libcxx/include/__numeric/exclusive_scan.h
@@ -352,7 +346,6 @@ libcxx/include/__numeric/transform_inclusive_scan.h
libcxx/include/__numeric/transform_reduce.h
libcxx/include/optional
libcxx/include/ostream
-libcxx/include/print
libcxx/include/queue
libcxx/include/__random/bernoulli_distribution.h
libcxx/include/__random/binomial_distribution.h
@@ -416,7 +409,6 @@ libcxx/include/__ranges/single_view.h
libcxx/include/__ranges/size.h
libcxx/include/__ranges/subrange.h
libcxx/include/__ranges/take_view.h
-libcxx/include/__ranges/to.h
libcxx/include/__ranges/transform_view.h
libcxx/include/__ranges/view_interface.h
libcxx/include/__ranges/views.h
@@ -454,12 +446,8 @@ libcxx/include/__support/newlib/xlocale.h
libcxx/include/__support/win32/locale_win32.h
libcxx/include/__support/xlocale/__nop_locale_mgmt.h
libcxx/include/__system_error/errc.h
-libcxx/include/__system_error/error_category.h
-libcxx/include/__system_error/error_code.h
-libcxx/include/__system_error/error_condition.h
libcxx/include/thread
libcxx/include/__thread/formatter.h
-libcxx/include/__thread/id.h
libcxx/include/__threading_support
libcxx/include/__thread/poll_with_backoff.h
libcxx/include/__thread/this_thread.h
@@ -475,11 +463,7 @@ libcxx/include/__tuple/tuple_like_ext.h
libcxx/include/__tuple/tuple_size.h
libcxx/include/__tuple/tuple_types.h
libcxx/include/typeindex
-libcxx/include/__typeinfo/typeinfo.h
-libcxx/include/type_traits
-libcxx/include/__type_traits/is_nothrow_copy_constructible.h
-libcxx/include/__type_traits/is_nothrow_move_constructible.h
-libcxx/include/__type_traits/promote.h
+libcxx/include/typeinfo
libcxx/include/uchar.h
libcxx/include/unordered_map
libcxx/include/unordered_set
@@ -493,7 +477,6 @@ libcxx/include/__utility/pair.h
libcxx/include/__utility/piecewise_construct.h
libcxx/include/__utility/priority_tag.h
libcxx/include/__utility/rel_ops.h
-libcxx/include/__utility/terminate_on_exception.h
libcxx/include/__utility/to_underlying.h
libcxx/include/__utility/unreachable.h
libcxx/include/valarray
@@ -543,7 +526,6 @@ libcxx/src/memory.cpp
libcxx/src/mutex.cpp
libcxx/src/mutex_destructor.cpp
libcxx/src/optional.cpp
-libcxx/src/print.cpp
libcxx/src/pstl/libdispatch.cpp
libcxx/src/random.cpp
libcxx/src/random_shuffle.cpp
>From 10176726b2c5772136c861cf73c8234112a8e89f Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 30 Aug 2023 14:42:45 +0300
Subject: [PATCH 09/47] wip on making the build green
---
libcxx/utils/data/ignore_format.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libcxx/utils/data/ignore_format.txt b/libcxx/utils/data/ignore_format.txt
index 664e9f51e9ba7fd..b633c606c1201e2 100644
--- a/libcxx/utils/data/ignore_format.txt
+++ b/libcxx/utils/data/ignore_format.txt
@@ -462,8 +462,8 @@ libcxx/include/__tuple/tuple_indices.h
libcxx/include/__tuple/tuple_like_ext.h
libcxx/include/__tuple/tuple_size.h
libcxx/include/__tuple/tuple_types.h
+libcxx/include/__typeinfo/typeinfo.h
libcxx/include/typeindex
-libcxx/include/typeinfo
libcxx/include/uchar.h
libcxx/include/unordered_map
libcxx/include/unordered_set
>From 772c2eeeee9016058bcf6c66baa900eb7755e5b1 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 30 Aug 2023 16:37:23 +0300
Subject: [PATCH 10/47] wip on making the build green
---
libcxx/utils/data/ignore_format.txt | 1 -
1 file changed, 1 deletion(-)
diff --git a/libcxx/utils/data/ignore_format.txt b/libcxx/utils/data/ignore_format.txt
index b633c606c1201e2..be01186536cb506 100644
--- a/libcxx/utils/data/ignore_format.txt
+++ b/libcxx/utils/data/ignore_format.txt
@@ -462,7 +462,6 @@ libcxx/include/__tuple/tuple_indices.h
libcxx/include/__tuple/tuple_like_ext.h
libcxx/include/__tuple/tuple_size.h
libcxx/include/__tuple/tuple_types.h
-libcxx/include/__typeinfo/typeinfo.h
libcxx/include/typeindex
libcxx/include/uchar.h
libcxx/include/unordered_map
>From fb593cb3458464cbf32011f4ecf9d2b728138d21 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Thu, 7 Sep 2023 00:25:28 +0300
Subject: [PATCH 11/47] ABI fixes
---
libcxx/include/__exception/exception_ptr.h | 6 +++---
libcxxabi/lib/exceptions.exp | 1 +
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 0e5310c767cbe92..bcb84d8bc06e59e 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -34,9 +34,9 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
static_cast<_Ep*>(__x)->~_Ep();
}
- static void* __init_native_exception(size_t, std::type_info*, void (*)(void*)) _NOEXCEPT;
- static void __free_native_exception(void*) _NOEXCEPT;
- static exception_ptr __from_native_exception_pointer(void* __e) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI static void* __init_native_exception(size_t, std::type_info*, void (*)(void*)) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI static void __free_native_exception(void*) _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI static exception_ptr __from_native_exception_pointer(void* __e) _NOEXCEPT;
template <class _Ep>
friend _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep) _NOEXCEPT;
diff --git a/libcxxabi/lib/exceptions.exp b/libcxxabi/lib/exceptions.exp
index c3780d2974903ce..9dcfbdbd3598e12 100644
--- a/libcxxabi/lib/exceptions.exp
+++ b/libcxxabi/lib/exceptions.exp
@@ -7,5 +7,6 @@ ___cxa_end_catch
___cxa_free_dependent_exception
___cxa_free_exception
___cxa_get_exception_ptr
+___cxa_init_primary_exception
___cxa_rethrow
___cxa_throw
>From c80ce00083f750b564f37ffbf1a3e993def18701 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Mon, 25 Sep 2023 16:46:25 +0300
Subject: [PATCH 12/47] rebase fix
---
libcxx/include/typeinfo | 348 ----------------------------------------
1 file changed, 348 deletions(-)
diff --git a/libcxx/include/typeinfo b/libcxx/include/typeinfo
index 3a9087f7752fc17..e869cd5e6750787 100644
--- a/libcxx/include/typeinfo
+++ b/libcxx/include/typeinfo
@@ -64,354 +64,6 @@ public:
# pragma GCC system_header
#endif
-<<<<<<< HEAD
-#if defined(_LIBCPP_ABI_VCRUNTIME)
-#include <vcruntime_typeinfo.h>
-#else
-
-namespace std // purposefully not using versioning namespace
-{
-
-
-#if defined(_LIBCPP_ABI_MICROSOFT)
-
-class _LIBCPP_EXPORTED_FROM_ABI type_info
-{
- type_info& operator=(const type_info&);
- type_info(const type_info&);
-
- mutable struct {
- const char *__undecorated_name;
- const char __decorated_name[1];
- } __data;
-
- int __compare(const type_info &__rhs) const _NOEXCEPT;
-
-public:
- _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE
- virtual ~type_info();
-
- const char *name() const _NOEXCEPT;
-
- _LIBCPP_INLINE_VISIBILITY
- bool before(const type_info& __arg) const _NOEXCEPT {
- return __compare(__arg) < 0;
- }
-
- size_t hash_code() const _NOEXCEPT;
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX23
- bool operator==(const type_info& __arg) const _NOEXCEPT {
- // When evaluated in a constant expression, both type infos simply can't come
- // from different translation units, so it is sufficient to compare their addresses.
- if (__libcpp_is_constant_evaluated()) {
- return this == &__arg;
- }
- return __compare(__arg) == 0;
- }
-
-#if _LIBCPP_STD_VER <= 17
- _LIBCPP_INLINE_VISIBILITY
- bool operator!=(const type_info& __arg) const _NOEXCEPT
- { return !operator==(__arg); }
-#endif
-};
-
-#else // !defined(_LIBCPP_ABI_MICROSOFT)
-
-// ========================================================================== //
-// Implementations
-// ========================================================================== //
-// ------------------------------------------------------------------------- //
-// Unique
-// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 1)
-// ------------------------------------------------------------------------- //
-// This implementation of type_info assumes a unique copy of the RTTI for a
-// given type inside a program. This is a valid assumption when abiding to the
-// Itanium ABI (http://itanium-cxx-abi.github.io/cxx-abi/abi.html#vtable-components).
-// Under this assumption, we can always compare the addresses of the type names
-// to implement equality-comparison of type_infos instead of having to perform
-// a deep string comparison.
-// -------------------------------------------------------------------------- //
-// NonUnique
-// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 2)
-// -------------------------------------------------------------------------- //
-// This implementation of type_info does not assume there is always a unique
-// copy of the RTTI for a given type inside a program. For various reasons
-// the linker may have failed to merge every copy of a types RTTI
-// (For example: -Bsymbolic or llvm.org/PR37398). Under this assumption, two
-// type_infos are equal if their addresses are equal or if a deep string
-// comparison is equal.
-// -------------------------------------------------------------------------- //
-// NonUniqueARMRTTIBit
-// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 3)
-// -------------------------------------------------------------------------- //
-// This implementation is specific to ARM64 on Apple platforms.
-//
-// This implementation of type_info does not assume always a unique copy of
-// the RTTI for a given type inside a program. When constructing the type_info,
-// the compiler packs the pointer to the type name into a uintptr_t and reserves
-// the high bit of that pointer, which is assumed to be free for use under that
-// ABI. If that high bit is set, that specific copy of the RTTI can't be assumed
-// to be unique within the program. If the high bit is unset, then the RTTI can
-// be assumed to be unique within the program.
-//
-// When comparing type_infos, if both RTTIs can be assumed to be unique, it
-// suffices to compare their addresses. If both the RTTIs can't be assumed to
-// be unique, we must perform a deep string comparison of the type names.
-// However, if one of the RTTIs is guaranteed unique and the other one isn't,
-// then both RTTIs are necessarily not to be considered equal.
-//
-// The intent of this design is to remove the need for weak symbols. Specifically,
-// if a type would normally have a default-visibility RTTI emitted as a weak
-// symbol, it is given hidden visibility instead and the non-unique bit is set.
-// Otherwise, types declared with hidden visibility are always considered to have
-// a unique RTTI: the RTTI is emitted with linkonce_odr linkage and is assumed
-// to be deduplicated by the linker within the linked image. Across linked image
-// boundaries, such types are thus considered different types.
-
-// This value can be overriden in the __config_site. When it's not overriden,
-// we pick a default implementation based on the platform here.
-#ifndef _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION
-
- // Windows and AIX binaries can't merge typeinfos, so use the NonUnique implementation.
-# if defined(_LIBCPP_OBJECT_FORMAT_COFF) || defined(_LIBCPP_OBJECT_FORMAT_XCOFF)
-# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 2
-
- // On arm64 on Apple platforms, use the special NonUniqueARMRTTIBit implementation.
-# elif defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__)
-# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 3
-
- // On all other platforms, assume the Itanium C++ ABI and use the Unique implementation.
-# else
-# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 1
-# endif
-#endif
-
-struct __type_info_implementations {
- struct __string_impl_base {
- typedef const char* __type_name_t;
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- _LIBCPP_CONSTEXPR static const char* __type_name_to_string(__type_name_t __v) _NOEXCEPT {
- return __v;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- _LIBCPP_CONSTEXPR static __type_name_t __string_to_type_name(const char* __v) _NOEXCEPT {
- return __v;
- }
- };
-
- struct __unique_impl : __string_impl_base {
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static size_t __hash(__type_name_t __v) _NOEXCEPT {
- return reinterpret_cast<size_t>(__v);
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static bool __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- return __lhs == __rhs;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static bool __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- return __lhs < __rhs;
- }
- };
-
- struct __non_unique_impl : __string_impl_base {
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static size_t __hash(__type_name_t __ptr) _NOEXCEPT {
- size_t __hash = 5381;
- while (unsigned char __c = static_cast<unsigned char>(*__ptr++))
- __hash = (__hash * 33) ^ __c;
- return __hash;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static bool __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- return __lhs == __rhs || __builtin_strcmp(__lhs, __rhs) == 0;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static bool __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- return __builtin_strcmp(__lhs, __rhs) < 0;
- }
- };
-
- struct __non_unique_arm_rtti_bit_impl {
- typedef uintptr_t __type_name_t;
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static const char* __type_name_to_string(__type_name_t __v) _NOEXCEPT {
- return reinterpret_cast<const char*>(__v &
- ~__non_unique_rtti_bit::value);
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static __type_name_t __string_to_type_name(const char* __v) _NOEXCEPT {
- return reinterpret_cast<__type_name_t>(__v);
- }
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static size_t __hash(__type_name_t __v) _NOEXCEPT {
- if (__is_type_name_unique(__v))
- return __v;
- return __non_unique_impl::__hash(__type_name_to_string(__v));
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static bool __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- if (__lhs == __rhs)
- return true;
- if (__is_type_name_unique(__lhs) || __is_type_name_unique(__rhs))
- // Either both are unique and have a different address, or one of them
- // is unique and the other one isn't. In both cases they are unequal.
- return false;
- return __builtin_strcmp(__type_name_to_string(__lhs), __type_name_to_string(__rhs)) == 0;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
- static bool __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- if (__is_type_name_unique(__lhs) || __is_type_name_unique(__rhs))
- return __lhs < __rhs;
- return __builtin_strcmp(__type_name_to_string(__lhs), __type_name_to_string(__rhs)) < 0;
- }
-
- private:
- // The unique bit is the top bit. It is expected that __type_name_t is 64 bits when
- // this implementation is actually used.
- typedef integral_constant<__type_name_t,
- (1ULL << ((__CHAR_BIT__ * sizeof(__type_name_t)) - 1))> __non_unique_rtti_bit;
-
- _LIBCPP_INLINE_VISIBILITY
- static bool __is_type_name_unique(__type_name_t __lhs) _NOEXCEPT {
- return !(__lhs & __non_unique_rtti_bit::value);
- }
- };
-
- typedef
-#if _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 1
- __unique_impl
-#elif _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 2
- __non_unique_impl
-#elif _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 3
- __non_unique_arm_rtti_bit_impl
-#else
-# error invalid configuration for _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION
-#endif
- __impl;
-};
-
-class _LIBCPP_EXPORTED_FROM_ABI type_info
-{
- type_info& operator=(const type_info&);
- type_info(const type_info&);
-
- protected:
- typedef __type_info_implementations::__impl __impl;
-
- __impl::__type_name_t __type_name;
-
- _LIBCPP_INLINE_VISIBILITY
- explicit type_info(const char* __n)
- : __type_name(__impl::__string_to_type_name(__n)) {}
-
-public:
- _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE
- virtual ~type_info();
-
- _LIBCPP_INLINE_VISIBILITY
- const char* name() const _NOEXCEPT
- {
- return __impl::__type_name_to_string(__type_name);
- }
-
- _LIBCPP_INLINE_VISIBILITY
- bool before(const type_info& __arg) const _NOEXCEPT
- {
- return __impl::__lt(__type_name, __arg.__type_name);
- }
-
- _LIBCPP_INLINE_VISIBILITY
- size_t hash_code() const _NOEXCEPT
- {
- return __impl::__hash(__type_name);
- }
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX23
- bool operator==(const type_info& __arg) const _NOEXCEPT
- {
- // When evaluated in a constant expression, both type infos simply can't come
- // from different translation units, so it is sufficient to compare their addresses.
- if (__libcpp_is_constant_evaluated()) {
- return this == &__arg;
- }
- return __impl::__eq(__type_name, __arg.__type_name);
- }
-
-#if _LIBCPP_STD_VER <= 17
- _LIBCPP_INLINE_VISIBILITY
- bool operator!=(const type_info& __arg) const _NOEXCEPT
- { return !operator==(__arg); }
-#endif
-};
-#endif // defined(_LIBCPP_ABI_MICROSOFT)
-
-class _LIBCPP_EXPORTED_FROM_ABI bad_cast
- : public exception
-{
- public:
- bad_cast() _NOEXCEPT;
- _LIBCPP_HIDE_FROM_ABI bad_cast(const bad_cast&) _NOEXCEPT = default;
- _LIBCPP_HIDE_FROM_ABI bad_cast& operator=(const bad_cast&) _NOEXCEPT = default;
- ~bad_cast() _NOEXCEPT override;
- const char* what() const _NOEXCEPT override;
-};
-
-class _LIBCPP_EXPORTED_FROM_ABI bad_typeid
- : public exception
-{
- public:
- bad_typeid() _NOEXCEPT;
- _LIBCPP_HIDE_FROM_ABI bad_typeid(const bad_typeid&) _NOEXCEPT = default;
- _LIBCPP_HIDE_FROM_ABI bad_typeid& operator=(const bad_typeid&) _NOEXCEPT = default;
- ~bad_typeid() _NOEXCEPT override;
- const char* what() const _NOEXCEPT override;
-};
-
-} // namespace std
-
-#endif // defined(_LIBCPP_ABI_VCRUNTIME)
-
-#if defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
-
-namespace std {
-
-class bad_cast : public exception {
-public:
- bad_cast() _NOEXCEPT : exception("bad cast") {}
-
-private:
- bad_cast(const char* const __message) _NOEXCEPT : exception(__message) {}
-};
-
-class bad_typeid : public exception {
-public:
- bad_typeid() _NOEXCEPT : exception("bad typeid") {}
-
-private:
- bad_typeid(const char* const __message) _NOEXCEPT : exception(__message) {}
-};
-
-} // namespace std
-
-#endif // defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
-void __throw_bad_cast()
-{
-#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
- throw bad_cast();
-#else
- _LIBCPP_VERBOSE_ABORT("bad_cast was thrown in -fno-exceptions mode");
-#endif
-}
-_LIBCPP_END_NAMESPACE_STD
-
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <cstdlib>
# include <exception>
>From 1c26214f82d30e8d889ca9abfddcfeb00e43fe22 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 27 Sep 2023 17:25:23 +0300
Subject: [PATCH 13/47] rebase fix
---
libcxx/include/__typeinfo/typeinfo.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libcxx/include/__typeinfo/typeinfo.h b/libcxx/include/__typeinfo/typeinfo.h
index ac3550be0842e54..394cac5967870aa 100644
--- a/libcxx/include/__typeinfo/typeinfo.h
+++ b/libcxx/include/__typeinfo/typeinfo.h
@@ -281,6 +281,7 @@ class _LIBCPP_EXPORTED_FROM_ABI bad_cast : public exception {
public:
bad_cast() _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI bad_cast(const bad_cast&) _NOEXCEPT = default;
+ _LIBCPP_HIDE_FROM_ABI bad_cast& operator=(const bad_cast&) _NOEXCEPT = default;
~bad_cast() _NOEXCEPT override;
const char* what() const _NOEXCEPT override;
};
@@ -288,6 +289,8 @@ class _LIBCPP_EXPORTED_FROM_ABI bad_cast : public exception {
class _LIBCPP_EXPORTED_FROM_ABI bad_typeid : public exception {
public:
bad_typeid() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI bad_typeid(const bad_typeid&) _NOEXCEPT = default;
+ _LIBCPP_HIDE_FROM_ABI bad_typeid& operator=(const bad_typeid&) _NOEXCEPT = default;
~bad_typeid() _NOEXCEPT override;
const char* what() const _NOEXCEPT override;
};
>From d45e91eb5b687750df899a1b7f888a9cf371776a Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 27 Sep 2023 18:05:49 +0300
Subject: [PATCH 14/47] + clang-format
---
libcxx/include/__typeinfo/typeinfo.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libcxx/include/__typeinfo/typeinfo.h b/libcxx/include/__typeinfo/typeinfo.h
index 394cac5967870aa..07b53af2b478588 100644
--- a/libcxx/include/__typeinfo/typeinfo.h
+++ b/libcxx/include/__typeinfo/typeinfo.h
@@ -280,7 +280,7 @@ class _LIBCPP_EXPORTED_FROM_ABI type_info {
class _LIBCPP_EXPORTED_FROM_ABI bad_cast : public exception {
public:
bad_cast() _NOEXCEPT;
- _LIBCPP_HIDE_FROM_ABI bad_cast(const bad_cast&) _NOEXCEPT = default;
+ _LIBCPP_HIDE_FROM_ABI bad_cast(const bad_cast&) _NOEXCEPT = default;
_LIBCPP_HIDE_FROM_ABI bad_cast& operator=(const bad_cast&) _NOEXCEPT = default;
~bad_cast() _NOEXCEPT override;
const char* what() const _NOEXCEPT override;
@@ -289,7 +289,7 @@ class _LIBCPP_EXPORTED_FROM_ABI bad_cast : public exception {
class _LIBCPP_EXPORTED_FROM_ABI bad_typeid : public exception {
public:
bad_typeid() _NOEXCEPT;
- _LIBCPP_HIDE_FROM_ABI bad_typeid(const bad_typeid&) _NOEXCEPT = default;
+ _LIBCPP_HIDE_FROM_ABI bad_typeid(const bad_typeid&) _NOEXCEPT = default;
_LIBCPP_HIDE_FROM_ABI bad_typeid& operator=(const bad_typeid&) _NOEXCEPT = default;
~bad_typeid() _NOEXCEPT override;
const char* what() const _NOEXCEPT override;
>From f7f2ae3c3d612e89698cab9d12d10d778ed3be32 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Wed, 27 Sep 2023 23:55:46 +0300
Subject: [PATCH 15/47] + generate-cxx-abilist
---
...nknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist | 1 +
1 file changed, 1 insertion(+)
diff --git a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
index 49e3579614ee8c1..478a615eb61cbce 100644
--- a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -54,6 +54,7 @@
{'is_defined': False, 'name': '__cxa_guard_acquire', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_guard_release', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_increment_exception_refcount', 'type': 'FUNC'}
+{'is_defined': False, 'name': '__cxa_init_primary_exception', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_pure_virtual', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_rethrow', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_rethrow_primary_exception', 'type': 'FUNC'}
>From eab3aa447a366d5c6769edc9d119042e9a6aa56d Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Mon, 2 Oct 2023 16:29:26 +0300
Subject: [PATCH 16/47] fix compilcation under gcc
---
libcxx/include/__exception/exception_ptr.h | 6 +++---
...n-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist | 3 +++
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index bcb84d8bc06e59e..0e5310c767cbe92 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -34,9 +34,9 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
static_cast<_Ep*>(__x)->~_Ep();
}
- _LIBCPP_HIDE_FROM_ABI static void* __init_native_exception(size_t, std::type_info*, void (*)(void*)) _NOEXCEPT;
- _LIBCPP_HIDE_FROM_ABI static void __free_native_exception(void*) _NOEXCEPT;
- _LIBCPP_HIDE_FROM_ABI static exception_ptr __from_native_exception_pointer(void* __e) _NOEXCEPT;
+ static void* __init_native_exception(size_t, std::type_info*, void (*)(void*)) _NOEXCEPT;
+ static void __free_native_exception(void*) _NOEXCEPT;
+ static exception_ptr __from_native_exception_pointer(void* __e) _NOEXCEPT;
template <class _Ep>
friend _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep) _NOEXCEPT;
diff --git a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
index 478a615eb61cbce..71c492deced3c6a 100644
--- a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -522,6 +522,9 @@
{'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD0Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD1Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt13exception_ptr23__free_native_exceptionEPv', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt13exception_ptr23__init_native_exceptionEmPSt9type_infoPFvPvE', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt13exception_ptr31__from_native_exception_pointerEPv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt13exception_ptrC1ERKS_', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt13exception_ptrC2ERKS_', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt13exception_ptrD1Ev', 'type': 'FUNC'}
>From 2035f1135156fc02aed5ebc1cedf8a4a8a913323 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Fri, 6 Oct 2023 18:02:39 +0300
Subject: [PATCH 17/47] some more ifdefs
---
libcxx/include/__exception/exception_ptr.h | 4 +++-
libcxx/src/support/runtime/exception_pointer_cxxabi.ipp | 2 ++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 0e5310c767cbe92..ecc82d0ba905f54 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -28,7 +28,8 @@ namespace std { // purposefully not using versioning namespace
class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
void* __ptr_;
-# if defined(LIBCXX_BUILDING_LIBCXXABI)
+# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
+# if defined(LIBCXX_BUILDING_LIBCXXABI)
template <class _Ep>
static inline void __dest_thunk(void* __x) {
static_cast<_Ep*>(__x)->~_Ep();
@@ -41,6 +42,7 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
template <class _Ep>
friend _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep) _NOEXCEPT;
# endif
+# endif
public:
_LIBCPP_HIDE_FROM_ABI exception_ptr() _NOEXCEPT : __ptr_() {}
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index 93e08dba3cd9bd5..d51031977e2dcb5 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -35,6 +35,7 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
return *this;
}
+# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
void *__ex = __cxa_allocate_exception(size);
@@ -54,6 +55,7 @@ exception_ptr exception_ptr::__from_native_exception_pointer(void *__e) noexcept
return ptr;
}
+# endif
nested_exception::nested_exception() noexcept
: __ptr_(current_exception())
>From 81c5626f035183d48df898d58d5162fcd5ec57c9 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Mon, 9 Oct 2023 02:44:07 +0300
Subject: [PATCH 18/47] + clang-format
---
libcxx/include/__exception/exception_ptr.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index ecc82d0ba905f54..e435da65cc5d2b6 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -41,7 +41,7 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
template <class _Ep>
friend _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep) _NOEXCEPT;
-# endif
+# endif
# endif
public:
>From 6e8e55daaa90742dd2249ccef767f3236bc26521 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Mon, 9 Oct 2023 03:20:25 +0300
Subject: [PATCH 19/47] + clang-format
---
libcxx/include/__typeinfo/typeinfo.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libcxx/include/__typeinfo/typeinfo.h b/libcxx/include/__typeinfo/typeinfo.h
index 07b53af2b478588..2af157a5bf76f64 100644
--- a/libcxx/include/__typeinfo/typeinfo.h
+++ b/libcxx/include/__typeinfo/typeinfo.h
@@ -297,7 +297,7 @@ class _LIBCPP_EXPORTED_FROM_ABI bad_typeid : public exception {
} // namespace std
-#endif // defined(_LIBCPP_ABI_VCRUNTIME)
+#endif // defined(_LIBCPP_ABI_VCRUNTIME)
#if defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
>From d633048ef7fbd55ab7ac5ba3d1d0cf929167325b Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Mon, 9 Oct 2023 03:37:52 +0300
Subject: [PATCH 20/47] + clang-format, 17.0.2
---
libcxx/include/__typeinfo/typeinfo.h | 2 +-
libcxxabi/src/cxa_exception.cpp | 30 ++++++++++++++--------------
2 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/libcxx/include/__typeinfo/typeinfo.h b/libcxx/include/__typeinfo/typeinfo.h
index 2af157a5bf76f64..07b53af2b478588 100644
--- a/libcxx/include/__typeinfo/typeinfo.h
+++ b/libcxx/include/__typeinfo/typeinfo.h
@@ -297,7 +297,7 @@ class _LIBCPP_EXPORTED_FROM_ABI bad_typeid : public exception {
} // namespace std
-#endif // defined(_LIBCPP_ABI_VCRUNTIME)
+#endif // defined(_LIBCPP_ABI_VCRUNTIME)
#if defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
diff --git a/libcxxabi/src/cxa_exception.cpp b/libcxxabi/src/cxa_exception.cpp
index 1e72d7f34f26a21..65e9f4504ddade0 100644
--- a/libcxxabi/src/cxa_exception.cpp
+++ b/libcxxabi/src/cxa_exception.cpp
@@ -208,16 +208,16 @@ void __cxa_free_exception(void *thrown_object) throw() {
__cxa_exception* __cxa_init_primary_exception(void* object, std::type_info* tinfo,
void(_LIBCXXABI_DTOR_FUNC* dest)(void*)) throw() {
- __cxa_exception* exception_header = cxa_exception_from_thrown_object(object);
- exception_header->referenceCount = 0;
- exception_header->unexpectedHandler = std::get_unexpected();
- exception_header->terminateHandler = std::get_terminate();
- exception_header->exceptionType = tinfo;
- exception_header->exceptionDestructor = dest;
- setOurExceptionClass(&exception_header->unwindHeader);
- exception_header->unwindHeader.exception_cleanup = exception_cleanup_func;
+ __cxa_exception* exception_header = cxa_exception_from_thrown_object(object);
+ exception_header->referenceCount = 0;
+ exception_header->unexpectedHandler = std::get_unexpected();
+ exception_header->terminateHandler = std::get_terminate();
+ exception_header->exceptionType = tinfo;
+ exception_header->exceptionDestructor = dest;
+ setOurExceptionClass(&exception_header->unwindHeader);
+ exception_header->unwindHeader.exception_cleanup = exception_cleanup_func;
- return exception_header;
+ return exception_header;
}
// This function shall allocate a __cxa_dependent_exception and
@@ -273,15 +273,15 @@ __cxa_throw(void *thrown_object, std::type_info *tinfo, void *(_LIBCXXABI_DTOR_F
#else
__cxa_throw(void *thrown_object, std::type_info *tinfo, void (_LIBCXXABI_DTOR_FUNC *dest)(void *)) {
#endif
- __cxa_eh_globals* globals = __cxa_get_globals();
- globals->uncaughtExceptions += 1; // Not atomically, since globals are thread-local
+ __cxa_eh_globals* globals = __cxa_get_globals();
+ globals->uncaughtExceptions += 1; // Not atomically, since globals are thread-local
- __cxa_exception* exception_header = __cxa_init_primary_exception(thrown_object, tinfo, dest);
- exception_header->referenceCount = 1; // This is a newly allocated exception, no need for thread safety.
+ __cxa_exception* exception_header = __cxa_init_primary_exception(thrown_object, tinfo, dest);
+ exception_header->referenceCount = 1; // This is a newly allocated exception, no need for thread safety.
#if __has_feature(address_sanitizer)
- // Inform the ASan runtime that now might be a good time to clean stuff up.
- __asan_handle_no_return();
+ // Inform the ASan runtime that now might be a good time to clean stuff up.
+ __asan_handle_no_return();
#endif
#ifdef __USING_SJLJ_EXCEPTIONS__
>From 24ac98453b236a1ac929aa4d8cb1c97c65e958a4 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Thu, 12 Oct 2023 05:18:00 +0300
Subject: [PATCH 21/47] code review fixes
---
libcxx/include/__exception/exception_ptr.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index e435da65cc5d2b6..5c14eab00b00980 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -12,10 +12,10 @@
#include <__config>
#include <__exception/operations.h>
#include <__memory/addressof.h>
+#include <__type_traits/decay.h>
#include <__typeinfo/typeinfo.h>
#include <cstddef>
#include <cstdlib>
-#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
@@ -70,7 +70,7 @@ template <class _Ep>
_LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
# if defined(LIBCXX_BUILDING_LIBCXXABI)
- using _Ep2 = typename decay<_Ep>::type;
+ using _Ep2 = __decay_t<_Ep>;
void* __ex = exception_ptr::__init_native_exception(
sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
try {
>From b6adc58c4b217394ce4c2c012e1246424c93158f Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Thu, 12 Oct 2023 10:29:02 +0300
Subject: [PATCH 22/47] fix transitive_includes tests
---
libcxx/test/libcxx/transitive_includes/cxx23.csv | 2 --
libcxx/test/libcxx/transitive_includes/cxx26.csv | 2 --
2 files changed, 4 deletions(-)
diff --git a/libcxx/test/libcxx/transitive_includes/cxx23.csv b/libcxx/test/libcxx/transitive_includes/cxx23.csv
index 408559119c3a02e..64c292b69ce9f43 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx23.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx23.csv
@@ -159,7 +159,6 @@ deque version
exception cstddef
exception cstdint
exception cstdlib
-exception type_traits
exception version
execution cstddef
execution version
@@ -291,7 +290,6 @@ future ratio
future stdexcept
future string
future thread
-future type_traits
future typeinfo
future version
initializer_list cstddef
diff --git a/libcxx/test/libcxx/transitive_includes/cxx26.csv b/libcxx/test/libcxx/transitive_includes/cxx26.csv
index 408559119c3a02e..64c292b69ce9f43 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx26.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx26.csv
@@ -159,7 +159,6 @@ deque version
exception cstddef
exception cstdint
exception cstdlib
-exception type_traits
exception version
execution cstddef
execution version
@@ -291,7 +290,6 @@ future ratio
future stdexcept
future string
future thread
-future type_traits
future typeinfo
future version
initializer_list cstddef
>From 9c0ce0fc9af97f471cf4a721b031471cc27dba98 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 14 Oct 2023 16:08:33 +0300
Subject: [PATCH 23/47] runtime lookup of __cxa_init_primary_exception
---
libcxx/include/__exception/exception_ptr.h | 8 ++++++++
.../src/support/runtime/exception_pointer_cxxabi.ipp | 12 +++++++++++-
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 5c14eab00b00980..17894eeeed5818a 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -73,6 +73,14 @@ _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
using _Ep2 = __decay_t<_Ep>;
void* __ex = exception_ptr::__init_native_exception(
sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
+ if (__ex == nullptr) {
+ try {
+ throw __e;
+ } catch (...) {
+ return current_exception();
+ }
+ }
+
try {
::new (__ex) _Ep2(__e);
return exception_ptr::__from_native_exception_pointer(__ex);
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index d51031977e2dcb5..73aa30e6ca893ae 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -11,6 +11,8 @@
#error this header may only be used with libc++abi or libcxxrt
#endif
+#include <dlfcn.h>
+
namespace std {
exception_ptr::~exception_ptr() noexcept
@@ -38,8 +40,16 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
+ using CxaInitPrimaryExceptionPrototype = void *(*)(void *, type_info *, void(*)(void *));
+ static CxaInitPrimaryExceptionPrototype cxa_init_primary_exception_fn = reinterpret_cast<CxaInitPrimaryExceptionPrototype>(
+ dlsym(RTLD_DEFAULT, "__cxa_init_primary_exception"));
+
+ if (cxa_init_primary_exception_fn == nullptr) {
+ return nullptr;
+ }
+
void *__ex = __cxa_allocate_exception(size);
- (void)__cxa_init_primary_exception(__ex, tinfo, dest);
+ (void)cxa_init_primary_exception_fn(__ex, tinfo, dest);
return __ex;
}
>From d0fa02cf2e0119dec9652fc336dbc829cc009e2e Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 14 Oct 2023 18:23:46 +0300
Subject: [PATCH 24/47] regenerate cxx-abilist
---
...nknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist | 1 -
1 file changed, 1 deletion(-)
diff --git a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
index 71c492deced3c6a..a391ac9be3c5130 100644
--- a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -54,7 +54,6 @@
{'is_defined': False, 'name': '__cxa_guard_acquire', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_guard_release', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_increment_exception_refcount', 'type': 'FUNC'}
-{'is_defined': False, 'name': '__cxa_init_primary_exception', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_pure_virtual', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_rethrow', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_rethrow_primary_exception', 'type': 'FUNC'}
>From 5f34001afc189b71e39ddf8f319c701a15aa3ab5 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 14 Oct 2023 22:03:35 +0300
Subject: [PATCH 25/47] add exception_ptr.bench
---
libcxx/benchmarks/CMakeLists.txt | 1 +
libcxx/benchmarks/exception_ptr.bench.cpp | 20 ++++++++++++++++++++
2 files changed, 21 insertions(+)
create mode 100644 libcxx/benchmarks/exception_ptr.bench.cpp
diff --git a/libcxx/benchmarks/CMakeLists.txt b/libcxx/benchmarks/CMakeLists.txt
index 7591f34d938bf86..800545a5271d48c 100644
--- a/libcxx/benchmarks/CMakeLists.txt
+++ b/libcxx/benchmarks/CMakeLists.txt
@@ -200,6 +200,7 @@ set(BENCHMARK_TESTS
allocation.bench.cpp
deque.bench.cpp
deque_iterator.bench.cpp
+ exception_ptr.bench.cpp
filesystem.bench.cpp
format_to_n.bench.cpp
format_to.bench.cpp
diff --git a/libcxx/benchmarks/exception_ptr.bench.cpp b/libcxx/benchmarks/exception_ptr.bench.cpp
new file mode 100644
index 000000000000000..c28d11ba0ed3924
--- /dev/null
+++ b/libcxx/benchmarks/exception_ptr.bench.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <benchmark/benchmark.h>
+#include <exception>
+#include <stdexcept>
+
+void bm_make_exception_ptr(benchmark::State& state) {
+ for (auto _ : state) {
+ benchmark::DoNotOptimize(std::make_exception_ptr(std::runtime_error{"Some error"}));
+ }
+}
+BENCHMARK(bm_make_exception_ptr);
+
+BENCHMARK_MAIN();
>From 4445b7e0cffbedc40bdb96a4b7d91137beac18cb Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 14 Oct 2023 22:40:47 +0300
Subject: [PATCH 26/47] add threaded benchmark
---
libcxx/benchmarks/exception_ptr.bench.cpp | 1 +
1 file changed, 1 insertion(+)
diff --git a/libcxx/benchmarks/exception_ptr.bench.cpp b/libcxx/benchmarks/exception_ptr.bench.cpp
index c28d11ba0ed3924..4933d4b22babeb1 100644
--- a/libcxx/benchmarks/exception_ptr.bench.cpp
+++ b/libcxx/benchmarks/exception_ptr.bench.cpp
@@ -16,5 +16,6 @@ void bm_make_exception_ptr(benchmark::State& state) {
}
}
BENCHMARK(bm_make_exception_ptr);
+BENCHMARK(bm_make_exception_ptr)->Threads(8)->UseRealTime();
BENCHMARK_MAIN();
>From c49cb3899d6871bfd738ad4ce0a2dd74a794533d Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 14 Oct 2023 23:21:35 +0300
Subject: [PATCH 27/47] better measurements in benchmark
---
libcxx/benchmarks/exception_ptr.bench.cpp | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/libcxx/benchmarks/exception_ptr.bench.cpp b/libcxx/benchmarks/exception_ptr.bench.cpp
index 4933d4b22babeb1..95a59e5bd647e0a 100644
--- a/libcxx/benchmarks/exception_ptr.bench.cpp
+++ b/libcxx/benchmarks/exception_ptr.bench.cpp
@@ -15,7 +15,6 @@ void bm_make_exception_ptr(benchmark::State& state) {
benchmark::DoNotOptimize(std::make_exception_ptr(std::runtime_error{"Some error"}));
}
}
-BENCHMARK(bm_make_exception_ptr);
-BENCHMARK(bm_make_exception_ptr)->Threads(8)->UseRealTime();
+BENCHMARK(bm_make_exception_ptr)->ThreadRange(1, 8);
BENCHMARK_MAIN();
>From 139ec39c8ed905152042c8f8029b20cf68edb1ad Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sun, 15 Oct 2023 00:38:26 +0300
Subject: [PATCH 28/47] add cxx-abilist for other architectures, some ifdefs
for windows
---
...c64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist | 3 +++
...pple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist | 5 +++++
...own-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist | 3 +++
libcxx/src/support/runtime/exception_pointer_cxxabi.ipp | 6 ++++++
4 files changed, 17 insertions(+)
diff --git a/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
index 8a98d42a2a1aa02..09a1d45ef897010 100644
--- a/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -249,6 +249,9 @@
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptr23__free_native_exceptionEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptr23__init_native_exceptionEmPSt9type_infoPFvPvE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptr31__from_native_exception_pointerEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrC1ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrC2ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
index 0c06b5097b83f80..204b3cbfc978288 100644
--- a/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -300,6 +300,7 @@
{'is_defined': False, 'name': '___cxa_guard_acquire', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_guard_release', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_increment_exception_refcount', 'type': 'U'}
+{'is_defined': False, 'name': '___cxa_init_primary_exception', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_pure_virtual', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_rethrow', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_rethrow_primary_exception', 'type': 'U'}
@@ -811,6 +812,9 @@
{'is_defined': True, 'name': '__ZNSt13bad_exceptionD0Ev', 'type': 'I'}
{'is_defined': True, 'name': '__ZNSt13bad_exceptionD1Ev', 'type': 'I'}
{'is_defined': True, 'name': '__ZNSt13bad_exceptionD2Ev', 'type': 'I'}
+{'is_defined': True, 'name': '__ZNSt13exception_ptr23__free_native_exceptionEPv', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt13exception_ptr23__init_native_exceptionEmPSt9type_infoPFvPvE', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt13exception_ptr31__from_native_exception_pointerEPv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt13exception_ptrC1ERKS_', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt13exception_ptrC2ERKS_', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt13exception_ptrD1Ev', 'type': 'FUNC'}
@@ -2542,6 +2546,7 @@
{'is_defined': True, 'name': '___cxa_guard_abort', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_guard_acquire', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_guard_release', 'type': 'I'}
+{'is_defined': True, 'name': '___cxa_init_primary_exception', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_pure_virtual', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_rethrow', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_throw', 'type': 'I'}
diff --git a/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
index 16658fdff54932b..7387f6102b2d695 100644
--- a/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -523,6 +523,9 @@
{'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD0Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD1Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt13exception_ptr23__free_native_exceptionEPv', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt13exception_ptr23__init_native_exceptionEmPSt9type_infoPFvPvE', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt13exception_ptr31__from_native_exception_pointerEPv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt13exception_ptrC1ERKS_', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt13exception_ptrC2ERKS_', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt13exception_ptrD1Ev', 'type': 'FUNC'}
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index 73aa30e6ca893ae..dbac19d84516c4f 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -11,7 +11,9 @@
#error this header may only be used with libc++abi or libcxxrt
#endif
+#if !defined(_WIN32)
#include <dlfcn.h>
+#endif
namespace std {
@@ -40,6 +42,7 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
+ #if !defined(_WIN32)
using CxaInitPrimaryExceptionPrototype = void *(*)(void *, type_info *, void(*)(void *));
static CxaInitPrimaryExceptionPrototype cxa_init_primary_exception_fn = reinterpret_cast<CxaInitPrimaryExceptionPrototype>(
dlsym(RTLD_DEFAULT, "__cxa_init_primary_exception"));
@@ -51,6 +54,9 @@ void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void
void *__ex = __cxa_allocate_exception(size);
(void)cxa_init_primary_exception_fn(__ex, tinfo, dest);
return __ex;
+ #else
+ return nullptr;
+ #endif
}
void exception_ptr::__free_native_exception(void *thrown_object) noexcept
>From 652bd3041697390a98f3e9229f816c41943e1955 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sun, 15 Oct 2023 01:09:59 +0300
Subject: [PATCH 29/47] support libcxxrt as well
---
libcxx/include/__exception/exception_ptr.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 17894eeeed5818a..52affe6c5d360d8 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -29,7 +29,7 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
void* __ptr_;
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
-# if defined(LIBCXX_BUILDING_LIBCXXABI)
+# if defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI)
template <class _Ep>
static inline void __dest_thunk(void* __x) {
static_cast<_Ep*>(__x)->~_Ep();
@@ -69,7 +69,7 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
template <class _Ep>
_LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
-# if defined(LIBCXX_BUILDING_LIBCXXABI)
+# if defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI)
using _Ep2 = __decay_t<_Ep>;
void* __ex = exception_ptr::__init_native_exception(
sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
>From 40a7f57cc3bebd65cabc0c519e62e4c234f40e88 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sun, 15 Oct 2023 05:00:59 +0300
Subject: [PATCH 30/47] add remaining cxx-abilists
---
...apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist | 5 +++++
...erpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist | 3 +++
2 files changed, 8 insertions(+)
diff --git a/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
index 8daad89f52e6f7c..86c75369306fbac 100644
--- a/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -300,6 +300,7 @@
{'is_defined': False, 'name': '___cxa_guard_acquire', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_guard_release', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_increment_exception_refcount', 'type': 'U'}
+{'is_defined': False, 'name': '___cxa_init_primary_exception', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_pure_virtual', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_rethrow', 'type': 'U'}
{'is_defined': False, 'name': '___cxa_rethrow_primary_exception', 'type': 'U'}
@@ -811,6 +812,9 @@
{'is_defined': True, 'name': '__ZNSt13bad_exceptionD0Ev', 'type': 'I'}
{'is_defined': True, 'name': '__ZNSt13bad_exceptionD1Ev', 'type': 'I'}
{'is_defined': True, 'name': '__ZNSt13bad_exceptionD2Ev', 'type': 'I'}
+{'is_defined': True, 'name': '__ZNSt13exception_ptr23__free_native_exceptionEPv', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt13exception_ptr23__init_native_exceptionEmPSt9type_infoPFvPvE', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt13exception_ptr31__from_native_exception_pointerEPv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt13exception_ptrC1ERKS_', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt13exception_ptrC2ERKS_', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt13exception_ptrD1Ev', 'type': 'FUNC'}
@@ -2508,6 +2512,7 @@
{'is_defined': True, 'name': '___cxa_guard_abort', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_guard_acquire', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_guard_release', 'type': 'I'}
+{'is_defined': True, 'name': '___cxa_init_primary_exception', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_pure_virtual', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_rethrow', 'type': 'I'}
{'is_defined': True, 'name': '___cxa_throw', 'type': 'I'}
diff --git a/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
index 91976f500539daa..a7145024d95e221 100644
--- a/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -249,6 +249,9 @@
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptr23__free_native_exceptionEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptr23__init_native_exceptionEmPSt9type_infoPFvPvE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptr31__from_native_exception_pointerEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrC1ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrC2ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
>From afc0df2d49441a60bd975109f0a62cc936b11b50 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sun, 15 Oct 2023 18:28:32 +0300
Subject: [PATCH 31/47] fix the build for older versions of libcxxrt, add some
comments
---
libcxx/include/__exception/exception_ptr.h | 2 ++
.../support/runtime/exception_pointer_cxxabi.ipp | 13 +++++++++++++
2 files changed, 15 insertions(+)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 52affe6c5d360d8..8008fc84c727045 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -73,6 +73,8 @@ _LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
using _Ep2 = __decay_t<_Ep>;
void* __ex = exception_ptr::__init_native_exception(
sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
+ // This could happen with older versions of libcxxrt/libcxxabi,
+ // which don't yet support direct exception initialization.
if (__ex == nullptr) {
try {
throw __e;
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index dbac19d84516c4f..f759f21787dabe5 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -15,6 +15,15 @@
#include <dlfcn.h>
#endif
+#if defined(LIBCXXRT)
+extern "C" {
+ // Although libcxxrt defines these two (as an ABI-library should),
+ // it doesn't declare them in some versions.
+ void *__cxa_allocate_exception(size_t thrown_size);
+ void __cxa_free_exception(void* thrown_exception);
+}
+#endif
+
namespace std {
exception_ptr::~exception_ptr() noexcept
@@ -43,6 +52,10 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
#if !defined(_WIN32)
+ // We perform a runtime lookup of __cxa_init_primary_exception to
+ // preserve compability with older versions of libcxxrt/libcxxabi.
+ // If the function is not present we return nullptr because no meaningful work can be done,
+ // and the caller knows how to handle this (it fallbacks to throw + catch).
using CxaInitPrimaryExceptionPrototype = void *(*)(void *, type_info *, void(*)(void *));
static CxaInitPrimaryExceptionPrototype cxa_init_primary_exception_fn = reinterpret_cast<CxaInitPrimaryExceptionPrototype>(
dlsym(RTLD_DEFAULT, "__cxa_init_primary_exception"));
>From f0ecbd3dec54aafc7796137f7f1bd6721a227e98 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sun, 15 Oct 2023 20:38:20 +0300
Subject: [PATCH 32/47] cleaner benchmark
---
libcxx/benchmarks/exception_ptr.bench.cpp | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/libcxx/benchmarks/exception_ptr.bench.cpp b/libcxx/benchmarks/exception_ptr.bench.cpp
index 95a59e5bd647e0a..1292ad7935e3751 100644
--- a/libcxx/benchmarks/exception_ptr.bench.cpp
+++ b/libcxx/benchmarks/exception_ptr.bench.cpp
@@ -8,11 +8,10 @@
#include <benchmark/benchmark.h>
#include <exception>
-#include <stdexcept>
void bm_make_exception_ptr(benchmark::State& state) {
for (auto _ : state) {
- benchmark::DoNotOptimize(std::make_exception_ptr(std::runtime_error{"Some error"}));
+ benchmark::DoNotOptimize(std::make_exception_ptr(42));
}
}
BENCHMARK(bm_make_exception_ptr)->ThreadRange(1, 8);
>From 1894d2921510b43b4587e59e7829d946623c3331 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Fri, 20 Oct 2023 01:07:14 +0300
Subject: [PATCH 33/47] revert the typeinfo header split, make exception
dependent on typeinfo instead
---
libcxx/include/CMakeLists.txt | 1 -
libcxx/include/__exception/exception_ptr.h | 4 +-
libcxx/include/__typeinfo/typeinfo.h | 336 -------------------
libcxx/include/libcxx.imp | 1 -
libcxx/include/module.modulemap.in | 5 -
libcxx/include/typeinfo | 355 ++++++++++++++++++++-
libcxx/utils/data/ignore_format.txt | 1 +
7 files changed, 356 insertions(+), 347 deletions(-)
delete mode 100644 libcxx/include/__typeinfo/typeinfo.h
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
index 482577069bd36ee..9b03430a87d8338 100644
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -832,7 +832,6 @@ set(files
__type_traits/underlying_type.h
__type_traits/unwrap_ref.h
__type_traits/void_t.h
- __typeinfo/typeinfo.h
__undef_macros
__utility/as_const.h
__utility/auto_cast.h
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 8008fc84c727045..e6b0876cc8e4f0a 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -13,7 +13,7 @@
#include <__exception/operations.h>
#include <__memory/addressof.h>
#include <__type_traits/decay.h>
-#include <__typeinfo/typeinfo.h>
+#include <typeinfo>
#include <cstddef>
#include <cstdlib>
@@ -69,7 +69,7 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
template <class _Ep>
_LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
-# if defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI)
+# if !defined(_LIBCPP_HAS_NO_RTTI) && (defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI))
using _Ep2 = __decay_t<_Ep>;
void* __ex = exception_ptr::__init_native_exception(
sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
diff --git a/libcxx/include/__typeinfo/typeinfo.h b/libcxx/include/__typeinfo/typeinfo.h
deleted file mode 100644
index 07b53af2b478588..000000000000000
--- a/libcxx/include/__typeinfo/typeinfo.h
+++ /dev/null
@@ -1,336 +0,0 @@
-// -*- C++ -*-
-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___TYPEINFO_TYPEINFO_H
-#define _LIBCPP___TYPEINFO_TYPEINFO_H
-
-#include <__availability>
-#include <__config>
-#include <__exception/exception.h>
-#include <__type_traits/is_constant_evaluated.h>
-#include <__verbose_abort>
-#include <cstddef>
-#include <cstdint>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-# pragma GCC system_header
-#endif
-
-#if defined(_LIBCPP_ABI_VCRUNTIME)
-# include <vcruntime_typeinfo.h>
-#else
-
-namespace std // purposefully not using versioning namespace
-{
-
-# if defined(_LIBCPP_ABI_MICROSOFT)
-
-class _LIBCPP_EXPORTED_FROM_ABI type_info {
- type_info& operator=(const type_info&);
- type_info(const type_info&);
-
- mutable struct {
- const char* __undecorated_name;
- const char __decorated_name[1];
- } __data;
-
- int __compare(const type_info& __rhs) const _NOEXCEPT;
-
-public:
- _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE
- virtual ~type_info();
-
- const char* name() const _NOEXCEPT;
-
- _LIBCPP_INLINE_VISIBILITY bool before(const type_info& __arg) const _NOEXCEPT { return __compare(__arg) < 0; }
-
- size_t hash_code() const _NOEXCEPT;
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX23 bool operator==(const type_info& __arg) const _NOEXCEPT {
- // When evaluated in a constant expression, both type infos simply can't come
- // from different translation units, so it is sufficient to compare their addresses.
- if (__libcpp_is_constant_evaluated()) {
- return this == &__arg;
- }
- return __compare(__arg) == 0;
- }
-
-# if _LIBCPP_STD_VER <= 17
- _LIBCPP_INLINE_VISIBILITY bool operator!=(const type_info& __arg) const _NOEXCEPT { return !operator==(__arg); }
-# endif
-};
-
-# else // !defined(_LIBCPP_ABI_MICROSOFT)
-
-// ========================================================================== //
-// Implementations
-// ========================================================================== //
-// ------------------------------------------------------------------------- //
-// Unique
-// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 1)
-// ------------------------------------------------------------------------- //
-// This implementation of type_info assumes a unique copy of the RTTI for a
-// given type inside a program. This is a valid assumption when abiding to the
-// Itanium ABI (http://itanium-cxx-abi.github.io/cxx-abi/abi.html#vtable-components).
-// Under this assumption, we can always compare the addresses of the type names
-// to implement equality-comparison of type_infos instead of having to perform
-// a deep string comparison.
-// -------------------------------------------------------------------------- //
-// NonUnique
-// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 2)
-// -------------------------------------------------------------------------- //
-// This implementation of type_info does not assume there is always a unique
-// copy of the RTTI for a given type inside a program. For various reasons
-// the linker may have failed to merge every copy of a types RTTI
-// (For example: -Bsymbolic or llvm.org/PR37398). Under this assumption, two
-// type_infos are equal if their addresses are equal or if a deep string
-// comparison is equal.
-// -------------------------------------------------------------------------- //
-// NonUniqueARMRTTIBit
-// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 3)
-// -------------------------------------------------------------------------- //
-// This implementation is specific to ARM64 on Apple platforms.
-//
-// This implementation of type_info does not assume always a unique copy of
-// the RTTI for a given type inside a program. When constructing the type_info,
-// the compiler packs the pointer to the type name into a uintptr_t and reserves
-// the high bit of that pointer, which is assumed to be free for use under that
-// ABI. If that high bit is set, that specific copy of the RTTI can't be assumed
-// to be unique within the program. If the high bit is unset, then the RTTI can
-// be assumed to be unique within the program.
-//
-// When comparing type_infos, if both RTTIs can be assumed to be unique, it
-// suffices to compare their addresses. If both the RTTIs can't be assumed to
-// be unique, we must perform a deep string comparison of the type names.
-// However, if one of the RTTIs is guaranteed unique and the other one isn't,
-// then both RTTIs are necessarily not to be considered equal.
-//
-// The intent of this design is to remove the need for weak symbols. Specifically,
-// if a type would normally have a default-visibility RTTI emitted as a weak
-// symbol, it is given hidden visibility instead and the non-unique bit is set.
-// Otherwise, types declared with hidden visibility are always considered to have
-// a unique RTTI: the RTTI is emitted with linkonce_odr linkage and is assumed
-// to be deduplicated by the linker within the linked image. Across linked image
-// boundaries, such types are thus considered different types.
-
-// This value can be overriden in the __config_site. When it's not overriden,
-// we pick a default implementation based on the platform here.
-# ifndef _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION
-
-// Windows and AIX binaries can't merge typeinfos, so use the NonUnique implementation.
-# if defined(_LIBCPP_OBJECT_FORMAT_COFF) || defined(_LIBCPP_OBJECT_FORMAT_XCOFF)
-# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 2
-
-// On arm64 on Apple platforms, use the special NonUniqueARMRTTIBit implementation.
-# elif defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__)
-# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 3
-
-// On all other platforms, assume the Itanium C++ ABI and use the Unique implementation.
-# else
-# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 1
-# endif
-# endif
-
-struct __type_info_implementations {
- struct __string_impl_base {
- typedef const char* __type_name_t;
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR static const char*
- __type_name_to_string(__type_name_t __v) _NOEXCEPT {
- return __v;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR static __type_name_t
- __string_to_type_name(const char* __v) _NOEXCEPT {
- return __v;
- }
- };
-
- struct __unique_impl : __string_impl_base {
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static size_t __hash(__type_name_t __v) _NOEXCEPT {
- return reinterpret_cast<size_t>(__v);
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
- __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- return __lhs == __rhs;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
- __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- return __lhs < __rhs;
- }
- };
-
- struct __non_unique_impl : __string_impl_base {
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static size_t __hash(__type_name_t __ptr) _NOEXCEPT {
- size_t __hash = 5381;
- while (unsigned char __c = static_cast<unsigned char>(*__ptr++))
- __hash = (__hash * 33) ^ __c;
- return __hash;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
- __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- return __lhs == __rhs || __builtin_strcmp(__lhs, __rhs) == 0;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
- __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- return __builtin_strcmp(__lhs, __rhs) < 0;
- }
- };
-
- struct __non_unique_arm_rtti_bit_impl {
- typedef uintptr_t __type_name_t;
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static const char*
- __type_name_to_string(__type_name_t __v) _NOEXCEPT {
- return reinterpret_cast<const char*>(__v & ~__non_unique_rtti_bit::value);
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static __type_name_t
- __string_to_type_name(const char* __v) _NOEXCEPT {
- return reinterpret_cast<__type_name_t>(__v);
- }
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static size_t __hash(__type_name_t __v) _NOEXCEPT {
- if (__is_type_name_unique(__v))
- return __v;
- return __non_unique_impl::__hash(__type_name_to_string(__v));
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
- __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- if (__lhs == __rhs)
- return true;
- if (__is_type_name_unique(__lhs) || __is_type_name_unique(__rhs))
- // Either both are unique and have a different address, or one of them
- // is unique and the other one isn't. In both cases they are unequal.
- return false;
- return __builtin_strcmp(__type_name_to_string(__lhs), __type_name_to_string(__rhs)) == 0;
- }
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE static bool
- __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
- if (__is_type_name_unique(__lhs) || __is_type_name_unique(__rhs))
- return __lhs < __rhs;
- return __builtin_strcmp(__type_name_to_string(__lhs), __type_name_to_string(__rhs)) < 0;
- }
-
- private:
- // The unique bit is the top bit. It is expected that __type_name_t is 64 bits when
- // this implementation is actually used.
- typedef integral_constant<__type_name_t, (1ULL << ((__CHAR_BIT__ * sizeof(__type_name_t)) - 1))>
- __non_unique_rtti_bit;
-
- _LIBCPP_INLINE_VISIBILITY static bool __is_type_name_unique(__type_name_t __lhs) _NOEXCEPT {
- return !(__lhs & __non_unique_rtti_bit::value);
- }
- };
-
- typedef
-# if _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 1
- __unique_impl
-# elif _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 2
- __non_unique_impl
-# elif _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 3
- __non_unique_arm_rtti_bit_impl
-# else
-# error invalid configuration for _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION
-# endif
- __impl;
-};
-
-class _LIBCPP_EXPORTED_FROM_ABI type_info {
- type_info& operator=(const type_info&);
- type_info(const type_info&);
-
-protected:
- typedef __type_info_implementations::__impl __impl;
-
- __impl::__type_name_t __type_name;
-
- _LIBCPP_INLINE_VISIBILITY explicit type_info(const char* __n) : __type_name(__impl::__string_to_type_name(__n)) {}
-
-public:
- _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE
- virtual ~type_info();
-
- _LIBCPP_INLINE_VISIBILITY const char* name() const _NOEXCEPT { return __impl::__type_name_to_string(__type_name); }
-
- _LIBCPP_INLINE_VISIBILITY bool before(const type_info& __arg) const _NOEXCEPT {
- return __impl::__lt(__type_name, __arg.__type_name);
- }
-
- _LIBCPP_INLINE_VISIBILITY size_t hash_code() const _NOEXCEPT { return __impl::__hash(__type_name); }
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX23 bool operator==(const type_info& __arg) const _NOEXCEPT {
- // When evaluated in a constant expression, both type infos simply can't come
- // from different translation units, so it is sufficient to compare their addresses.
- if (__libcpp_is_constant_evaluated()) {
- return this == &__arg;
- }
- return __impl::__eq(__type_name, __arg.__type_name);
- }
-
-# if _LIBCPP_STD_VER <= 17
- _LIBCPP_INLINE_VISIBILITY bool operator!=(const type_info& __arg) const _NOEXCEPT { return !operator==(__arg); }
-# endif
-};
-# endif // defined(_LIBCPP_ABI_MICROSOFT)
-
-class _LIBCPP_EXPORTED_FROM_ABI bad_cast : public exception {
-public:
- bad_cast() _NOEXCEPT;
- _LIBCPP_HIDE_FROM_ABI bad_cast(const bad_cast&) _NOEXCEPT = default;
- _LIBCPP_HIDE_FROM_ABI bad_cast& operator=(const bad_cast&) _NOEXCEPT = default;
- ~bad_cast() _NOEXCEPT override;
- const char* what() const _NOEXCEPT override;
-};
-
-class _LIBCPP_EXPORTED_FROM_ABI bad_typeid : public exception {
-public:
- bad_typeid() _NOEXCEPT;
- _LIBCPP_HIDE_FROM_ABI bad_typeid(const bad_typeid&) _NOEXCEPT = default;
- _LIBCPP_HIDE_FROM_ABI bad_typeid& operator=(const bad_typeid&) _NOEXCEPT = default;
- ~bad_typeid() _NOEXCEPT override;
- const char* what() const _NOEXCEPT override;
-};
-
-} // namespace std
-
-#endif // defined(_LIBCPP_ABI_VCRUNTIME)
-
-#if defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
-
-namespace std {
-
-class bad_cast : public exception {
-public:
- bad_cast() _NOEXCEPT : exception("bad cast") {}
-
-private:
- bad_cast(const char* const __message) _NOEXCEPT : exception(__message) {}
-};
-
-class bad_typeid : public exception {
-public:
- bad_typeid() _NOEXCEPT : exception("bad typeid") {}
-
-private:
- bad_typeid(const char* const __message) _NOEXCEPT : exception(__message) {}
-};
-
-} // namespace std
-
-#endif // defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY void __throw_bad_cast() {
-#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
- throw bad_cast();
-#else
- _LIBCPP_VERBOSE_ABORT("bad_cast was thrown in -fno-exceptions mode");
-#endif
-}
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___TYPEINFO_TYPEINFO_H
diff --git a/libcxx/include/libcxx.imp b/libcxx/include/libcxx.imp
index f7e906e024f33a4..3eb2aa849314824 100644
--- a/libcxx/include/libcxx.imp
+++ b/libcxx/include/libcxx.imp
@@ -48,7 +48,6 @@
{ include: [ "@<__thread/.*>", "private", "<thread>", "public" ] },
{ include: [ "@<__tuple/.*>", "private", "<tuple>", "public" ] },
{ include: [ "@<__type_traits/.*>", "private", "<type_traits>", "public" ] },
- { include: [ "@<__typeinfo/.*>", "private", "<typeinfo>", "public" ] },
{ include: [ "@<__utility/.*>", "private", "<utility>", "public" ] },
{ include: [ "@<__variant/.*>", "private", "<variant>", "public" ] },
]
diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
index 2a72758a2dd1ed7..3e5a8a391b6e69c 100644
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -1267,11 +1267,6 @@ module std_private_debug_utils_strict_weak_ordering_check [system] {
export std_private_type_traits_is_constant_evaluated
}
-module std_private_typeinfo_typeinfo [system] {
- header "__typeinfo/typeinfo.h"
- export *
-}
-
module std_private_exception_exception [system] { header "__exception/exception.h" }
module std_private_exception_exception_ptr [system] {
header "__exception/exception_ptr.h"
diff --git a/libcxx/include/typeinfo b/libcxx/include/typeinfo
index e869cd5e6750787..797d815135cb2e5 100644
--- a/libcxx/include/typeinfo
+++ b/libcxx/include/typeinfo
@@ -57,16 +57,367 @@ public:
*/
#include <__assert> // all public C++ headers provide the assertion handler
+#include <__availability>
#include <__config>
-#include <__typeinfo/typeinfo.h>
+#include <__exception/exception.h>
+#include <__type_traits/is_constant_evaluated.h>
+#include <__verbose_abort>
+#include <cstddef>
+#include <cstdint>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
+#if defined(_LIBCPP_ABI_VCRUNTIME)
+#include <vcruntime_typeinfo.h>
+#else
+
+namespace std // purposefully not using versioning namespace
+{
+
+
+#if defined(_LIBCPP_ABI_MICROSOFT)
+
+class _LIBCPP_EXPORTED_FROM_ABI type_info
+{
+ type_info& operator=(const type_info&);
+ type_info(const type_info&);
+
+ mutable struct {
+ const char *__undecorated_name;
+ const char __decorated_name[1];
+ } __data;
+
+ int __compare(const type_info &__rhs) const _NOEXCEPT;
+
+public:
+ _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE
+ virtual ~type_info();
+
+ const char *name() const _NOEXCEPT;
+
+ _LIBCPP_INLINE_VISIBILITY
+ bool before(const type_info& __arg) const _NOEXCEPT {
+ return __compare(__arg) < 0;
+ }
+
+ size_t hash_code() const _NOEXCEPT;
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX23
+ bool operator==(const type_info& __arg) const _NOEXCEPT {
+ // When evaluated in a constant expression, both type infos simply can't come
+ // from different translation units, so it is sufficient to compare their addresses.
+ if (__libcpp_is_constant_evaluated()) {
+ return this == &__arg;
+ }
+ return __compare(__arg) == 0;
+ }
+
+#if _LIBCPP_STD_VER <= 17
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator!=(const type_info& __arg) const _NOEXCEPT
+ { return !operator==(__arg); }
+#endif
+};
+
+#else // !defined(_LIBCPP_ABI_MICROSOFT)
+
+// ========================================================================== //
+// Implementations
+// ========================================================================== //
+// ------------------------------------------------------------------------- //
+// Unique
+// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 1)
+// ------------------------------------------------------------------------- //
+// This implementation of type_info assumes a unique copy of the RTTI for a
+// given type inside a program. This is a valid assumption when abiding to the
+// Itanium ABI (http://itanium-cxx-abi.github.io/cxx-abi/abi.html#vtable-components).
+// Under this assumption, we can always compare the addresses of the type names
+// to implement equality-comparison of type_infos instead of having to perform
+// a deep string comparison.
+// -------------------------------------------------------------------------- //
+// NonUnique
+// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 2)
+// -------------------------------------------------------------------------- //
+// This implementation of type_info does not assume there is always a unique
+// copy of the RTTI for a given type inside a program. For various reasons
+// the linker may have failed to merge every copy of a types RTTI
+// (For example: -Bsymbolic or llvm.org/PR37398). Under this assumption, two
+// type_infos are equal if their addresses are equal or if a deep string
+// comparison is equal.
+// -------------------------------------------------------------------------- //
+// NonUniqueARMRTTIBit
+// (_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION = 3)
+// -------------------------------------------------------------------------- //
+// This implementation is specific to ARM64 on Apple platforms.
+//
+// This implementation of type_info does not assume always a unique copy of
+// the RTTI for a given type inside a program. When constructing the type_info,
+// the compiler packs the pointer to the type name into a uintptr_t and reserves
+// the high bit of that pointer, which is assumed to be free for use under that
+// ABI. If that high bit is set, that specific copy of the RTTI can't be assumed
+// to be unique within the program. If the high bit is unset, then the RTTI can
+// be assumed to be unique within the program.
+//
+// When comparing type_infos, if both RTTIs can be assumed to be unique, it
+// suffices to compare their addresses. If both the RTTIs can't be assumed to
+// be unique, we must perform a deep string comparison of the type names.
+// However, if one of the RTTIs is guaranteed unique and the other one isn't,
+// then both RTTIs are necessarily not to be considered equal.
+//
+// The intent of this design is to remove the need for weak symbols. Specifically,
+// if a type would normally have a default-visibility RTTI emitted as a weak
+// symbol, it is given hidden visibility instead and the non-unique bit is set.
+// Otherwise, types declared with hidden visibility are always considered to have
+// a unique RTTI: the RTTI is emitted with linkonce_odr linkage and is assumed
+// to be deduplicated by the linker within the linked image. Across linked image
+// boundaries, such types are thus considered different types.
+
+// This value can be overriden in the __config_site. When it's not overriden,
+// we pick a default implementation based on the platform here.
+#ifndef _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION
+
+ // Windows and AIX binaries can't merge typeinfos, so use the NonUnique implementation.
+# if defined(_LIBCPP_OBJECT_FORMAT_COFF) || defined(_LIBCPP_OBJECT_FORMAT_XCOFF)
+# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 2
+
+ // On arm64 on Apple platforms, use the special NonUniqueARMRTTIBit implementation.
+# elif defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__)
+# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 3
+
+ // On all other platforms, assume the Itanium C++ ABI and use the Unique implementation.
+# else
+# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 1
+# endif
+#endif
+
+struct __type_info_implementations {
+ struct __string_impl_base {
+ typedef const char* __type_name_t;
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ _LIBCPP_CONSTEXPR static const char* __type_name_to_string(__type_name_t __v) _NOEXCEPT {
+ return __v;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ _LIBCPP_CONSTEXPR static __type_name_t __string_to_type_name(const char* __v) _NOEXCEPT {
+ return __v;
+ }
+ };
+
+ struct __unique_impl : __string_impl_base {
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static size_t __hash(__type_name_t __v) _NOEXCEPT {
+ return reinterpret_cast<size_t>(__v);
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static bool __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ return __lhs == __rhs;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static bool __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ return __lhs < __rhs;
+ }
+ };
+
+ struct __non_unique_impl : __string_impl_base {
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static size_t __hash(__type_name_t __ptr) _NOEXCEPT {
+ size_t __hash = 5381;
+ while (unsigned char __c = static_cast<unsigned char>(*__ptr++))
+ __hash = (__hash * 33) ^ __c;
+ return __hash;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static bool __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ return __lhs == __rhs || __builtin_strcmp(__lhs, __rhs) == 0;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static bool __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ return __builtin_strcmp(__lhs, __rhs) < 0;
+ }
+ };
+
+ struct __non_unique_arm_rtti_bit_impl {
+ typedef uintptr_t __type_name_t;
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static const char* __type_name_to_string(__type_name_t __v) _NOEXCEPT {
+ return reinterpret_cast<const char*>(__v &
+ ~__non_unique_rtti_bit::value);
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static __type_name_t __string_to_type_name(const char* __v) _NOEXCEPT {
+ return reinterpret_cast<__type_name_t>(__v);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static size_t __hash(__type_name_t __v) _NOEXCEPT {
+ if (__is_type_name_unique(__v))
+ return __v;
+ return __non_unique_impl::__hash(__type_name_to_string(__v));
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static bool __eq(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ if (__lhs == __rhs)
+ return true;
+ if (__is_type_name_unique(__lhs) || __is_type_name_unique(__rhs))
+ // Either both are unique and have a different address, or one of them
+ // is unique and the other one isn't. In both cases they are unequal.
+ return false;
+ return __builtin_strcmp(__type_name_to_string(__lhs), __type_name_to_string(__rhs)) == 0;
+ }
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_ALWAYS_INLINE
+ static bool __lt(__type_name_t __lhs, __type_name_t __rhs) _NOEXCEPT {
+ if (__is_type_name_unique(__lhs) || __is_type_name_unique(__rhs))
+ return __lhs < __rhs;
+ return __builtin_strcmp(__type_name_to_string(__lhs), __type_name_to_string(__rhs)) < 0;
+ }
+
+ private:
+ // The unique bit is the top bit. It is expected that __type_name_t is 64 bits when
+ // this implementation is actually used.
+ typedef integral_constant<__type_name_t,
+ (1ULL << ((__CHAR_BIT__ * sizeof(__type_name_t)) - 1))> __non_unique_rtti_bit;
+
+ _LIBCPP_INLINE_VISIBILITY
+ static bool __is_type_name_unique(__type_name_t __lhs) _NOEXCEPT {
+ return !(__lhs & __non_unique_rtti_bit::value);
+ }
+ };
+
+ typedef
+#if _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 1
+ __unique_impl
+#elif _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 2
+ __non_unique_impl
+#elif _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION == 3
+ __non_unique_arm_rtti_bit_impl
+#else
+# error invalid configuration for _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION
+#endif
+ __impl;
+};
+
+class _LIBCPP_EXPORTED_FROM_ABI type_info
+{
+ type_info& operator=(const type_info&);
+ type_info(const type_info&);
+
+ protected:
+ typedef __type_info_implementations::__impl __impl;
+
+ __impl::__type_name_t __type_name;
+
+ _LIBCPP_INLINE_VISIBILITY
+ explicit type_info(const char* __n)
+ : __type_name(__impl::__string_to_type_name(__n)) {}
+
+public:
+ _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE
+ virtual ~type_info();
+
+ _LIBCPP_INLINE_VISIBILITY
+ const char* name() const _NOEXCEPT
+ {
+ return __impl::__type_name_to_string(__type_name);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY
+ bool before(const type_info& __arg) const _NOEXCEPT
+ {
+ return __impl::__lt(__type_name, __arg.__type_name);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY
+ size_t hash_code() const _NOEXCEPT
+ {
+ return __impl::__hash(__type_name);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX23
+ bool operator==(const type_info& __arg) const _NOEXCEPT
+ {
+ // When evaluated in a constant expression, both type infos simply can't come
+ // from different translation units, so it is sufficient to compare their addresses.
+ if (__libcpp_is_constant_evaluated()) {
+ return this == &__arg;
+ }
+ return __impl::__eq(__type_name, __arg.__type_name);
+ }
+
+#if _LIBCPP_STD_VER <= 17
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator!=(const type_info& __arg) const _NOEXCEPT
+ { return !operator==(__arg); }
+#endif
+};
+#endif // defined(_LIBCPP_ABI_MICROSOFT)
+
+class _LIBCPP_EXPORTED_FROM_ABI bad_cast
+ : public exception
+{
+ public:
+ bad_cast() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI bad_cast(const bad_cast&) _NOEXCEPT = default;
+ _LIBCPP_HIDE_FROM_ABI bad_cast& operator=(const bad_cast&) _NOEXCEPT = default;
+ ~bad_cast() _NOEXCEPT override;
+ const char* what() const _NOEXCEPT override;
+};
+
+class _LIBCPP_EXPORTED_FROM_ABI bad_typeid
+ : public exception
+{
+ public:
+ bad_typeid() _NOEXCEPT;
+ _LIBCPP_HIDE_FROM_ABI bad_typeid(const bad_typeid&) _NOEXCEPT = default;
+ _LIBCPP_HIDE_FROM_ABI bad_typeid& operator=(const bad_typeid&) _NOEXCEPT = default;
+ ~bad_typeid() _NOEXCEPT override;
+ const char* what() const _NOEXCEPT override;
+};
+
+} // namespace std
+
+#endif // defined(_LIBCPP_ABI_VCRUNTIME)
+
+#if defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
+
+namespace std {
+
+class bad_cast : public exception {
+public:
+ bad_cast() _NOEXCEPT : exception("bad cast") {}
+
+private:
+ bad_cast(const char* const __message) _NOEXCEPT : exception(__message) {}
+};
+
+class bad_typeid : public exception {
+public:
+ bad_typeid() _NOEXCEPT : exception("bad typeid") {}
+
+private:
+ bad_typeid(const char* const __message) _NOEXCEPT : exception(__message) {}
+};
+
+} // namespace std
+
+#endif // defined(_LIBCPP_ABI_VCRUNTIME) && _HAS_EXCEPTIONS == 0
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
+void __throw_bad_cast()
+{
+#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
+ throw bad_cast();
+#else
+ _LIBCPP_VERBOSE_ABORT("bad_cast was thrown in -fno-exceptions mode");
+#endif
+}
+_LIBCPP_END_NAMESPACE_STD
+
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <cstdlib>
-# include <exception>
# include <type_traits>
#endif
diff --git a/libcxx/utils/data/ignore_format.txt b/libcxx/utils/data/ignore_format.txt
index be01186536cb506..664e9f51e9ba7fd 100644
--- a/libcxx/utils/data/ignore_format.txt
+++ b/libcxx/utils/data/ignore_format.txt
@@ -463,6 +463,7 @@ libcxx/include/__tuple/tuple_like_ext.h
libcxx/include/__tuple/tuple_size.h
libcxx/include/__tuple/tuple_types.h
libcxx/include/typeindex
+libcxx/include/typeinfo
libcxx/include/uchar.h
libcxx/include/unordered_map
libcxx/include/unordered_set
>From 6c77ecf0956931f8d3fb11fa80f9278a40ff2c7d Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Fri, 20 Oct 2023 02:22:51 +0300
Subject: [PATCH 34/47] use weak linkage instead of dlsym
---
.../runtime/exception_pointer_cxxabi.ipp | 35 ++++++++-----------
libcxxabi/include/cxxabi.h | 2 +-
2 files changed, 15 insertions(+), 22 deletions(-)
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index f759f21787dabe5..71a6eae90c7ae09 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -11,16 +11,20 @@
#error this header may only be used with libc++abi or libcxxrt
#endif
-#if !defined(_WIN32)
-#include <dlfcn.h>
-#endif
-
#if defined(LIBCXXRT)
extern "C" {
// Although libcxxrt defines these two (as an ABI-library should),
// it doesn't declare them in some versions.
void *__cxa_allocate_exception(size_t thrown_size);
void __cxa_free_exception(void* thrown_exception);
+
+ __attribute__((weak))
+ __cxa_exception *__cxa_init_primary_exception(void *, std::type_info *, void(*)(void*));
+}
+#else
+extern "C" {
+ __attribute__((weak))
+ __cxa_exception *__cxa_init_primary_exception(void *, std::type_info *, void(*)(void*)) throw();
}
#endif
@@ -51,25 +55,14 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
- #if !defined(_WIN32)
- // We perform a runtime lookup of __cxa_init_primary_exception to
- // preserve compability with older versions of libcxxrt/libcxxabi.
- // If the function is not present we return nullptr because no meaningful work can be done,
- // and the caller knows how to handle this (it fallbacks to throw + catch).
- using CxaInitPrimaryExceptionPrototype = void *(*)(void *, type_info *, void(*)(void *));
- static CxaInitPrimaryExceptionPrototype cxa_init_primary_exception_fn = reinterpret_cast<CxaInitPrimaryExceptionPrototype>(
- dlsym(RTLD_DEFAULT, "__cxa_init_primary_exception"));
-
- if (cxa_init_primary_exception_fn == nullptr) {
+ if (__cxa_init_primary_exception != nullptr) {
+ void *__ex = __cxa_allocate_exception(size);
+ (void)__cxa_init_primary_exception(__ex, tinfo, dest);
+ return __ex;
+ }
+ else {
return nullptr;
}
-
- void *__ex = __cxa_allocate_exception(size);
- (void)cxa_init_primary_exception_fn(__ex, tinfo, dest);
- return __ex;
- #else
- return nullptr;
- #endif
}
void exception_ptr::__free_native_exception(void *thrown_object) noexcept
diff --git a/libcxxabi/include/cxxabi.h b/libcxxabi/include/cxxabi.h
index 03ec7986e209126..0ae9aebcee5c934 100644
--- a/libcxxabi/include/cxxabi.h
+++ b/libcxxabi/include/cxxabi.h
@@ -46,7 +46,7 @@ extern _LIBCXXABI_FUNC_VIS void *
__cxa_allocate_exception(size_t thrown_size) throw();
extern _LIBCXXABI_FUNC_VIS void
__cxa_free_exception(void *thrown_exception) throw();
-// This function is an llvm extension
+// This function is an LLVM extension, which mirros the same extension in libsupc++ and libcxxrt
extern _LIBCXXABI_FUNC_VIS __cxa_exception*
__cxa_init_primary_exception(void* object, std::type_info* tinfo, void(_LIBCXXABI_DTOR_FUNC* dest)(void*)) throw();
>From 48bbdb71bda04e3c3fe9e0c400bb20aa1bdd3cad Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Fri, 20 Oct 2023 02:25:07 +0300
Subject: [PATCH 35/47] + clang-format
---
libcxx/include/__exception/exception_ptr.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index e6b0876cc8e4f0a..d9ca69290c9db0e 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -13,9 +13,9 @@
#include <__exception/operations.h>
#include <__memory/addressof.h>
#include <__type_traits/decay.h>
-#include <typeinfo>
#include <cstddef>
#include <cstdlib>
+#include <typeinfo>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
>From 6072c62240aa0e46c98131928c1b73fc07f368db Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Fri, 20 Oct 2023 03:23:49 +0300
Subject: [PATCH 36/47] fix transitive_includes
---
libcxx/test/libcxx/transitive_includes/cxx03.csv | 3 +--
libcxx/test/libcxx/transitive_includes/cxx11.csv | 3 +--
libcxx/test/libcxx/transitive_includes/cxx14.csv | 3 +--
libcxx/test/libcxx/transitive_includes/cxx17.csv | 3 +--
libcxx/test/libcxx/transitive_includes/cxx20.csv | 3 +--
libcxx/test/libcxx/transitive_includes/cxx23.csv | 2 +-
libcxx/test/libcxx/transitive_includes/cxx26.csv | 2 +-
7 files changed, 7 insertions(+), 12 deletions(-)
diff --git a/libcxx/test/libcxx/transitive_includes/cxx03.csv b/libcxx/test/libcxx/transitive_includes/cxx03.csv
index 04cc0354714493d..cfe9cb04fdd6290 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx03.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx03.csv
@@ -219,9 +219,9 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
-exception cstdint
exception cstdlib
exception type_traits
+exception typeinfo
exception version
execution cstddef
execution version
@@ -908,7 +908,6 @@ typeindex version
typeinfo cstddef
typeinfo cstdint
typeinfo cstdlib
-typeinfo exception
typeinfo type_traits
unordered_map algorithm
unordered_map bit
diff --git a/libcxx/test/libcxx/transitive_includes/cxx11.csv b/libcxx/test/libcxx/transitive_includes/cxx11.csv
index 47048bef817749c..a9e60010b54bb87 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx11.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx11.csv
@@ -220,9 +220,9 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
-exception cstdint
exception cstdlib
exception type_traits
+exception typeinfo
exception version
execution cstddef
execution version
@@ -914,7 +914,6 @@ typeindex version
typeinfo cstddef
typeinfo cstdint
typeinfo cstdlib
-typeinfo exception
typeinfo type_traits
unordered_map algorithm
unordered_map bit
diff --git a/libcxx/test/libcxx/transitive_includes/cxx14.csv b/libcxx/test/libcxx/transitive_includes/cxx14.csv
index d7c12b65941b5e6..1f991b4ea86fd07 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx14.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx14.csv
@@ -220,9 +220,9 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
-exception cstdint
exception cstdlib
exception type_traits
+exception typeinfo
exception version
execution cstddef
execution version
@@ -916,7 +916,6 @@ typeindex version
typeinfo cstddef
typeinfo cstdint
typeinfo cstdlib
-typeinfo exception
typeinfo type_traits
unordered_map algorithm
unordered_map bit
diff --git a/libcxx/test/libcxx/transitive_includes/cxx17.csv b/libcxx/test/libcxx/transitive_includes/cxx17.csv
index d7c12b65941b5e6..1f991b4ea86fd07 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx17.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx17.csv
@@ -220,9 +220,9 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
-exception cstdint
exception cstdlib
exception type_traits
+exception typeinfo
exception version
execution cstddef
execution version
@@ -916,7 +916,6 @@ typeindex version
typeinfo cstddef
typeinfo cstdint
typeinfo cstdlib
-typeinfo exception
typeinfo type_traits
unordered_map algorithm
unordered_map bit
diff --git a/libcxx/test/libcxx/transitive_includes/cxx20.csv b/libcxx/test/libcxx/transitive_includes/cxx20.csv
index c7189e616402f73..19006fdabcbf13d 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx20.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx20.csv
@@ -226,9 +226,9 @@ deque type_traits
deque typeinfo
deque version
exception cstddef
-exception cstdint
exception cstdlib
exception type_traits
+exception typeinfo
exception version
execution cstddef
execution version
@@ -920,7 +920,6 @@ typeindex version
typeinfo cstddef
typeinfo cstdint
typeinfo cstdlib
-typeinfo exception
typeinfo type_traits
unordered_map algorithm
unordered_map bit
diff --git a/libcxx/test/libcxx/transitive_includes/cxx23.csv b/libcxx/test/libcxx/transitive_includes/cxx23.csv
index 64c292b69ce9f43..4f2fb9dc0022285 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx23.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx23.csv
@@ -157,8 +157,8 @@ deque stdexcept
deque tuple
deque version
exception cstddef
-exception cstdint
exception cstdlib
+exception typeinfo
exception version
execution cstddef
execution version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx26.csv b/libcxx/test/libcxx/transitive_includes/cxx26.csv
index 64c292b69ce9f43..4f2fb9dc0022285 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx26.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx26.csv
@@ -157,8 +157,8 @@ deque stdexcept
deque tuple
deque version
exception cstddef
-exception cstdint
exception cstdlib
+exception typeinfo
exception version
execution cstddef
execution version
>From 12d27974360c09edb571e9f7f1b0ada5c4787bd6 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Fri, 20 Oct 2023 04:35:32 +0300
Subject: [PATCH 37/47] some formatting again
---
libcxx/src/support/runtime/exception_pointer_cxxabi.ipp | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index 71a6eae90c7ae09..580363ccc0833d8 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -18,13 +18,11 @@ extern "C" {
void *__cxa_allocate_exception(size_t thrown_size);
void __cxa_free_exception(void* thrown_exception);
- __attribute__((weak))
- __cxa_exception *__cxa_init_primary_exception(void *, std::type_info *, void(*)(void*));
+ __attribute__((weak)) __cxa_exception *__cxa_init_primary_exception(void *, std::type_info *, void(*)(void*));
}
#else
extern "C" {
- __attribute__((weak))
- __cxa_exception *__cxa_init_primary_exception(void *, std::type_info *, void(*)(void*)) throw();
+ __attribute__((weak)) __cxa_exception *__cxa_init_primary_exception(void *, std::type_info *, void(*)(void*)) throw();
}
#endif
>From e5b3f0a566ec9c53554558700c2131485de2a5d3 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Fri, 20 Oct 2023 06:49:00 +0300
Subject: [PATCH 38/47] add libsupc++ support
---
libcxx/include/__exception/exception_ptr.h | 4 +--
.../runtime/exception_pointer_cxxabi.ipp | 2 ++
.../runtime/exception_pointer_glibcxx.ipp | 31 +++++++++++++++++++
3 files changed, 35 insertions(+), 2 deletions(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index d9ca69290c9db0e..25f534c3449fe28 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -29,7 +29,7 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
void* __ptr_;
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
-# if defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI)
+# if !defined(_LIBCPP_HAS_NO_RTTI)
template <class _Ep>
static inline void __dest_thunk(void* __x) {
static_cast<_Ep*>(__x)->~_Ep();
@@ -69,7 +69,7 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
template <class _Ep>
_LIBCPP_HIDE_FROM_ABI exception_ptr make_exception_ptr(_Ep __e) _NOEXCEPT {
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
-# if !defined(_LIBCPP_HAS_NO_RTTI) && (defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI))
+# if !defined(_LIBCPP_HAS_NO_RTTI)
using _Ep2 = __decay_t<_Ep>;
void* __ex = exception_ptr::__init_native_exception(
sizeof(_Ep), const_cast<std::type_info*>(&typeid(_Ep)), exception_ptr::__dest_thunk<_Ep2>);
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index 580363ccc0833d8..dedb5293c188863 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -51,6 +51,7 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
}
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
+# if !defined(_LIBCPP_HAS_NO_RTTI)
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
if (__cxa_init_primary_exception != nullptr) {
@@ -75,6 +76,7 @@ exception_ptr exception_ptr::__from_native_exception_pointer(void *__e) noexcept
return ptr;
}
+# endif
# endif
nested_exception::nested_exception() noexcept
diff --git a/libcxx/src/support/runtime/exception_pointer_glibcxx.ipp b/libcxx/src/support/runtime/exception_pointer_glibcxx.ipp
index 983a08808dccb7f..225edcd24f968a8 100644
--- a/libcxx/src/support/runtime/exception_pointer_glibcxx.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_glibcxx.ipp
@@ -16,6 +16,13 @@
// stable ABI), and its rethrow_exception(std::__exception_ptr::exception_ptr)
// function.
+extern "C" {
+ void* __cxa_allocate_exception(size_t) throw();
+ void __cxa_free_exception(void*) throw();
+
+ void* __cxa_init_primary_exception(void*, std::type_info*, void(*)(void*)) throw();
+}
+
namespace std {
namespace __exception_ptr
@@ -25,6 +32,7 @@ struct exception_ptr
{
void* __ptr_;
+ exception_ptr(void* obj) noexcept;
exception_ptr(const exception_ptr&) noexcept;
exception_ptr& operator=(const exception_ptr&) noexcept;
~exception_ptr() noexcept;
@@ -53,6 +61,29 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
return *this;
}
+# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
+# if !defined(_LIBCPP_HAS_NO_RTTI)
+void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
+{
+ void *__ex = __cxa_allocate_exception(size);
+ (void)__cxa_init_primary_exception(__ex, tinfo, dest);
+ return __ex;
+}
+
+void exception_ptr::__free_native_exception(void *thrown_object) noexcept
+{
+ __cxa_free_exception(thrown_object);
+}
+
+exception_ptr exception_ptr::__from_native_exception_pointer(void *__e) noexcept {
+ exception_ptr ptr{};
+ new (reinterpret_cast<void*>(&ptr)) __exception_ptr::exception_ptr(__e);
+
+ return ptr;
+}
+# endif
+# endif
+
nested_exception::nested_exception() noexcept
: __ptr_(current_exception())
{
>From b6f1292f5b115970af30dead7d46548aa21644e6 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Fri, 20 Oct 2023 21:47:48 +0300
Subject: [PATCH 39/47] make tidy happy: + _LIBCPP_HIDE_FROM_ABI
---
libcxx/include/__exception/exception_ptr.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index 25f534c3449fe28..a2264b03559ec08 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -31,7 +31,7 @@ class _LIBCPP_EXPORTED_FROM_ABI exception_ptr {
# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
# if !defined(_LIBCPP_HAS_NO_RTTI)
template <class _Ep>
- static inline void __dest_thunk(void* __x) {
+ _LIBCPP_HIDE_FROM_ABI static inline void __dest_thunk(void* __x) {
static_cast<_Ep*>(__x)->~_Ep();
}
>From 17dc3aa1489008d23d1594858a3505b9bd463279 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 21 Oct 2023 04:01:55 +0300
Subject: [PATCH 40/47] include new explicitly
---
libcxx/include/__exception/exception_ptr.h | 1 +
libcxx/test/libcxx/transitive_includes/cxx03.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx11.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx14.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx17.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx20.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx23.csv | 1 +
libcxx/test/libcxx/transitive_includes/cxx26.csv | 1 +
8 files changed, 8 insertions(+)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
index a2264b03559ec08..94e1c01f8b224e6 100644
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -15,6 +15,7 @@
#include <__type_traits/decay.h>
#include <cstddef>
#include <cstdlib>
+#include <new>
#include <typeinfo>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/test/libcxx/transitive_includes/cxx03.csv b/libcxx/test/libcxx/transitive_includes/cxx03.csv
index cfe9cb04fdd6290..ff564ffee5a325f 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx03.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx03.csv
@@ -220,6 +220,7 @@ deque typeinfo
deque version
exception cstddef
exception cstdlib
+exception new
exception type_traits
exception typeinfo
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx11.csv b/libcxx/test/libcxx/transitive_includes/cxx11.csv
index a9e60010b54bb87..1f3bd5bc750fc87 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx11.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx11.csv
@@ -221,6 +221,7 @@ deque typeinfo
deque version
exception cstddef
exception cstdlib
+exception new
exception type_traits
exception typeinfo
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx14.csv b/libcxx/test/libcxx/transitive_includes/cxx14.csv
index 1f991b4ea86fd07..5d90b1da299e431 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx14.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx14.csv
@@ -221,6 +221,7 @@ deque typeinfo
deque version
exception cstddef
exception cstdlib
+exception new
exception type_traits
exception typeinfo
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx17.csv b/libcxx/test/libcxx/transitive_includes/cxx17.csv
index 1f991b4ea86fd07..5d90b1da299e431 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx17.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx17.csv
@@ -221,6 +221,7 @@ deque typeinfo
deque version
exception cstddef
exception cstdlib
+exception new
exception type_traits
exception typeinfo
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx20.csv b/libcxx/test/libcxx/transitive_includes/cxx20.csv
index 19006fdabcbf13d..7c8cd552cff1c37 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx20.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx20.csv
@@ -227,6 +227,7 @@ deque typeinfo
deque version
exception cstddef
exception cstdlib
+exception new
exception type_traits
exception typeinfo
exception version
diff --git a/libcxx/test/libcxx/transitive_includes/cxx23.csv b/libcxx/test/libcxx/transitive_includes/cxx23.csv
index 4f2fb9dc0022285..49988e1c55c6565 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx23.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx23.csv
@@ -158,6 +158,7 @@ deque tuple
deque version
exception cstddef
exception cstdlib
+exception new
exception typeinfo
exception version
execution cstddef
diff --git a/libcxx/test/libcxx/transitive_includes/cxx26.csv b/libcxx/test/libcxx/transitive_includes/cxx26.csv
index 4f2fb9dc0022285..49988e1c55c6565 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx26.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx26.csv
@@ -158,6 +158,7 @@ deque tuple
deque version
exception cstddef
exception cstdlib
+exception new
exception typeinfo
exception version
execution cstddef
>From d3a6e5309eb904bbb8a62b2405f578800c721aef Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 21 Oct 2023 04:25:29 +0300
Subject: [PATCH 41/47] regenerate cxx-abilist
---
...nknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist | 1 +
1 file changed, 1 insertion(+)
diff --git a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
index a391ac9be3c5130..71c492deced3c6a 100644
--- a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -54,6 +54,7 @@
{'is_defined': False, 'name': '__cxa_guard_acquire', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_guard_release', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_increment_exception_refcount', 'type': 'FUNC'}
+{'is_defined': False, 'name': '__cxa_init_primary_exception', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_pure_virtual', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_rethrow', 'type': 'FUNC'}
{'is_defined': False, 'name': '__cxa_rethrow_primary_exception', 'type': 'FUNC'}
>From 6b22f86f99e3a1c9e0a8a70b76ab671902cf1752 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 21 Oct 2023 05:31:34 +0300
Subject: [PATCH 42/47] drop new -> exception include dependency
---
libcxx/include/new | 1 -
libcxx/test/libcxx/transitive_includes/cxx03.csv | 1 -
libcxx/test/libcxx/transitive_includes/cxx11.csv | 1 -
libcxx/test/libcxx/transitive_includes/cxx14.csv | 1 -
libcxx/test/libcxx/transitive_includes/cxx17.csv | 1 -
libcxx/test/libcxx/transitive_includes/cxx20.csv | 1 -
6 files changed, 6 deletions(-)
diff --git a/libcxx/include/new b/libcxx/include/new
index 0a97c3e37add574..67cc6a2d89a9a50 100644
--- a/libcxx/include/new
+++ b/libcxx/include/new
@@ -370,7 +370,6 @@ inline constexpr size_t hardware_constructive_interference_size = __GCC_CONSTRUC
_LIBCPP_END_NAMESPACE_STD
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
-# include <exception>
# include <type_traits>
#endif
diff --git a/libcxx/test/libcxx/transitive_includes/cxx03.csv b/libcxx/test/libcxx/transitive_includes/cxx03.csv
index ff564ffee5a325f..5b2e63155ce37dd 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx03.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx03.csv
@@ -575,7 +575,6 @@ mutex typeinfo
mutex version
new cstddef
new cstdlib
-new exception
new type_traits
new version
numbers concepts
diff --git a/libcxx/test/libcxx/transitive_includes/cxx11.csv b/libcxx/test/libcxx/transitive_includes/cxx11.csv
index 1f3bd5bc750fc87..f1fa73c754e265c 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx11.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx11.csv
@@ -580,7 +580,6 @@ mutex typeinfo
mutex version
new cstddef
new cstdlib
-new exception
new type_traits
new version
numbers concepts
diff --git a/libcxx/test/libcxx/transitive_includes/cxx14.csv b/libcxx/test/libcxx/transitive_includes/cxx14.csv
index 5d90b1da299e431..0af1e130bd19dd3 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx14.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx14.csv
@@ -582,7 +582,6 @@ mutex typeinfo
mutex version
new cstddef
new cstdlib
-new exception
new type_traits
new version
numbers concepts
diff --git a/libcxx/test/libcxx/transitive_includes/cxx17.csv b/libcxx/test/libcxx/transitive_includes/cxx17.csv
index 5d90b1da299e431..0af1e130bd19dd3 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx17.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx17.csv
@@ -582,7 +582,6 @@ mutex typeinfo
mutex version
new cstddef
new cstdlib
-new exception
new type_traits
new version
numbers concepts
diff --git a/libcxx/test/libcxx/transitive_includes/cxx20.csv b/libcxx/test/libcxx/transitive_includes/cxx20.csv
index 7c8cd552cff1c37..914d3829c6d4b0e 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx20.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx20.csv
@@ -587,7 +587,6 @@ mutex typeinfo
mutex version
new cstddef
new cstdlib
-new exception
new type_traits
new version
numbers concepts
>From c902549037a24aced854fde9adefa764e6f3d7c8 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 21 Oct 2023 06:14:06 +0300
Subject: [PATCH 43/47] oops
---
libcxx/src/support/runtime/exception_pointer_cxxabi.ipp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index dedb5293c188863..bdfda2a47d46f59 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -54,7 +54,7 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
# if !defined(_LIBCPP_HAS_NO_RTTI)
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
- if (__cxa_init_primary_exception != nullptr) {
+ if (__cxa_init_primary_exception) {
void *__ex = __cxa_allocate_exception(size);
(void)__cxa_init_primary_exception(__ex, tinfo, dest);
return __ex;
>From 0a8a846212b6e2455a2122b2a2f41a78ea6b1b02 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 21 Oct 2023 06:33:42 +0300
Subject: [PATCH 44/47] oops[2]
---
libcxx/src/support/runtime/exception_pointer_cxxabi.ipp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index bdfda2a47d46f59..beac03f7d45a6a7 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -54,7 +54,7 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
# if !defined(_LIBCPP_HAS_NO_RTTI)
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
- if (__cxa_init_primary_exception) {
+ if (&__cxa_init_primary_exception != nullptr) {
void *__ex = __cxa_allocate_exception(size);
(void)__cxa_init_primary_exception(__ex, tinfo, dest);
return __ex;
>From e94322376248569efc5f785e0bc401fe1308ba84 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 21 Oct 2023 06:58:17 +0300
Subject: [PATCH 45/47] fixing gcc errors hopefully
---
libcxx/src/support/runtime/exception_pointer_cxxabi.ipp | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index beac03f7d45a6a7..c95d1861ddec0e4 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -54,9 +54,10 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
# if !defined(_LIBCPP_HAS_NO_RTTI)
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
- if (&__cxa_init_primary_exception != nullptr) {
+ __cxa_exception *(*cxa_init_primary_exception_fn)(void *, std::type_info *, void(*)(void*)) = __cxa_init_primary_exception;
+ if (cxa_init_primary_exception_fn != nullptr) {
void *__ex = __cxa_allocate_exception(size);
- (void)__cxa_init_primary_exception(__ex, tinfo, dest);
+ (void)cxa_init_primary_exception_fn(__ex, tinfo, dest);
return __ex;
}
else {
>From bc33f504fde3ccb0aa6137b09814a12dddccf77f Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 21 Oct 2023 08:26:26 +0300
Subject: [PATCH 46/47] fix windows build, add fix powerpc abilists
---
...powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist | 1 +
...werpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist | 1 +
libcxx/src/support/runtime/exception_pointer_cxxabi.ipp | 2 +-
3 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
index a7145024d95e221..6fb06a77ab112c0 100644
--- a/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -1113,6 +1113,7 @@
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_acquire', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_release', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_increment_exception_refcount', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_init_primary_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_pure_virtual', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_rethrow', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_rethrow_primary_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
index 09a1d45ef897010..0dcc370f7d81e66 100644
--- a/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -1113,6 +1113,7 @@
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_acquire', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_release', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_increment_exception_refcount', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_init_primary_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_pure_virtual', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_rethrow', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_rethrow_primary_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index c95d1861ddec0e4..92485353142f755 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -22,7 +22,7 @@ extern "C" {
}
#else
extern "C" {
- __attribute__((weak)) __cxa_exception *__cxa_init_primary_exception(void *, std::type_info *, void(*)(void*)) throw();
+ __attribute__((weak)) __cxa_exception *__cxa_init_primary_exception(void *, std::type_info *, void(_LIBCXXABI_DTOR_FUNC*)(void*)) throw();
}
#endif
>From df7a4dcb5a38168f59ed6cf1eebe53e108d85820 Mon Sep 17 00:00:00 2001
From: Ivan Trofimov <i.trofimow at yandex.ru>
Date: Sat, 21 Oct 2023 09:15:48 +0300
Subject: [PATCH 47/47] fix mingw build once again
---
libcxx/src/support/runtime/exception_pointer_cxxabi.ipp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
index 92485353142f755..e06b4b7f83245bb 100644
--- a/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+++ b/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -54,7 +54,7 @@ exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
# if !defined(_LIBCPP_HAS_NO_RTTI)
void *exception_ptr::__init_native_exception(size_t size, type_info *tinfo, void (*dest)(void *)) noexcept
{
- __cxa_exception *(*cxa_init_primary_exception_fn)(void *, std::type_info *, void(*)(void*)) = __cxa_init_primary_exception;
+ __cxa_exception *(*cxa_init_primary_exception_fn)(void *, std::type_info *, void(_LIBCXXABI_DTOR_FUNC*)(void*)) = __cxa_init_primary_exception;
if (cxa_init_primary_exception_fn != nullptr) {
void *__ex = __cxa_allocate_exception(size);
(void)cxa_init_primary_exception_fn(__ex, tinfo, dest);
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