File pr13141.patch of Package llvm

From e9ddb0fd37e4245392af7e8f1e2c86a44d4339ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lubo=C5=A1=20Lu=C5=88=C3=A1k?= <l.lunak@suse.cz>
Date: Mon, 18 Jun 2012 22:23:37 +0200
Subject: [PATCH] do not reject PCH because of -DFOO -DFOO duplication

---
 lib/Serialization/ASTReader.cpp |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/lib/Serialization/ASTReader.cpp b/lib/Serialization/ASTReader.cpp
index f224056..d176ee3 100644
--- tools/clang/lib/Serialization/ASTReader.cpp
+++ tools/clang/lib/Serialization/ASTReader.cpp
@@ -259,6 +259,11 @@ bool PCHValidator::ReadPredefinesBuffer(const PCHPredefinesBlocks &Buffers,
   // definitions and they may appear at any point in the output.
   std::sort(CmdLineLines.begin(), CmdLineLines.end());
   std::sort(PCHLines.begin(), PCHLines.end());
+  // And remove duplicated definitions.
+  CmdLineLines.resize(
+    std::unique(CmdLineLines.begin(), CmdLineLines.end())-CmdLineLines.begin());
+  PCHLines.resize(
+    std::unique(PCHLines.begin(), PCHLines.end())-PCHLines.begin());
 
   // Determine which predefines that were used to build the PCH file are missing
   // from the command line.
-- 
1.7.7