From 03565d5406e450721732271ad1cfbfe00d03f45b Mon Sep 17 00:00:00 2001
From: Jacek Caban <jacek@codeweavers.com>
Date: Tue, 26 Jun 2018 13:06:17 +0200
Subject: [PATCH] Bug 1471177 - Use mingw-specific IFStream and OFStream
 implementation only when building againstd libstdc++. r=froydnj

MozReview-Commit-ID: 6aKGtK7B74z

--HG--
extra : rebase_source : 708e16c62c91aa482bffd6dbc74f6bfe944d4fec
---
 mfbt/FStream.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mfbt/FStream.h b/mfbt/FStream.h
index d21644ee0e85..8906ab3bdef5 100644
--- a/mfbt/FStream.h
+++ b/mfbt/FStream.h
@@ -18,7 +18,7 @@
 #include <istream>
 #include <ostream>
 #include <fstream>
-#if defined(__MINGW32__)
+#if defined(__MINGW32__) && defined(__GLIBCXX__)
 #include "mozilla/UniquePtr.h"
 #include <fcntl.h>
 #include <ext/stdio_filebuf.h>
@@ -26,7 +26,7 @@
 
 namespace mozilla {
 
-#if defined(__MINGW32__)
+#if defined(__MINGW32__) && defined(__GLIBCXX__)
 // MinGW does not support wchar_t* overloads that are MSVC extension until
 // C++17, so we have to implement widechar wrappers using a GNU extension.
 class IFStream : public std::istream