[compiler-rt] a34159f - [TSan][Apple] Fix interceptor build error (#124351)
via llvm-commits
llvm-commits at lists.llvm.org
Mon Jan 27 15:48:32 PST 2025
Author: Julian Lettner
Date: 2025-01-27T15:48:29-08:00
New Revision: a34159f85ee01c197cc9d938bd1fc40c4c7dba51
URL: https://github.com/llvm/llvm-project/commit/a34159f85ee01c197cc9d938bd1fc40c4c7dba51
DIFF: https://github.com/llvm/llvm-project/commit/a34159f85ee01c197cc9d938bd1fc40c4c7dba51.diff
LOG: [TSan][Apple] Fix interceptor build error (#124351)
In certain cases, the SDK headers declare
`OSSpinLock*` APIs as macros (instead of
functions), so users can be transparently
forwarded to non-deprecated APIs.
When enabled, building of TSan interceptors failed
because these macros interfere with the
interceptor machinery, i.e., they prevent proper
forward declaration of intercepted APIs.
In a previous change [1], we misattributed this to
the deprecation of `OSSpinLock*` APIs.
[1] ae484c21c05668f84b13304c28bc39f753e493de
rdar://143193907
Added:
Modified:
compiler-rt/lib/tsan/rtl/tsan_interceptors_mac.cpp
Removed:
compiler-rt/lib/tsan/rtl/tsan_spinlock_defs_mac.h
################################################################################
diff --git a/compiler-rt/lib/tsan/rtl/tsan_interceptors_mac.cpp b/compiler-rt/lib/tsan/rtl/tsan_interceptors_mac.cpp
index e0e4c5b9d36cd3..978664411fff40 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_interceptors_mac.cpp
+++ b/compiler-rt/lib/tsan/rtl/tsan_interceptors_mac.cpp
@@ -25,7 +25,6 @@
# include "tsan_interceptors.h"
# include "tsan_interface.h"
# include "tsan_interface_ann.h"
-# include "tsan_spinlock_defs_mac.h"
# if defined(__has_include) && __has_include(<xpc/xpc.h>)
# include <xpc/xpc.h>
@@ -96,8 +95,7 @@ static constexpr morder kMacFailureOrder = mo_relaxed;
m_orig(int32_t, uint32_t, a32, f##32##OrigBarrier, \
__tsan_atomic32_##tsan_atomic_f, kMacOrderBarrier)
-# pragma clang diagnostic push
-// OSAtomic* functions are deprecated.
+# pragma clang diagnostic push // OSAtomic* deprecation
# pragma clang diagnostic ignored "-Wdeprecated-declarations"
OSATOMIC_INTERCEPTORS_ARITHMETIC(OSAtomicAdd, fetch_add,
OSATOMIC_INTERCEPTOR_PLUS_X)
@@ -111,6 +109,7 @@ OSATOMIC_INTERCEPTORS_BITWISE(OSAtomicAnd, fetch_and,
OSATOMIC_INTERCEPTOR_PLUS_X, OSATOMIC_INTERCEPTOR)
OSATOMIC_INTERCEPTORS_BITWISE(OSAtomicXor, fetch_xor,
OSATOMIC_INTERCEPTOR_PLUS_X, OSATOMIC_INTERCEPTOR)
+# pragma clang diagnostic pop // OSAtomic* deprecation
# define OSATOMIC_INTERCEPTORS_CAS(f, tsan_atomic_f, tsan_t, t) \
TSAN_INTERCEPTOR(bool, f, t old_value, t new_value, t volatile *ptr) { \
@@ -128,8 +127,7 @@ OSATOMIC_INTERCEPTORS_BITWISE(OSAtomicXor, fetch_xor,
kMacOrderBarrier, kMacFailureOrder); \
}
-# pragma clang diagnostic push
-// OSAtomicCompareAndSwap* functions are deprecated.
+# pragma clang diagnostic push // OSAtomicCompareAndSwap* deprecation
# pragma clang diagnostic ignored "-Wdeprecated-declarations"
OSATOMIC_INTERCEPTORS_CAS(OSAtomicCompareAndSwapInt, __tsan_atomic32, a32, int)
OSATOMIC_INTERCEPTORS_CAS(OSAtomicCompareAndSwapLong, __tsan_atomic64, a64,
@@ -140,7 +138,7 @@ OSATOMIC_INTERCEPTORS_CAS(OSAtomicCompareAndSwap32, __tsan_atomic32, a32,
int32_t)
OSATOMIC_INTERCEPTORS_CAS(OSAtomicCompareAndSwap64, __tsan_atomic64, a64,
int64_t)
-# pragma clang diagnostic pop
+# pragma clang diagnostic pop // OSAtomicCompareAndSwap* deprecation
# define OSATOMIC_INTERCEPTOR_BITOP(f, op, clear, mo) \
TSAN_INTERCEPTOR(bool, f, uint32_t n, volatile void *ptr) { \
@@ -156,9 +154,12 @@ OSATOMIC_INTERCEPTORS_CAS(OSAtomicCompareAndSwap64, __tsan_atomic64, a64,
OSATOMIC_INTERCEPTOR_BITOP(f, op, clear, kMacOrderNonBarrier) \
OSATOMIC_INTERCEPTOR_BITOP(f##Barrier, op, clear, kMacOrderBarrier)
+# pragma clang diagnostic push // OSAtomicTestAnd* deprecation
+# pragma clang diagnostic ignored "-Wdeprecated-declarations"
OSATOMIC_INTERCEPTORS_BITOP(OSAtomicTestAndSet, __tsan_atomic8_fetch_or, false)
OSATOMIC_INTERCEPTORS_BITOP(OSAtomicTestAndClear, __tsan_atomic8_fetch_and,
true)
+# pragma clang diagnostic pop // OSAtomicTestAnd* deprecation
TSAN_INTERCEPTOR(void, OSAtomicEnqueue, OSQueueHead *list, void *item,
size_t offset) {
@@ -196,6 +197,16 @@ TSAN_INTERCEPTOR(void *, OSAtomicFifoDequeue, OSFifoQueueHead *list,
# endif
+// If `OSSPINLOCK_USE_INLINED=1` is set, then SDK headers don't declare these
+// as functions, but macros that call non-deprecated APIs. Undefine these
+// macros so they don't interfere with the interceptor machinery.
+# undef OSSpinLockLock
+# undef OSSpinLockTry
+# undef OSSpinLockUnlock
+
+# pragma clang diagnostic push // OSSpinLock* deprecation
+# pragma clang diagnostic ignored "-Wdeprecated-declarations"
+
TSAN_INTERCEPTOR(void, OSSpinLockLock, volatile OSSpinLock *lock) {
CHECK(!cur_thread()->is_dead);
if (!cur_thread()->is_inited) {
@@ -227,6 +238,7 @@ TSAN_INTERCEPTOR(void, OSSpinLockUnlock, volatile OSSpinLock *lock) {
Release(thr, pc, (uptr)lock);
REAL(OSSpinLockUnlock)(lock);
}
+# pragma clang diagnostic pop // OSSpinLock* deprecation
TSAN_INTERCEPTOR(void, os_lock_lock, void *lock) {
CHECK(!cur_thread()->is_dead);
diff --git a/compiler-rt/lib/tsan/rtl/tsan_spinlock_defs_mac.h b/compiler-rt/lib/tsan/rtl/tsan_spinlock_defs_mac.h
deleted file mode 100644
index 1a99a81c030230..00000000000000
--- a/compiler-rt/lib/tsan/rtl/tsan_spinlock_defs_mac.h
+++ /dev/null
@@ -1,45 +0,0 @@
-//===-- tsan_spinlock_defs_mac.h -------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-//
-// This file is a part of ThreadSanitizer (TSan), a race detector.
-//
-// Mac-specific forward-declared function defintions that may be
-// deprecated in later versions of the OS.
-// These are needed for interceptors.
-//
-//===----------------------------------------------------------------------===//
-
-#if SANITIZER_APPLE
-
-#ifndef TSAN_SPINLOCK_DEFS_MAC_H
-#define TSAN_SPINLOCK_DEFS_MAC_H
-
-#include <stdint.h>
-
-extern "C" {
-
-/*
-Provides forward declarations related to OSSpinLocks on Darwin. These functions are
-deprecated on macOS version 10.12 and later,
-and are no longer included in the system headers.
-
-However, the symbols are still available on the system, so we provide these forward
-declarations to prevent compilation errors in tsan_interceptors_mac.cpp, which
-references these functions when defining TSAN interceptor functions.
-*/
-
-typedef int32_t OSSpinLock;
-
-void OSSpinLockLock(volatile OSSpinLock *__lock);
-void OSSpinLockUnlock(volatile OSSpinLock *__lock);
-bool OSSpinLockTry(volatile OSSpinLock *__lock);
-
-}
-
-#endif //TSAN_SPINLOCK_DEFS_MAC_H
-#endif // SANITIZER_APPLE
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