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Fri, 01 Dec 2023 12:40:52 -0800 (PST) Received: from free.home ([2804:7f1:2080:95b8:2c34:12ec:daf8:e1e5]) by smtp.gmail.com with ESMTPSA id v11-20020a1709028d8b00b001cc50146b43sm3756433plo.202.2023.12.01.12.40.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Dec 2023 12:40:52 -0800 (PST) Received: from livre (livre.home [172.31.160.2]) by free.home (8.15.2/8.15.2) with ESMTPS id 3B1KehNG105360 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Fri, 1 Dec 2023 17:40:44 -0300 From: Alexandre Oliva To: Jonathan Wakely , Jason Merrill Cc: gcc-patches@gcc.gnu.org, libstdc++@gcc.gnu.org Subject: Re: [PATCH] libsupc++: try cxa_thread_atexit_impl at runtime Organization: Free thinker, does not speak for AdaCore References: Date: Fri, 01 Dec 2023 17:40:43 -0300 In-Reply-To: (Jonathan Wakely's message of "Thu, 9 Nov 2023 08:20:59 +0000") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.84 X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,KAM_SHORT,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE,WEIRD_QUOTING autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Nov 9, 2023, Jonathan Wakely wrote: > On Thu, 9 Nov 2023 at 01:56, Alexandre Oliva wrote: >> g++.dg/tls/thread_local-order2.C fails when the toolchain is built for >> a platform that lacks __cxa_thread_atexit_impl, even if the program is >> built and run using that toolchain on a (later) platform that offers >> __cxa_thread_atexit_impl. >> >> This patch adds runtime testing for __cxa_thread_atexit_impl on >> platforms that support weak symbols. >> >> Regstrapped on x86_64-linux-gnu, also tested with gcc-13 on i686- and >> x86_64-, and with ac_cv_func___cxa_thread_atexit_impl=no, that, on a >> distro that lacks __cxa_thread_atexit in libc, forces the newly-added >> code to be exercised, and that enabled thread_local-order2.C to pass >> where the runtime libc has __cxa_thread_atexit_impl. Ok to install? > Seems fine to me. Any objections, Jason? Jason, ping? https://gcc.gnu.org/pipermail/gcc-patches/2023-November/635750.html -- Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/ Free Software Activist GNU Toolchain Engineer More tolerance and less prejudice are key for inclusion and diversity Excluding neuro-others for not behaving ""normal"" is *not* inclusive