llvm-project/compiler-rt/test/tsan/malloc_stack.cpp

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// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
#include "test.h"
_Atomic(int*) p;
void *thr(void *a) {
barrier_wait(&barrier);
int *pp = __c11_atomic_load(&p, __ATOMIC_RELAXED);
*pp = 42;
return 0;
}
int main() {
barrier_init(&barrier, 2);
pthread_t th;
pthread_create(&th, 0, thr, p);
__c11_atomic_store(&p, new int, __ATOMIC_RELAXED);
barrier_wait(&barrier);
pthread_join(th, 0);
}
// CHECK: data race
// CHECK: Previous write
// CHECK: #0 operator new
// CHECK: Location is heap block
// CHECK: #0 operator new