cac7821438
`std::aligned_storage` is deprecated with C++23, see [here](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p1413r3.pdf). This replaces the usages of `std::aligned_storage` within compiler-rt with an aligned `std::byte` array. I will provide patches for other subcomponents as well.
34 lines
961 B
C++
34 lines
961 B
C++
// RUN: %clangxx_tsan -O1 --std=c++17 %s -o %t && %run %t 2>&1 | FileCheck %s
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#include "custom_mutex.h"
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#include <cstddef>
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// Test that the destruction events of a mutex are ignored when the
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// annotations request this.
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//
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// Use after destruction is UB, but __tsan_mutex_linker_init and
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// __tsan_mutex_not_static exist to support global variables of mutex type,
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// which might be accessed during program shutdown after the class's destructor
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// has run.
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int main() {
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alignas(Mutex) std::byte mu1_store[sizeof(Mutex)];
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Mutex* mu1 = reinterpret_cast<Mutex*>(&mu1_store);
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new(&mu1_store) Mutex(false, __tsan_mutex_linker_init);
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mu1->Lock();
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mu1->~Mutex();
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mu1->Unlock();
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alignas(Mutex) std::byte mu2_store[sizeof(Mutex)];
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Mutex* mu2 = reinterpret_cast<Mutex*>(&mu2_store);
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new(&mu2_store) Mutex(false, 0, __tsan_mutex_not_static);
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mu2->Lock();
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mu2->~Mutex();
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mu2->Unlock();
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fprintf(stderr, "DONE\n");
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return 0;
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}
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// CHECK: DONE
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