Index: projects/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
===================================================================
--- projects/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc	(revision 186042)
+++ projects/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc	(working copy)
@@ -328,7 +328,7 @@
   tracer_thread_argument.mutex.Lock();
   pid_t tracer_pid = clone(TracerThread, tracer_stack.Bottom(),
                           CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_UNTRACED,
-                          &tracer_thread_argument, 0, 0, 0);
+                          &tracer_thread_argument);
   if (tracer_pid < 0) {
     Report("Failed spawning a tracer thread (errno %d).\n", errno);
     tracer_thread_argument.mutex.Unlock();