diff options
Diffstat (limited to 'lib/tsan/lit_tests/race_with_finished_thread.cc')
-rw-r--r-- | lib/tsan/lit_tests/race_with_finished_thread.cc | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/race_with_finished_thread.cc b/lib/tsan/lit_tests/race_with_finished_thread.cc new file mode 100644 index 000000000000..a267290e661e --- /dev/null +++ b/lib/tsan/lit_tests/race_with_finished_thread.cc @@ -0,0 +1,43 @@ +// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s +#include <pthread.h> +#include <stddef.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +// Ensure that we can restore a stack of a finished thread. + +int g_data; + +void __attribute__((noinline)) foobar(int *p) { + *p = 42; +} + +void *Thread1(void *x) { + foobar(&g_data); + return NULL; +} + +void *Thread2(void *x) { + sleep(1); + g_data = 43; + 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); + return 0; +} + +// CHECK: WARNING: ThreadSanitizer: data race +// CHECK: Write of size 4 at {{.*}} by thread T2: +// CHECK: Previous write of size 4 at {{.*}} by thread T1: +// CHECK: #0 foobar +// CHECK: #1 Thread1 +// CHECK: Thread T1 (tid={{.*}}, finished) created by main thread at: +// CHECK: #0 pthread_create +// CHECK: #1 main |