If we encounter a fatal error, exit with status 70.  For BSD systems this is
defined as an internal software error.  This notifies the driver to report
diagnostics information.
rdar://11951540


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167754 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/driver/cc1_main.cpp b/tools/driver/cc1_main.cpp
index 674f2ad..9da6723 100644
--- a/tools/driver/cc1_main.cpp
+++ b/tools/driver/cc1_main.cpp
@@ -48,8 +48,10 @@
   // particular that we remove files registered with RemoveFileOnSignal.
   llvm::sys::RunInterruptHandlers();
 
-  // We cannot recover from llvm errors.
-  exit(1);
+  // We cannot recover from llvm errors.  When reporting a fatal error, exit
+  // with status 70.  For BSD systems this is defined as an internal software
+  // error.  This notifies the driver to report diagnostics information.
+  exit(70);
 }
 
 int cc1_main(const char **ArgBegin, const char **ArgEnd,