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libstdc++: Fix test_and_acquire for EABI

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libstdc++-v3/ChangeLog:

	* config/cpu/arm/cxxabi_tweaks.h (_GLIBCXX_GUARD_TEST_AND_ACQUIRE):
	Do not try to dereference return value of __atomic_load_n.
This commit is contained in:
Jonathan Wakely 2020-10-01 12:54:37 +01:00
parent f9c86e3105
commit 026ca1121c
1 changed files with 1 additions and 1 deletions
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libstdc++-v3/config/cpu/arm/cxxabi_tweaks.h
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@ -48,7 +48,7 @@ namespace __cxxabiv1
typedef int __guard;
#define _GLIBCXX_GUARD_TEST_AND_ACQUIRE(x) \
_GLIBCXX_GUARD_TEST(__atomic_load_n(x, __ATOMIC_ACQUIRE))
((__atomic_load_n(x, __ATOMIC_ACQUIRE) & 1) != 0)
#define _GLIBCXX_GUARD_SET_AND_RELEASE(x) \
__atomic_store_n(x, 1, __ATOMIC_RELEASE)