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TheRock/compiler/amd-llvm/compiler-rt/test/tsan/inlined_memcpy_race2.cpp
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2026-09-02 16:34:47 -07:00

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// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
#include "test.h"
#include <string.h>
int y[4], z[4];
void *MemMoveThread(void *a) {
memmove((int*)a, z, 16);
barrier_wait(&barrier);
return NULL;
}
void *MemSetThread(void *a) {
barrier_wait(&barrier);
memset((int*)a, 0, 16);
return NULL;
}
int main() {
barrier_init(&barrier, 2);
pthread_t t[2];
// Race on y between memmove and memset
pthread_create(&t[0], NULL, MemMoveThread, y);
pthread_create(&t[1], NULL, MemSetThread, y);
pthread_join(t[0], NULL);
pthread_join(t[1], NULL);
fprintf(stderr, "PASS\n");
return 0;
}
// CHECK: WARNING: ThreadSanitizer: data race
// CHECK: #0 {{.*}}memset
// CHECK: #{{[12]}} MemSetThread
// CHECK: Previous write
// CHECK: #0 {{.*mem(cpy|move)}}
// CHECK: #{{[12]}} MemMoveThread