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Sun, 11 Oct 2020 13:15:21 -0700 (PDT) Subject: Re: _Atomic To: Bruno Haible References: <4061191.z4sMvIe498@omega> From: Paul Eggert Autocrypt: addr=eggert@cs.ucla.edu; prefer-encrypt=mutual; keydata= mQINBEyAcmQBEADAAyH2xoTu7ppG5D3a8FMZEon74dCvc4+q1XA2J2tBy2pwaTqfhpxxdGA9 Jj50UJ3PD4bSUEgN8tLZ0san47l5XTAFLi2456ciSl5m8sKaHlGdt9XmAAtmXqeZVIYX/UFS 96fDzf4xhEmm/y7LbYEPQdUdxu47xA5KhTYp5bltF3WYDz1Ygd7gx07Auwp7iw7eNvnoDTAl KAl8KYDZzbDNCQGEbpY3efZIvPdeI+FWQN4W+kghy+P6au6PrIIhYraeua7XDdb2LS1en3Ss mE3QjqfRqI/A2ue8JMwsvXe/WK38Ezs6x74iTaqI3AFH6ilAhDqpMnd/msSESNFt76DiO1ZK QMr9amVPknjfPmJISqdhgB1DlEdw34sROf6V8mZw0xfqT6PKE46LcFefzs0kbg4GORf8vjG2 Sf1tk5eU8MBiyN/bZ03bKNjNYMpODDQQwuP84kYLkX2wBxxMAhBxwbDVZudzxDZJ1C2VXujC OJVxq2kljBM9ETYuUGqd75AW2LXrLw6+MuIsHFAYAgRr7+KcwDgBAfwhPBYX34nSSiHlmLC+ KaHLeCLF5ZI2vKm3HEeCTtlOg7xZEONgwzL+fdKo+D6SoC8RRxJKs8a3sVfI4t6CnrQzvJbB n6gxdgCu5i29J1QCYrCYvql2UyFPAK+do99/1jOXT4m2836j1wARAQABtCBQYXVsIEVnZ2Vy dCA8ZWdnZXJ0QGNzLnVjbGEuZWR1PokCVQQTAQgAPwIbAwYLCQgHAwIGFQgCCQoLBBYCAwEC HgECF4AWIQR+N5Kp2Kz31jO8FYjtl+kOYqp+NAUCXyW9lwUJFK4LswAKCRDtl+kOYqp+NKNV D/9HMsI1606n0UuTXHwITsyOjAI9SDOT+C3DUv6qlM5BH2nWAMTiIiyA5uglsJv93oi2vNtF f/Q/m/1cnZWgnVnExkyLI4ENSd1uBvr0/lCSdPlP0Mg6GWSpXMu+x0vdT0AaZNOTE0FnPuol dc3XD76C2qg8sX/iaxXTKHy9P+BlAq/Cs7/pxDQ0EzSn0USZ2C0l5vv4PMpA/picnS6K609J vDGaORmwZeXIZqQNZV+ZQs+UYtVoguDTqby3IUY1I8BlXHRptaj9AMn4Uoh/CqpQlVojoyWl HqaFnnJBKeF0hvJ9SAyalwuzAjG7vQW07MYncaOFm0woiKbg5JLO8F4SBTIkuO0DCf9nLAay 6VsB4rzwdEfRwjPLYAn7MR3fvHCEzfrkldTraiBO1T0ieDK80I7sLf6pMeCYI19pUlx0/NRM GCddiFIQdfthKWXGRS5LAs8jwBf8H6G5PWinPrEIaomIP21ivuhQD07bYq9IiIdeljjUdHcG I0i/B4M56Zaa8Ff38iniOlrDYCmYWR4dCWZiuQeZ3OgqeQs9a6jTvgdDGVmRVqY+jzk8PlaH fcok8ROhFcHKkcfhuBhL25hlRIshRDOEskXqKwnzrbqga3GXZXfsXAoFbzNhLdLv9A+LJAYS kXP6/5qdTpELVGosyH884VdbBpkGI04oYVqulbkCDQRMgHJkARAApoXrvxP3DIfjCNOtXU/P dwMShKdX/RlSs5PfunV1wbKP8herXHrvQdFVqECaTSxmlhzbk8X0PkY9gcVaU2O49T3qsOd1 cHeF52YFGEt0LhsBeMjgNX5uZ1V76r8gyeVlFpWWb0SIwJUBHrDXexF67upeRb2vdHBjYDNe ySn+0B7gFEqvVmZu+LadudDp6kQLjatFvHQHUSGNshBnkkcaTbiI9Pst0GCc2aiznBiPPA2W QxAPlPRh3OGTsn5THADmbjqY6FEMLasVX8DSCblMvLwNeO/8SxziBidhqLpJCqdQRWHku5Xx gIkGeKOz5OLDvXHWJyafrEYjjkS6Ak6B5z6svKliClWnjHQcjlPzyoFFgKTEfcqDxCj4RY0D 0DgtFD0NfyeOidrSB/SzTe2hwryQE3rpSiqo+0cGdzh4yAHKYJ+UrXZ4p93ZhjGfKD1xlrNY DlWyW9PGmbvqFuDmiIAQf9WD/wzEfICc+F+uDDI+uYkRxUFp92ykmdhDEFg1yjYsU8iGU69a Hyvhq36z4zctvbqhRNzOWB1bVJ/dIMDvsExGcXQVDIT7sDNXv0wE3jKSKpp7NDG1oXUXL+2+ SF99Kjy753AbQSAmH617fyBNwhJWvQYg+mUvPpiGOtses9EXUI3lS4v0MEaPG43flEs1UR+1 rpFQWVHo1y1OO+sAEQEAAYkCPAQYAQgAJgIbDBYhBH43kqnYrPfWM7wViO2X6Q5iqn40BQJf Jb2zBQkUrgvPAAoJEO2X6Q5iqn40cnMP/17CgUkXT9aIJriPM8wbceYrcl7+bdYEf79SlwSb bHN7R4CoIJFOlN9S/34typGVYvpgmCJDYFTBxyPO92iMXDgA4+cWHzt5T1aYO9hsKhh7vDtK +6ProZGc+08gUTXHhb97hMMQhknJlnfjpSEC9em906FU+I93T1fTGupnBa3aWcK8jM0JaBGb y2hG1S3olaDLSTtBINNBYmvuWR9MKOhhqDrlk5cwFDJLh5NrXteEY08WAzcLzG3pkrXPHkFe MQtfqk0jLdGGvGC3NCIkqYrdLhiRvGpru38C26REn5f4I0vGE3VfIXHe8TMCNmQut1NtMuUm pDIy1aLxGzuptUhnOJN//r+VjDPoi3LOySNYphqe/dMubsfUr6ohP41mKF81FuwI4amqJtrq IL2yqax3a0qlfwCxXftieqJcuekX+eCPDCKrYMXR0FYgwpG2ITZUGtrEjESlE6Dscx734HKd r5ORIocLUUKEOGeiU6DGhGFdb5Twu0Sn+u1mUPDN0M++CdMvClIE8klo4G91EOImu1Upb8xc OPQwxh1jwqSrU5QwoNmSYegQSHLpIUurFz1iQUh1vpPXzKinkWEqv4IqA1ciL+LyySuLkp7M sJpVRMbWJCNWOOSbaH4oDBJ5dHMGc35x5mosCk90PXknuFDDsYHfDo5smf9lo6YXx7N9 Organization: UCLA Computer Science Department Message-ID: Date: Sun, 11 Oct 2020 13:15:20 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <4061191.z4sMvIe498@omega> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=131.179.128.68; envelope-from=eggert@cs.ucla.edu; helo=zimbra.cs.ucla.edu X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/11 14:49:57 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: bug-gnulib@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Gnulib discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?Q?Marc_Nieper-Wi=c3=9fkirchen?= , bug-gnulib@gnu.org Errors-To: bug-gnulib-bounces+normalperson=yhbt.net@gnu.org Sender: "bug-gnulib" On 10/10/20 3:39 PM, Bruno Haible wrote: > GCC 4.9.x is such a compiler that is non-C11 but supports _Atomic. Oh, I was thinking the other way: a compiler that says it's C11 but doesn't support _Atomic. I wrote my thoughts backwards, though. If Gnulib code won't use _Atomic when compiled with GCC 4.9 (even though _Atomic would work), that doesn't sound like a big deal. For example, Debian 8 Jessie uses GCC 4.9 but long term support for Jessie ended in June and if Debian doesn't support it we don't need to worry about it.