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// RUN: %clangxx_tsan %s -o %t
// RUN: %deflake %run %t 2>&1 | FileCheck %s
#include <thread>
#import "../test.h"
void *tag;
__attribute__((no_sanitize("thread")))
void ExternalWrite(void *addr) {
__tsan_external_write(addr, __builtin_return_address(0), tag);
}
int main(int argc, char *argv[]) {
barrier_init(&barrier, 2);
tag = __tsan_external_register_tag("HelloWorld");
fprintf(stderr, "Start.\n");
// CHECK: Start.
for (int i = 0; i < 4; i++) {
void *opaque_object = malloc(16);
std::thread t1([opaque_object] {
ExternalWrite(opaque_object);
barrier_wait(&barrier);
});
std::thread t2([opaque_object] {
barrier_wait(&barrier);
ExternalWrite(opaque_object);
});
// CHECK: WARNING: ThreadSanitizer: race on HelloWorld
t1.join();
t2.join();
}
fprintf(stderr, "First phase done.\n");
// CHECK: First phase done.
for (int i = 0; i < 4; i++) {
void *opaque_object = malloc(16);
std::thread t1([opaque_object] {
ExternalWrite(opaque_object);
barrier_wait(&barrier);
});
std::thread t2([opaque_object] {
barrier_wait(&barrier);
ExternalWrite(opaque_object);
});
// CHECK: WARNING: ThreadSanitizer: race on HelloWorld
t1.join();
t2.join();
}
fprintf(stderr, "Second phase done.\n");
// CHECK: Second phase done.
}
// CHECK: ThreadSanitizer: reported 2 warnings
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