diff options
Diffstat (limited to 'lib/tsan/lit_tests/fd_close_norace.cc')
-rw-r--r-- | lib/tsan/lit_tests/fd_close_norace.cc | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/fd_close_norace.cc b/lib/tsan/lit_tests/fd_close_norace.cc new file mode 100644 index 000000000000..a8b1a6d7b9e2 --- /dev/null +++ b/lib/tsan/lit_tests/fd_close_norace.cc @@ -0,0 +1,33 @@ +// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s +#include <pthread.h> +#include <stdio.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +void *Thread1(void *x) { + int f = open("/dev/random", O_RDONLY); + close(f); + return NULL; +} + +void *Thread2(void *x) { + sleep(1); + int f = open("/dev/random", O_RDONLY); + close(f); + return NULL; +} + +int main() { + pthread_t t[2]; + pthread_create(&t[0], NULL, Thread1, NULL); + pthread_create(&t[1], NULL, Thread2, NULL); + pthread_join(t[0], NULL); + pthread_join(t[1], NULL); + printf("OK\n"); +} + +// CHECK-NOT: WARNING: ThreadSanitizer: data race + + |