Circumvent a bug in older glibc

src/platform-linux.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 616 matching lines @@
   if (ts.tv_nsec >= kOneSecondNanos) {
     ts.tv_nsec -= kOneSecondNanos;
     ts.tv_nsec++;
   }
   ts.tv_sec += secs;
 
   // Wait for semaphore signalled or timeout.
   while (true) {
     int result = sem_timedwait(&sem_, &ts);
     if (result == 0) return true;  // Successfully got semaphore.
+    if (result > 0) {
+      // For glibc prior to 2.3.4 sem_timedwait returns the error instead of -1.
+      errno = result;
+      result = -1;
+    }
     if (result == -1 && errno == ETIMEDOUT) return false;  // Timeout.
     CHECK(result == -1 && errno == EINTR);  // Signal caused spurious wakeup.
   }
 }
 
 
 Semaphore* OS::CreateSemaphore(int count) {
   return new LinuxSemaphore(count);
 }
 
@@ skipping 242 matching lines @@
   }
 
   // This sampler is no longer the active sampler.
   active_sampler_ = NULL;
   active_ = false;
 }
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal