From 70dd8bb7a1bb9023922340239ed9a6417036709a Mon Sep 17 00:00:00 2001
From: Hans Wennborg <hans@hanshq.net>
Date: Thu, 24 Jul 2014 21:09:45 +0000
Subject: [PATCH] Windows: Don't wildcard expand /? or -?

Even if there's a file called c:\a, we want /? to be preserved as
an option, not expanded to a filename.

llvm-svn: 213894
---
 lib/Support/Windows/Process.inc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/Support/Windows/Process.inc b/lib/Support/Windows/Process.inc
index 9eeca62d9d6..61749a72727 100644
--- a/lib/Support/Windows/Process.inc
+++ b/lib/Support/Windows/Process.inc
@@ -213,6 +213,11 @@ WildcardExpand(const wchar_t *Arg, SmallVectorImpl<const char *> &Args,
     return ConvertAndPushArg(Arg, Args, Allocator);
   }
 
+  if (wcscmp(Arg, L"/?") == 0 || wcscmp(Arg, L"-?") == 0) {
+    // Don't wildcard expand /?. Always treat it as an option.
+    return ConvertAndPushArg(Arg, Args, Allocator);
+  }
+
   // Extract any directory part of the argument.
   SmallVector<char, MAX_PATH> Dir;
   if (std::error_code ec = windows::UTF16ToUTF8(Arg, wcslen(Arg), Dir))