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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <875zad7yrc.fsf@oldenburg2.str.redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Adhemerval Zanella via Libc-alpha Reply-To: Adhemerval Zanella Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" On 24/07/2020 11:50, Florian Weimer via Libc-alpha wrote: > Recommend the new __libc_single_thread variable instead. > > --- > NEWS | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/NEWS b/NEWS > index 83aed60e19..7fb167e650 100644 > --- a/NEWS > +++ b/NEWS > @@ -134,6 +134,14 @@ Deprecated and removed features, and other changes affecting compatibility: > or contents might be overwritten on subsequent calls in the same thread or > if the thread is terminated. It makes strerror MT-safe. > > +* Using weak references to libpthread functions such as pthread_create > + or pthread_key_create to detect the singled-threaded nature of a > + program is an obsolescent feature. Future versions of glibc will > + define pthread_create within libc.so.6 itself, so such checks will > + always flag the program as multi-threaded. Applications should check > + the __libc_single_threaded variable declared in > + instead. > + > * The "files" NSS module no longer supports the "key" database (used for > secure RPC). The contents of the /etc/publickey file will be ignored, > regardless of the settings in /etc/nsswitch.conf. (This method of > Should we add it on the 'Major features' instead along with the single-threaded entry?