From 4bd265468cb115efd5c87c59d5a5b6af5d24d48c Mon Sep 17 00:00:00 2001
From: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date: Tue, 13 Mar 2012 02:17:06 +0000
Subject: [PATCH] [libclang] When there's a file error when saving the PCH,
 make sure to clear the error from raw_fd_ostream, otherwise we will crash.

rdar://10976410

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152605 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Frontend/ASTUnit.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/Frontend/ASTUnit.cpp b/lib/Frontend/ASTUnit.cpp
index 7514d8adc3..25c8ab89b7 100644
--- a/lib/Frontend/ASTUnit.cpp
+++ b/lib/Frontend/ASTUnit.cpp
@@ -2411,8 +2411,10 @@ CXSaveError ASTUnit::Save(StringRef File) {
 
   serialize(Out);
   Out.close();
-  if (Out.has_error())
+  if (Out.has_error()) {
+    Out.clear_error();
     return CXSaveError_Unknown;
+  }
 
   if (llvm::sys::fs::rename(TempPath.str(), File)) {
     bool exists;