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From: Ed Schouten <ed@FreeBSD.org>
Date: Fri, 5 Sep 2014 05:20:53 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r271154 - head/sys/sys
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Author: ed
Date: Fri Sep  5 05:20:52 2014
New Revision: 271154
URL: http://svnweb.freebsd.org/changeset/base/271154

Log:
  Partially revert r271012.
  
  Incredibly weird: GCC 4.7/4.9 do support the _Noreturn and _Thread_local
  keywords, but not during bootstrapping. GCC is by far the weirdest
  compiler that I've ever used.
  
  Reported by:	andreast@

Modified:
  head/sys/sys/cdefs.h

Modified: head/sys/sys/cdefs.h
==============================================================================
--- head/sys/sys/cdefs.h	Fri Sep  5 05:07:38 2014	(r271153)
+++ head/sys/sys/cdefs.h	Fri Sep  5 05:20:52 2014	(r271154)
@@ -280,13 +280,11 @@
 #define	_Atomic(T)		struct { T volatile __val; }
 #endif
 
-#if !__GNUC_PREREQ__(4, 7)
 #if defined(__cplusplus) && __cplusplus >= 201103L
 #define	_Noreturn		[[noreturn]]
 #else
 #define	_Noreturn		__dead2
 #endif
-#endif
 
 #if !__has_extension(c_static_assert) && !__GNUC_PREREQ__(4, 7)
 #if (defined(__cplusplus) && __cplusplus >= 201103L) || \
@@ -301,7 +299,7 @@
 #endif
 #endif
 
-#if !__has_extension(c_thread_local) && !__GNUC_PREREQ__(4, 9)
+#if !__has_extension(c_thread_local)
 /*
  * XXX: Some compilers (Clang 3.3, GCC 4.7) falsely announce C++11 mode
  * without actually supporting the thread_local keyword. Don't check for