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Thu, 13 Feb 2025 17:43:27 +0000 (UTC) Received: from f41-zbm-amd (unknown [10.22.81.226]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 065B419373D9; Thu, 13 Feb 2025 17:43:26 +0000 (UTC) Date: Thu, 13 Feb 2025 10:43:21 -0700 From: Kevin Buettner To: Guinevere Larsen Cc: gdb-patches@sourceware.org Subject: Re: Follow up to stabs deprecation - AIX regressions Message-ID: <20250213104321.71331304@f41-zbm-amd> In-Reply-To: <54acfac1-ac30-4012-9a64-8b3070338b11@redhat.com> References: <20250213094829.2b6f73d5@f41-zbm-amd> <54acfac1-ac30-4012-9a64-8b3070338b11@redhat.com> Organization: Red Hat MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: _zIoDVC7y93uimLXVqtguVSfTKioe_AfC7Nq2lyQfOw_1739468607 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces~public-inbox=simark.ca@sourceware.org On Thu, 13 Feb 2025 14:21:01 -0300 Guinevere Larsen wrote: > On 2/13/25 1:48 PM, Kevin Buettner wrote: > > On Thu, 13 Feb 2025 09:25:44 -0300 > > Guinevere Larsen wrote: > > > >> * DWARF reading can sometimes fail in AIX. Currently, reading dwarf for > >> xcoff inferiors is called on it's own, with no warning if dwarf fails > >> (which probably makes sense, considering the default format in aix is > >> still stabs). I added a warning when failing to read dwarf and noticed > >> it being triggered on inferiors compiled with -gdwarf > > > I assume that you mean that stabs is the default when compiling with > > gcc. Is stabs still also the default format for XLC (IBM Open XL C/C++) ? > > Yes, sorry, I meant gcc. The compile farm had versions 10 and 12, both > with the same behavior. > > I don't think the compile farm has XLC compilers available for testing, > or if they do I don't know how to use it, so I couldn't tell you... I think it'd be good to find out XLC's preferred debug format. If it uses/prefers DWARF, that'd be a good argument for gcc (on AIX) switching to DWARF for it's preferred format too. Kevin