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Thu, 02 Oct 2025 12:58:55 -0400 X-MC-Unique: -TAPVyzENA6RD9X8jnf70A-1 X-Mimecast-MFC-AGG-ID: -TAPVyzENA6RD9X8jnf70A_1759424332 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 2CD7419560B5; Thu, 2 Oct 2025 16:58:52 +0000 (UTC) Received: from fweimer-oldenburg.csb.redhat.com (unknown [10.44.32.225]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id C366219560B1; Thu, 2 Oct 2025 16:58:48 +0000 (UTC) To: Peter Bergner via Libc-help Cc: Adhemerval Zanella Netto , Sachin Monga , "libc-alpha@sourceware.org" , gdb@sourceware.org, Peter Bergner , Segher Boessenkool , Michael Meissner , Surya Kumari Jangala , Carl Love Subject: Re: [EXT] Re: gdb does not stop at printf for ppc In-Reply-To: (Peter Bergner via Libc-help's message of "Thu, 2 Oct 2025 10:57:22 -0500") References: <0535055f-7a42-4390-b134-34b8e3ee657e@linaro.org> Date: Thu, 02 Oct 2025 18:58:46 +0200 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: pDDgpMkLriydpBarH-UEcEAs3BGmQeCkiTA_wAAyf24_1759424332 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Florian Weimer via Gdb Reply-To: Florian Weimer Errors-To: gdb-bounces~public-inbox=simark.ca@sourceware.org Sender: "Gdb" * Peter Bergner via Libc-help: > Ok, it's an even bigger problem than we thought. I'm surprised no one > else has hit this before us. We've encountered it with fortification and IFUNC resolvers. It used to be considered a user error. > Ok, this is promising and yeah, is what Carl and Uli suggested. > That said, their comment from the bugzilla: > > The new redirected symbols need to be dynamic symbols in case only > the stripped binary is available. I'd recommend distributions do not strip .symtab on libc.so.6. I don't think making this a dynamic symbol is worth it. It would have to be a compatibility symbol under a separate symbol version, one for each variant alias (eight for POWER?). This is quite a bit of complexity. Thanks, Florian