From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Mon, 4 May 2015 19:58:00 +0000 (+0000)
Subject: [modules] Don't bother registering loaded macros if there are none.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c2d6540aeb6729afe11498e746a10fde0a9bc7d0;p=clang

[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
---

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