diff options
| -rw-r--r-- | compiler-rt/lib/tsan/lit_tests/inlined_memcpy_race.cc | 44 |
1 files changed, 36 insertions, 8 deletions
diff --git a/compiler-rt/lib/tsan/lit_tests/inlined_memcpy_race.cc b/compiler-rt/lib/tsan/lit_tests/inlined_memcpy_race.cc index 33dbf189616..6efe5a956e9 100644 --- a/compiler-rt/lib/tsan/lit_tests/inlined_memcpy_race.cc +++ b/compiler-rt/lib/tsan/lit_tests/inlined_memcpy_race.cc @@ -1,27 +1,55 @@ // RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s -// Currently, we don't report a race here: -// http://code.google.com/p/thread-sanitizer/issues/detail?id=16 #include <pthread.h> #include <stddef.h> #include <stdio.h> #include <string.h> #include <unistd.h> -int x[4], y[4]; +int x[4], y[4], z[4]; -void *Thread1(void *unused) { - memcpy(x, y, 16); +void *MemCpyThread(void *a) { + memcpy((int*)a, z, 16); + return NULL; +} + +void *MemMoveThread(void *a) { + memmove((int*)a, z, 16); + return NULL; +} + +void *MemSetThread(void *a) { + sleep(1); + memset((int*)a, 0, 16); return NULL; } int main() { pthread_t t[2]; - pthread_create(&t[0], NULL, Thread1, NULL); - pthread_create(&t[1], NULL, Thread1, NULL); + // Race on x between memcpy and memset + pthread_create(&t[0], NULL, MemCpyThread, x); + pthread_create(&t[1], NULL, MemSetThread, x); + pthread_join(t[0], NULL); + pthread_join(t[1], NULL); + // Race on y between memmove and memset + pthread_create(&t[0], NULL, MemMoveThread, y); + pthread_create(&t[1], NULL, MemSetThread, y); pthread_join(t[0], NULL); pthread_join(t[1], NULL); + printf("PASS\n"); return 0; } -// CHECK-NOT: ThreadSanitizer +// CHECK: WARNING: ThreadSanitizer: data race +// CHECK: #0 memset +// CHECK: #1 MemSetThread +// CHECK: Previous write +// CHECK: #0 memcpy +// CHECK: #1 MemCpyThread + +// CHECK: WARNING: ThreadSanitizer: data race +// CHECK: #0 memset +// CHECK: #1 MemSetThread +// CHECK: Previous write +// CHECK: #0 memmove +// CHECK: #1 MemMoveThread |
