[clang] [clang] Support `__is_trivially_copyable(int()&)==false` (PR #81298)
Amirreza Ashouri via cfe-commits
cfe-commits at lists.llvm.org
Mon Mar 4 04:49:33 PST 2024
https://github.com/AMP999 updated https://github.com/llvm/llvm-project/pull/81298
>From d59c262b31937fdd2b907ec11d7f08e4a385007c Mon Sep 17 00:00:00 2001
From: Amirreza Ashouri <ar.ashouri999 at gmail.com>
Date: Fri, 9 Feb 2024 21:55:03 +0330
Subject: [PATCH 1/6] [clang] Support `__is_trivially_copyable(int()&)==false`
IMHO it would be productive to make a similar change for `typeid`,
in `ParseCXXTypeid`, in order to improve Clang's error message for
https://godbolt.org/z/oKKWxeYra
But that might be better done by adding a new DeclaratorContext
specifically for TypeidArg, instead of pretending that the argument
to `typeid` is a template argument, because I don't know what else
that change might affect.
Fixes https://github.com/llvm/llvm-project/issues/77585
---
clang/lib/Parse/ParseExprCXX.cpp | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/clang/lib/Parse/ParseExprCXX.cpp b/clang/lib/Parse/ParseExprCXX.cpp
index fd262ff31e661a..746a8b2286ac4c 100644
--- a/clang/lib/Parse/ParseExprCXX.cpp
+++ b/clang/lib/Parse/ParseExprCXX.cpp
@@ -3899,7 +3899,9 @@ ExprResult Parser::ParseTypeTrait() {
SmallVector<ParsedType, 2> Args;
do {
// Parse the next type.
- TypeResult Ty = ParseTypeName();
+ TypeResult Ty = ParseTypeName(nullptr, getLangOpts().CPlusPlus
+ ? DeclaratorContext::TemplateArg
+ : DeclaratorContext::TypeName);
if (Ty.isInvalid()) {
Parens.skipToEnd();
return ExprError();
@@ -3941,7 +3943,7 @@ ExprResult Parser::ParseArrayTypeTrait() {
if (T.expectAndConsume())
return ExprError();
- TypeResult Ty = ParseTypeName();
+ TypeResult Ty = ParseTypeName(nullptr, DeclaratorContext::TemplateArg);
if (Ty.isInvalid()) {
SkipUntil(tok::comma, StopAtSemi);
SkipUntil(tok::r_paren, StopAtSemi);
>From 4c58f4f351a17cf4bf3c9d0ccfa118d0fe3a52de Mon Sep 17 00:00:00 2001
From: Amirreza Ashouri <ar.ashouri999 at gmail.com>
Date: Sun, 11 Feb 2024 20:35:04 +0330
Subject: [PATCH 2/6] [clang] Fix the failing test in #81298
---
clang/test/Sema/static-assert.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/clang/test/Sema/static-assert.c b/clang/test/Sema/static-assert.c
index 4e9e6b7ee558bd..7e1ce135cbd995 100644
--- a/clang/test/Sema/static-assert.c
+++ b/clang/test/Sema/static-assert.c
@@ -57,7 +57,7 @@ UNION(char[2], short) u2 = { .one = { 'a', 'b' } }; // ext-warning 3 {{'_Static_
typedef UNION(char, short) U3; // expected-error {{static assertion failed due to requirement 'sizeof(char) == sizeof(short)': type size mismatch}} \
// expected-note{{evaluates to '1 == 2'}} \
// ext-warning 3 {{'_Static_assert' is a C11 extension}}
-typedef UNION(float, 0.5f) U4; // expected-error {{expected a type}} \
+typedef UNION(float, 0.5f) U4; // expected-error-re {{{{type name requires a specifier or qualifier|expected a type}}}} \
// ext-warning 3 {{'_Static_assert' is a C11 extension}}
// After defining the assert macro in MS-compatibility mode, we should
>From 03c2cfb73fc291ecfc5318077b295a6e38cd9869 Mon Sep 17 00:00:00 2001
From: Amirreza Ashouri <ar.ashouri999 at gmail.com>
Date: Mon, 12 Feb 2024 23:47:33 +0330
Subject: [PATCH 3/6] Add a release note.
---
clang/docs/ReleaseNotes.rst | 2 ++
1 file changed, 2 insertions(+)
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 32440ee64e3ebe..0beb10af709804 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -217,6 +217,8 @@ Bug Fixes to C++ Support
Fixes (`#80971 ICE when explicit object parameter be a function parameter pack`)
- Fixed a bug where abbreviated function templates would append their invented template parameters to
an empty template parameter lists.
+- Fix parsing of abominable function types inside type traits.
+ Fixes (`#77585 <https://github.com/llvm/llvm-project/issues/77585>`_)
Bug Fixes to AST Handling
^^^^^^^^^^^^^^^^^^^^^^^^^
>From 0de0aa09fb5f45fcde688d988377582b9257b6b8 Mon Sep 17 00:00:00 2001
From: Amirreza Ashouri <ar.ashouri999 at gmail.com>
Date: Tue, 13 Feb 2024 01:19:27 +0330
Subject: [PATCH 4/6] Remove trailing white space in ReleaseNotes.rst.
---
clang/docs/ReleaseNotes.rst | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 0beb10af709804..55f3faea365a07 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -217,7 +217,7 @@ Bug Fixes to C++ Support
Fixes (`#80971 ICE when explicit object parameter be a function parameter pack`)
- Fixed a bug where abbreviated function templates would append their invented template parameters to
an empty template parameter lists.
-- Fix parsing of abominable function types inside type traits.
+- Fix parsing of abominable function types inside type traits.
Fixes (`#77585 <https://github.com/llvm/llvm-project/issues/77585>`_)
Bug Fixes to AST Handling
>From 8c92b1e803b213dbe037e5b38951a05794fd677c Mon Sep 17 00:00:00 2001
From: Amirreza Ashouri <ar.ashouri999 at gmail.com>
Date: Tue, 20 Feb 2024 15:19:04 +0330
Subject: [PATCH 5/6] Make C mode and C++ mode tests separated.
---
clang/test/Sema/static-assert.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/clang/test/Sema/static-assert.c b/clang/test/Sema/static-assert.c
index 7e1ce135cbd995..ae5e8076e0beda 100644
--- a/clang/test/Sema/static-assert.c
+++ b/clang/test/Sema/static-assert.c
@@ -1,6 +1,6 @@
-// RUN: %clang_cc1 -std=c11 -Wgnu-folding-constant -fsyntax-only -verify %s
-// RUN: %clang_cc1 -fms-compatibility -Wgnu-folding-constant -DMS -fsyntax-only -verify=expected,ms %s
-// RUN: %clang_cc1 -std=c99 -pedantic -Wgnu-folding-constant -fsyntax-only -verify=expected,ext %s
+// RUN: %clang_cc1 -std=c11 -Wgnu-folding-constant -fsyntax-only -verify=expected,c %s
+// RUN: %clang_cc1 -fms-compatibility -Wgnu-folding-constant -DMS -fsyntax-only -verify=expected,ms,c %s
+// RUN: %clang_cc1 -std=c99 -pedantic -Wgnu-folding-constant -fsyntax-only -verify=expected,ext,c %s
// RUN: %clang_cc1 -xc++ -std=c++11 -pedantic -fsyntax-only -verify=expected,ext,cxx %s
_Static_assert("foo", "string is nonzero"); // ext-warning {{'_Static_assert' is a C11 extension}}
@@ -57,7 +57,8 @@ UNION(char[2], short) u2 = { .one = { 'a', 'b' } }; // ext-warning 3 {{'_Static_
typedef UNION(char, short) U3; // expected-error {{static assertion failed due to requirement 'sizeof(char) == sizeof(short)': type size mismatch}} \
// expected-note{{evaluates to '1 == 2'}} \
// ext-warning 3 {{'_Static_assert' is a C11 extension}}
-typedef UNION(float, 0.5f) U4; // expected-error-re {{{{type name requires a specifier or qualifier|expected a type}}}} \
+typedef UNION(float, 0.5f) U4; // c-error {{expected a type}} \
+ // cxx-error {{type name requires a specifier or qualifier}} \
// ext-warning 3 {{'_Static_assert' is a C11 extension}}
// After defining the assert macro in MS-compatibility mode, we should
>From eb4aaad30fcae96c1a167705755c6dce57f662c4 Mon Sep 17 00:00:00 2001
From: Amirreza Ashouri <ar.ashouri999 at gmail.com>
Date: Mon, 4 Mar 2024 16:17:26 +0330
Subject: [PATCH 6/6] [Clang]Add new test cases to
`clang/test/SemaCXX/type-traits-nonobject.cpp`
---
clang/test/SemaCXX/type-traits-nonobject.cpp | 3 +++
1 file changed, 3 insertions(+)
diff --git a/clang/test/SemaCXX/type-traits-nonobject.cpp b/clang/test/SemaCXX/type-traits-nonobject.cpp
index c9e3c30e5533d4..52661c303215f4 100644
--- a/clang/test/SemaCXX/type-traits-nonobject.cpp
+++ b/clang/test/SemaCXX/type-traits-nonobject.cpp
@@ -6,11 +6,14 @@
static_assert(!__is_pod(void), "");
static_assert(!__is_pod(int&), "");
static_assert(!__is_pod(int()), "");
+static_assert(!__is_pod(int()&), "");
static_assert(!__is_trivially_copyable(void), "");
static_assert(!__is_trivially_copyable(int&), "");
static_assert(!__is_trivially_copyable(int()), "");
+static_assert(!__is_trivially_copyable(int()&), "");
static_assert(!__is_trivially_relocatable(void), "");
static_assert(!__is_trivially_relocatable(int&), "");
static_assert(!__is_trivially_relocatable(int()), "");
+static_assert(!__is_trivially_relocatable(int()&), "");
\ No newline at end of file
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