From a9b8da43077a78f9ab223caf4889e6c6eba2c4a3 Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Thu, 25 Oct 2012 00:25:27 +0000
Subject: [PATCH] Fix computation of predefines buffer from the
 preprocessor-option checking, and disable the old predefines-buffer-diff'ing
 code path.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166653 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Serialization/ASTReader.cpp | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/lib/Serialization/ASTReader.cpp b/lib/Serialization/ASTReader.cpp
index 7e768c67fc..d246569a4c 100644
--- a/lib/Serialization/ASTReader.cpp
+++ b/lib/Serialization/ASTReader.cpp
@@ -277,6 +277,7 @@ static bool checkPreprocessorOptions(const PreprocessorOptions &PPOpts,
       } else {
         SuggestedPredefines += "#define ";
         SuggestedPredefines += MacroName.str();
+        SuggestedPredefines += ' ';
         SuggestedPredefines += Existing.first.str();
         SuggestedPredefines += '\n';
       }
@@ -1026,16 +1027,6 @@ void ASTReader::Error(unsigned DiagID,
 
 /// \brief Tell the AST listener about the predefines buffers in the chain.
 bool ASTReader::CheckPredefinesBuffers(bool Complain) {
-  if (Listener) {
-    // We only care about the primary module.
-    ModuleFile &M = ModuleMgr.getPrimaryModule();
-    SuggestedPredefines.clear();
-    return Listener->ReadPredefinesBuffer(PCHPredefinesBuffers,
-                                          M.ActualOriginalSourceFileName,
-                                          SuggestedPredefines,
-                                          FileMgr,
-                                          Complain);
-  }
   return false;
 }
 
-- 
2.50.1