| Index: runtime/vm/thread_interrupter_linux.cc | 
| diff --git a/runtime/vm/thread_interrupter_linux.cc b/runtime/vm/thread_interrupter_linux.cc | 
| index 5ff3c92f5cc324563188592425fcf71a3ab55ef9..5b275c237bbd41509ecca03c72f9fd82f352ad0a 100644 | 
| --- a/runtime/vm/thread_interrupter_linux.cc | 
| +++ b/runtime/vm/thread_interrupter_linux.cc | 
| @@ -48,7 +48,8 @@ void ThreadInterrupter::InterruptThread(InterruptableThreadState* state) { | 
| OS::Print("ThreadInterrupter interrupting %p\n", | 
| reinterpret_cast<void*>(state->id)); | 
| } | 
| -  pthread_kill(state->id, SIGPROF); | 
| +  int result = pthread_kill(state->id, SIGPROF); | 
| +  ASSERT(result == 0); | 
| } | 
|  | 
|  | 
|  |