diff options
Diffstat (limited to 'lib/tsan/lit_tests/fd_pipe_race.cc')
-rw-r--r-- | lib/tsan/lit_tests/fd_pipe_race.cc | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/fd_pipe_race.cc b/lib/tsan/lit_tests/fd_pipe_race.cc new file mode 100644 index 000000000000..dfdb7795aae6 --- /dev/null +++ b/lib/tsan/lit_tests/fd_pipe_race.cc @@ -0,0 +1,37 @@ +// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s +#include <pthread.h> +#include <stdio.h> +#include <unistd.h> + +int fds[2]; + +void *Thread1(void *x) { + write(fds[1], "a", 1); + return NULL; +} + +void *Thread2(void *x) { + sleep(1); + close(fds[0]); + close(fds[1]); + 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); +} + +// CHECK: WARNING: ThreadSanitizer: data race +// CHECK: Write of size 8 +// CHECK: #0 close +// CHECK: #1 Thread2 +// CHECK: Previous read of size 8 +// CHECK: #0 write +// CHECK: #1 Thread1 + + |