From 03e906d9d59738db2f8d4c05b927cfa5dafd33c1 Mon Sep 17 00:00:00 2001
From: Adrian Prantl <aprantl@apple.com>
Date: Tue, 23 Apr 2019 15:39:13 +0000
Subject: [PATCH] [dsymutil] Fix use-after-free when sys::path::append grows
 the buffer.

<rdar://problem/50117620>

llvm-svn: 359001
---
 llvm/tools/dsymutil/dsymutil.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/tools/dsymutil/dsymutil.cpp b/llvm/tools/dsymutil/dsymutil.cpp
index 3256984..d14dff0 100644
--- a/llvm/tools/dsymutil/dsymutil.cpp
+++ b/llvm/tools/dsymutil/dsymutil.cpp
@@ -328,7 +328,7 @@ static Expected<OutputLocation> getOutputFileName(llvm::StringRef InputFile) {
     return std::move(E);
 
   llvm::sys::path::append(Path, "Contents", "Resources");
-  StringRef ResourceDir = Path;
+  std::string ResourceDir = Path;
   llvm::sys::path::append(Path, "DWARF", llvm::sys::path::filename(DwarfFile));
   return OutputLocation(Path.str(), ResourceDir.str());
 }
-- 
2.7.4