From b0d5be563b65ac06ff8b470a6069edd711233136 Mon Sep 17 00:00:00 2001
From: Logan Chien <tzuhsiang.chien@gmail.com>
Date: Sat, 14 Dec 2013 06:45:09 +0000
Subject: [PATCH] Fix GCC unknown pragma warning in libc++.

We should check defined(__clang__) before the usage of the
clang diagnostic pragmas.

The [-Wswitch] warning in src/future.cpp should be ignored.
As the result, the equivalent GCC pragma is added.

llvm-svn: 197314
---
 libcxx/src/future.cpp | 9 +++++++++
 libcxx/src/regex.cpp  | 8 ++++++++
 2 files changed, 17 insertions(+)

diff --git a/libcxx/src/future.cpp b/libcxx/src/future.cpp
index 70919ab7df84..c67dc58826e8 100644
--- a/libcxx/src/future.cpp
+++ b/libcxx/src/future.cpp
@@ -26,8 +26,13 @@ __future_error_category::name() const _NOEXCEPT
     return "future";
 }
 
+#if defined(__clang__)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wswitch"
+#elif defined(__GNUC__) || defined(__GNUG__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wswitch"
+#endif
 
 string
 __future_error_category::message(int ev) const
@@ -50,7 +55,11 @@ __future_error_category::message(int ev) const
     return string("unspecified future_errc value\n");
 }
 
+#if defined(__clang__)
 #pragma clang diagnostic pop
+#elif defined(__GNUC__) || defined(__GNUG__)
+#pragma GCC diagnostic pop
+#endif
 
 const error_category&
 future_category() _NOEXCEPT
diff --git a/libcxx/src/regex.cpp b/libcxx/src/regex.cpp
index e3ec2810c774..fb820e2bfedc 100644
--- a/libcxx/src/regex.cpp
+++ b/libcxx/src/regex.cpp
@@ -69,8 +69,10 @@ regex_error::~regex_error() throw() {}
 
 namespace {
 
+#if defined(__clang__)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wpadded"
+#endif
 
 struct collationnames
 {
@@ -78,7 +80,9 @@ struct collationnames
     char char_;
 };
 
+#if defined(__clang__)
 #pragma clang diagnostic pop
+#endif
 
 const collationnames collatenames[] =
 {
@@ -195,8 +199,10 @@ const collationnames collatenames[] =
     {"zero", 0x30}
 };
 
+#if defined(__clang__)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wpadded"
+#endif
 
 struct classnames
 {
@@ -204,7 +210,9 @@ struct classnames
     ctype_base::mask mask_;
 };
 
+#if defined(__clang__)
 #pragma clang diagnostic pop
+#endif
 
 const classnames ClassNames[] =
 {