diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/c-c++-common/tsan/write_in_reader_lock.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/c-c++-common/tsan/write_in_reader_lock.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/c-c++-common/tsan/write_in_reader_lock.c b/gcc-4.9/gcc/testsuite/c-c++-common/tsan/write_in_reader_lock.c new file mode 100644 index 000000000..898d23d50 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/c-c++-common/tsan/write_in_reader_lock.c @@ -0,0 +1,36 @@ +/* { dg-shouldfail "tsan" } */ + +#include <pthread.h> +#include <unistd.h> + +pthread_rwlock_t rwlock; +int GLOB; + +void *Thread1(void *p) { + (void)p; + pthread_rwlock_rdlock(&rwlock); + // Write under reader lock. + sleep(1); + GLOB++; + pthread_rwlock_unlock(&rwlock); + return 0; +} + +int main(int argc, char *argv[]) { + pthread_rwlock_init(&rwlock, NULL); + pthread_rwlock_rdlock(&rwlock); + pthread_t t; + pthread_create(&t, 0, Thread1, 0); + volatile int x = GLOB; + (void)x; + pthread_rwlock_unlock(&rwlock); + pthread_join(t, 0); + pthread_rwlock_destroy(&rwlock); + return 0; +} + +/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */ +/* { dg-output " Write of size 4 at 0x\[0-9a-f\]+ by thread T1.*:(\n|\r\n|\r).*" } */ +/* { dg-output " #0 Thread1.*\(write_in_reader_lock.c|\\?{2}\):\[0-9\]+ .*" } */ +/* { dg-output " Previous read of size 4 at.* by main thread.*:(\n|\r\n|\r).*" } */ +/* { dg-output " #0 main.*\(write_in_reader_lock.c|\\?{2}\):\[0-9\]+.*" } */ |