From c59b1cae499639fb0f3e9fff525bc74c1e12523f Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Mon, 7 Oct 2013 15:33:30 +0000
Subject: [PATCH] Windows/Process.inc: Fix for +Asserts. &Buf[0] is not
 guaranteed if size is zero.

llvm-svn: 192103
---
 llvm/lib/Support/Windows/Process.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Support/Windows/Process.inc b/llvm/lib/Support/Windows/Process.inc
index 4d801492e830..50a204fe5fae 100644
--- a/llvm/lib/Support/Windows/Process.inc
+++ b/llvm/lib/Support/Windows/Process.inc
@@ -161,7 +161,7 @@ Optional<std::string> Process::GetEnv(StringRef Name) {
   SmallVector<wchar_t, MAX_PATH> Buf;
   size_t Size = MAX_PATH;
   do {
-    Buf.reserve(Size);
+    Buf.resize(Size);
     Size = GetEnvironmentVariableW(&NameUTF16[0], &Buf[0], Buf.capacity());
     if (Size == 0)
       return None;