[cfe-commits] r162070 - /cfe/trunk/lib/Basic/Diagnostic.cpp

[Richard Smith]

Author: rsmith
Date: Thu Aug 16 19:55:32 2012
New Revision: 162070

URL: http://llvm.org/viewvc/llvm-project?rev=162070&view=rev
Log:
Avoid binding a reference to a dereferenced null pointer, if we try to emit a
diagnostic before we have a source manager.

Modified:
    cfe/trunk/lib/Basic/Diagnostic.cpp

Modified: cfe/trunk/lib/Basic/Diagnostic.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Diagnostic.cpp?rev=162070&r1=162069&r2=162070&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Diagnostic.cpp (original)
+++ cfe/trunk/lib/Basic/Diagnostic.cpp Thu Aug 16 19:55:32 2012
@@ -145,6 +145,9 @@
   assert(DiagStatePoints.front().Loc.isInvalid() &&
          "Should have created a DiagStatePoint for command-line");
 
+  if (!SourceMgr)
+    return DiagStatePoints.end() - 1;
+
   FullSourceLoc Loc(L, *SourceMgr);
   if (Loc.isInvalid())
     return DiagStatePoints.end() - 1;