Merging r197314:
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r197314 | logan | 2013-12-13 22:45:09 -0800 (Fri, 13 Dec 2013) | 9 lines

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.


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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/branches/release_34@198100 91177308-0d34-0410-b5e6-96231b3b80d8

src/future.cpp

diff --git a/src/future.cpp b/src/future.cpp
index 70919ab..c67dc58 100644
--- a/src/future.cpp
+++ b/src/future.cpp
@@ -26,8 +26,13 @@
     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 @@
     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

src/regex.cpp

diff --git a/src/regex.cpp b/src/regex.cpp
index e3ec281..fb820e2 100644
--- a/src/regex.cpp
+++ b/src/regex.cpp
@@ -69,8 +69,10 @@
 
 namespace {
 
+#if defined(__clang__)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wpadded"
+#endif
 
 struct collationnames
 {
@@ -78,7 +80,9 @@
     char char_;
 };
 
+#if defined(__clang__)
 #pragma clang diagnostic pop
+#endif
 
 const collationnames collatenames[] =
 {
@@ -195,8 +199,10 @@
     {"zero", 0x30}
 };
 
+#if defined(__clang__)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wpadded"
+#endif
 
 struct classnames
 {
@@ -204,7 +210,9 @@
     ctype_base::mask mask_;
 };
 
+#if defined(__clang__)
 #pragma clang diagnostic pop
+#endif
 
 const classnames ClassNames[] =
 {