From f3c740eb2c29c6767e3e06e1f84f7c3e40e12a5f Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Tue, 22 Sep 2009 05:38:01 +0000
Subject: [PATCH] Allow PCH files to be read from stdin.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82525 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Frontend/PCHReader.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/Frontend/PCHReader.cpp b/lib/Frontend/PCHReader.cpp
index e85f58b0e9..c493e39776 100644
--- a/lib/Frontend/PCHReader.cpp
+++ b/lib/Frontend/PCHReader.cpp
@@ -1388,8 +1388,13 @@ PCHReader::PCHReadResult PCHReader::ReadPCH(const std::string &FileName) {
   this->FileName = FileName;
 
   // Open the PCH file.
+  //
+  // FIXME: This shouldn't be here, we should just take a raw_ostream.
   std::string ErrStr;
-  Buffer.reset(llvm::MemoryBuffer::getFile(FileName.c_str(), &ErrStr));
+  if (FileName == "-")
+    Buffer.reset(llvm::MemoryBuffer::getSTDIN());
+  else
+    Buffer.reset(llvm::MemoryBuffer::getFile(FileName.c_str(), &ErrStr));
   if (!Buffer) {
     Error(ErrStr.c_str());
     return IgnorePCH;