Index: llvm/lib/Support/PrettyStackTrace.cpp
===================================================================
--- llvm/lib/Support/PrettyStackTrace.cpp
+++ llvm/lib/Support/PrettyStackTrace.cpp
@@ -144,6 +144,8 @@
 /// This callback is run if a fatal signal is delivered to the process, it
 /// prints the pretty stack trace.
 static void CrashHandler(void *) {
+  errs() << "PLEASE submit a bug report to " BUG_REPORT_URL
+            " and include the crash backtrace\n";
 #ifndef __APPLE__
   // On non-apple systems, just emit the crash stack trace to stderr.
   PrintCurStackTrace(errs());