From f5ec2acca9456f9c6c5f4060aa53ce72a9bb07f5 Mon Sep 17 00:00:00 2001
From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Wed, 29 Apr 2015 23:40:48 +0000
Subject: [PATCH] Add an assert to get information on buildbot failure.

llvm-svn: 236181
---
 clang/lib/Lex/Preprocessor.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/clang/lib/Lex/Preprocessor.cpp b/clang/lib/Lex/Preprocessor.cpp
index cd00be8..231720b 100644
--- a/clang/lib/Lex/Preprocessor.cpp
+++ b/clang/lib/Lex/Preprocessor.cpp
@@ -627,6 +627,7 @@ bool Preprocessor::HandleIdentifier(Token &Identifier) {
   // If this is a macro to be expanded, do it.
   if (MacroDefinition MD = getMacroDefinition(&II)) {
     auto *MI = MD.getMacroInfo();
+    assert(MI && "macro definition with no macro info?");
     if (!DisableMacroExpansion) {
       if (!Identifier.isExpandDisabled() && MI->isEnabled()) {
         // C99 6.10.3p10: If the preprocessing token immediately after the
-- 
2.7.4