From ac58e9fc0b256ace8aa66ed6561ba49063b6385e Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Thu, 13 Mar 2014 02:09:51 +0000
Subject: [PATCH] MC: fix possible NULL pointer dereference

Avoid NULL pointer scenario found via clang's static analyzer.

llvm-svn: 203745
---
 llvm/lib/MC/MCParser/AsmParser.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/MC/MCParser/AsmParser.cpp b/llvm/lib/MC/MCParser/AsmParser.cpp
index 529ddb4577bd..9effbb3ddddc 100644
--- a/llvm/lib/MC/MCParser/AsmParser.cpp
+++ b/llvm/lib/MC/MCParser/AsmParser.cpp
@@ -2005,7 +2005,7 @@ bool AsmParser::parseMacroArguments(const MCAsmMacro *M,
       if (FAI >= NParameters) {
         Error(IDLoc,
               "parameter named '" + FA.Name + "' does not exist for macro '" +
-              M->Name + "'");
+              (M ? M->Name : "<unamed>") + "'");
         return true;
       }
       PI = FAI;