diff options
Diffstat (limited to 'test/tsan/Darwin/gcd-async-race.mm')
-rw-r--r-- | test/tsan/Darwin/gcd-async-race.mm | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/test/tsan/Darwin/gcd-async-race.mm b/test/tsan/Darwin/gcd-async-race.mm new file mode 100644 index 0000000000000..31163f972896c --- /dev/null +++ b/test/tsan/Darwin/gcd-async-race.mm @@ -0,0 +1,38 @@ +// RUN: %clang_tsan %s -o %t -framework Foundation +// RUN: %deflake %run %t 2>&1 + +#import <Foundation/Foundation.h> + +#import "../test.h" + +long global; + +int main() { + NSLog(@"Hello world."); + NSLog(@"addr=%p\n", &global); + barrier_init(&barrier, 2); + + global = 42; + dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ + global = 43; + barrier_wait(&barrier); + }); + + dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ + barrier_wait(&barrier); + global = 44; + + dispatch_sync(dispatch_get_main_queue(), ^{ + CFRunLoopStop(CFRunLoopGetCurrent()); + }); + }); + + CFRunLoopRun(); + NSLog(@"Done."); +} + +// CHECK: Hello world. +// CHECK: addr=[[ADDR:0x[0-9,a-f]+]] +// CHECK: WARNING: ThreadSanitizer: data race +// CHECK: Location is global 'global' at [[ADDR]] (global_race.cc.exe+0x{{[0-9,a-f]+}}) +// CHECK: Done. |