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// RUN: %clangxx_tsan %s -o %t
// RUN: %deflake %run %t 2>&1 | FileCheck %s
#include <thread>
#import "../test.h"
extern "C" {
void __tsan_write8(void *addr);
}
static void *tag = (void *)0x1;
__attribute__((no_sanitize("thread")))
void ExternalWrite(void *addr) {
__tsan_external_write(addr, nullptr, tag);
}
__attribute__((no_sanitize("thread")))
void RegularWrite(void *addr) {
__tsan_write8(addr);
}
int main(int argc, char *argv[]) {
barrier_init(&barrier, 2);
fprintf(stderr, "Start.\n");
// CHECK: Start.
{
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: Swift access race
// CHECK: Modifying access of Swift variable at {{.*}} by thread {{.*}}
// CHECK: Previous modifying access of Swift variable at {{.*}} by thread {{.*}}
// CHECK: SUMMARY: ThreadSanitizer: Swift access race
t1.join();
t2.join();
}
fprintf(stderr, "external+external test done.\n");
// CHECK: external+external test done.
{
void *opaque_object = malloc(16);
std::thread t1([opaque_object] {
ExternalWrite(opaque_object);
barrier_wait(&barrier);
});
std::thread t2([opaque_object] {
barrier_wait(&barrier);
RegularWrite(opaque_object);
});
// CHECK: WARNING: ThreadSanitizer: Swift access race
// CHECK: Write of size 8 at {{.*}} by thread {{.*}}
// CHECK: Previous modifying access of Swift variable at {{.*}} by thread {{.*}}
// CHECK: SUMMARY: ThreadSanitizer: Swift access race
t1.join();
t2.join();
}
fprintf(stderr, "external+regular test done.\n");
// CHECK: external+regular test done.
{
void *opaque_object = malloc(16);
std::thread t1([opaque_object] {
RegularWrite(opaque_object);
barrier_wait(&barrier);
});
std::thread t2([opaque_object] {
barrier_wait(&barrier);
ExternalWrite(opaque_object);
});
// CHECK: WARNING: ThreadSanitizer: Swift access race
// CHECK: Modifying access of Swift variable at {{.*}} by thread {{.*}}
// CHECK: Previous write of size 8 at {{.*}} by thread {{.*}}
// CHECK: SUMMARY: ThreadSanitizer: Swift access race
t1.join();
t2.join();
}
fprintf(stderr, "regular+external test done.\n");
// CHECK: regular+external test done.
}
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