diff options
Diffstat (limited to 'lib/tsan/lit_tests/fd_pipe_norace.cc')
-rw-r--r-- | lib/tsan/lit_tests/fd_pipe_norace.cc | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/fd_pipe_norace.cc b/lib/tsan/lit_tests/fd_pipe_norace.cc new file mode 100644 index 000000000000..2da69ea21112 --- /dev/null +++ b/lib/tsan/lit_tests/fd_pipe_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> + +int fds[2]; +int X; + +void *Thread1(void *x) { + X = 42; + write(fds[1], "a", 1); + return NULL; +} + +void *Thread2(void *x) { + char buf; + while (read(fds[0], &buf, 1) != 1) { + } + X = 43; + return NULL; +} + +int main() { + pipe(fds); + 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 |