Date: Sun, 18 Aug 2013 08:18:50 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r254477 - stable/9/include Message-ID: <201308180818.r7I8Iolw041964@svn.freebsd.org>
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Author: emaste Date: Sun Aug 18 08:18:49 2013 New Revision: 254477 URL: http://svnweb.freebsd.org/changeset/base/254477 Log: MFC r239960: Properly enable Clang-style atomics when available. In addition to testing against cxx_atomic, we must check c_atomic. The former is only set when building C++ code. Also use __has_extension instead of __has_feature. This allows us to use the atomics outside of C11. PR: threads/170073 Modified: stable/9/include/stdatomic.h Directory Properties: stable/9/include/ (props changed) Modified: stable/9/include/stdatomic.h ============================================================================== --- stable/9/include/stdatomic.h Sun Aug 18 06:08:52 2013 (r254476) +++ stable/9/include/stdatomic.h Sun Aug 18 08:18:49 2013 (r254477) @@ -33,7 +33,7 @@ #include <sys/cdefs.h> #include <sys/_types.h> -#if __has_feature(cxx_atomic) +#if __has_extension(c_atomic) || __has_extension(cxx_atomic) #define __CLANG_ATOMICS #elif __GNUC_PREREQ__(4, 7) #define __GNUC_ATOMICS
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