Index: compiler-rt/trunk/test/tsan/fork_atexit.cc
===================================================================
--- compiler-rt/trunk/test/tsan/fork_atexit.cc
+++ compiler-rt/trunk/test/tsan/fork_atexit.cc
@@ -1,4 +1,5 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && TSAN_OPTIONS="atexit_sleep_ms=50" %run %t 2>&1 | FileCheck %s
+// UNSUPPORTED: darwin
 #include <pthread.h>
 #include <stdio.h>
 #include <stdlib.h>
Index: compiler-rt/trunk/test/tsan/fork_deadlock.cc
===================================================================
--- compiler-rt/trunk/test/tsan/fork_deadlock.cc
+++ compiler-rt/trunk/test/tsan/fork_deadlock.cc
@@ -1,4 +1,5 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && TSAN_OPTIONS="atexit_sleep_ms=50" %run %t 2>&1 | FileCheck %s
+// UNSUPPORTED: darwin
 #include "test.h"
 #include <errno.h>
 #include <sys/types.h>
Index: compiler-rt/trunk/test/tsan/fork_multithreaded.cc
===================================================================
--- compiler-rt/trunk/test/tsan/fork_multithreaded.cc
+++ compiler-rt/trunk/test/tsan/fork_multithreaded.cc
@@ -1,5 +1,6 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s -check-prefix=CHECK-DIE
 // RUN: %clangxx_tsan -O1 %s -o %t && TSAN_OPTIONS="die_after_fork=0" %run %t 2>&1 | FileCheck %s -check-prefix=CHECK-NODIE
+// UNSUPPORTED: darwin
 #include "test.h"
 #include <errno.h>
 #include <sys/types.h>
Index: compiler-rt/trunk/test/tsan/fork_multithreaded3.cc
===================================================================
--- compiler-rt/trunk/test/tsan/fork_multithreaded3.cc
+++ compiler-rt/trunk/test/tsan/fork_multithreaded3.cc
@@ -1,4 +1,5 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+// UNSUPPORTED: darwin
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>
Index: compiler-rt/trunk/test/tsan/signal_reset.cc
===================================================================
--- compiler-rt/trunk/test/tsan/signal_reset.cc
+++ compiler-rt/trunk/test/tsan/signal_reset.cc
@@ -1,4 +1,5 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+// UNSUPPORTED: darwin
 #include <pthread.h>
 #include <stdio.h>
 #include <stdlib.h>
Index: compiler-rt/trunk/test/tsan/signal_sync.cc
===================================================================
--- compiler-rt/trunk/test/tsan/signal_sync.cc
+++ compiler-rt/trunk/test/tsan/signal_sync.cc
@@ -1,4 +1,5 @@
 // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+// UNSUPPORTED: darwin
 #include "test.h"
 #include <signal.h>
 #include <sys/types.h>
Index: compiler-rt/trunk/test/tsan/signal_thread.cc
===================================================================
--- compiler-rt/trunk/test/tsan/signal_thread.cc
+++ compiler-rt/trunk/test/tsan/signal_thread.cc
@@ -1,4 +1,5 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+// UNSUPPORTED: darwin
 #include <pthread.h>
 #include <stdio.h>
 #include <stdlib.h>
Index: compiler-rt/trunk/test/tsan/vfork.cc
===================================================================
--- compiler-rt/trunk/test/tsan/vfork.cc
+++ compiler-rt/trunk/test/tsan/vfork.cc
@@ -1,4 +1,5 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+// UNSUPPORTED: darwin
 #include <pthread.h>
 #include <stdio.h>
 #include <stdlib.h>