Index: /trunk/src/libs/xpcom18a4/xpcom/base/nsExceptionService.cpp
===================================================================
--- /trunk/src/libs/xpcom18a4/xpcom/base/nsExceptionService.cpp	(revision 56584)
+++ /trunk/src/libs/xpcom18a4/xpcom/base/nsExceptionService.cpp	(revision 56585)
@@ -117,5 +117,5 @@
 // build. Since it is quite annoying, we use a special ReleaseQuiet() mehtod
 // in DoDropThread() to shut them up.
-NS_IMPL_ISUPPORTS1(nsExceptionManager, nsIExceptionManager)
+NS_IMPL_THREADSAFE_ISUPPORTS1(nsExceptionManager, nsIExceptionManager)
 
 nsExceptionManager::nsExceptionManager(nsExceptionService *svc) :