diff options
Diffstat (limited to 'test/tsan')
-rw-r--r-- | test/tsan/Darwin/ignore-noninstrumented.mm | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/test/tsan/Darwin/ignore-noninstrumented.mm b/test/tsan/Darwin/ignore-noninstrumented.mm new file mode 100644 index 000000000..5e4453102 --- /dev/null +++ b/test/tsan/Darwin/ignore-noninstrumented.mm @@ -0,0 +1,53 @@ +// Check that ignore_noninstrumented_modules=1 supresses races from system libraries on OS X. + +// RUN: %clang_tsan %s -o %t -framework Foundation + +// Check that without the flag, there are false positives. +// RUN: %deflake %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-RACE + +// With ignore_noninstrumented_modules=1, no races are reported. +// RUN: %env_tsan_opts=ignore_noninstrumented_modules=1 %run %t 2>&1 | FileCheck %s + +// With ignore_noninstrumented_modules=1, races in user's code are still reported. +// RUN: %env_tsan_opts=ignore_noninstrumented_modules=1 %deflake %run %t race 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-RACE + +#import <Foundation/Foundation.h> + +#import "../test.h" + +char global_buf[64]; + +void *Thread1(void *x) { + barrier_wait(&barrier); + strcpy(global_buf, "hello world"); + return NULL; +} + +void *Thread2(void *x) { + strcpy(global_buf, "world hello"); + barrier_wait(&barrier); + return NULL; +} + +int main(int argc, char *argv[]) { + fprintf(stderr, "Hello world.\n"); + + // NSUserDefaults uses XPC which triggers the false positive. + NSDictionary *d = [[NSUserDefaults standardUserDefaults] dictionaryRepresentation]; + fprintf(stderr, "d = %p\n", d); + + if (argc > 1 && strcmp(argv[1], "race") == 0) { + barrier_init(&barrier, 2); + 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); + } + + fprintf(stderr, "Done.\n"); +} + +// CHECK: Hello world. +// CHECK-RACE: SUMMARY: ThreadSanitizer: data race +// CHECK: Done. |