From c2d6540aeb6729afe11498e746a10fde0a9bc7d0 Mon Sep 17 00:00:00 2001
From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Mon, 4 May 2015 19:58:00 +0000
Subject: [PATCH] [modules] Don't bother registering loaded macros if there are
 none.

We don't yet have a reduced testcase for this.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@236454 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Serialization/ASTReader.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Serialization/ASTReader.cpp b/lib/Serialization/ASTReader.cpp
index 0dd9d2e460..c4b4aec24a 100644
--- a/lib/Serialization/ASTReader.cpp
+++ b/lib/Serialization/ASTReader.cpp
@@ -1829,7 +1829,8 @@ void ASTReader::resolvePendingMacro(IdentifierInfo *II,
     Earliest = MD;
   }
 
-  PP.setLoadedMacroDirective(II, Latest);
+  if (Latest)
+    PP.setLoadedMacroDirective(II, Latest);
 }
 
 ASTReader::InputFileInfo
-- 
2.50.1