From fe2e381de570881352ebb621f5e39234f2d8efc9 Mon Sep 17 00:00:00 2001
From: Dimitrij Mijoski <dmjpp@hotmail.com>
Date: Wed, 20 Jul 2022 21:04:59 +0200
Subject: [PATCH] Fix warning -Wundef

---
 include/fmt/ostream.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/fmt/ostream.h b/include/fmt/ostream.h
index 4a0df987..8c02b0a0 100644
--- a/include/fmt/ostream.h
+++ b/include/fmt/ostream.h
@@ -10,7 +10,7 @@
 
 #include <fstream>
 #include <ostream>
-#if _WIN32 && __GLIBCXX__
+#if defined(_WIN32) && defined(__GLIBCXX__)
 #  include <ext/stdio_filebuf.h>
 #  include <ext/stdio_sync_filebuf.h>
 #endif
@@ -96,7 +96,7 @@ inline bool write_ostream_msvc_unicode(std::wostream&,
   return false;
 }
 
-#if _WIN32 && __GLIBCXX__
+#if defined(_WIN32) && defined(__GLIBCXX__)
 inline bool write_ostream_gcc_mingw_unicode(std::ostream& os,
                                             fmt::string_view data) {
   auto* rdbuf = os.rdbuf();
@@ -124,7 +124,7 @@ void write_buffer(std::basic_ostream<Char>& os, buffer<Char>& buf) {
   // TODO: check detail::is_utf8(). Here or bellow in print or in vprint?
 #if FMT_MSC_VERSION
   if (write_ostream_msvc_unicode(os, {buf.data(), buf.size()})) return;
-#elif _WIN32 && __GLIBCXX__
+#elif defined(_WIN32) && defined(__GLIBCXX__)
   if (write_ostream_gcc_mingw_unicode(os, {buf.data(), buf.size()})) return;
 #endif
   const Char* buf_data = buf.data();