From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 597CD385783C; Wed, 14 Feb 2024 03:14:03 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 597CD385783C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1707880443; bh=a9oZ+fB82s5bSGimoylKr0TO81wOD0OnbT9Z4AoPJaE=; h=From:To:Subject:Date:In-Reply-To:References:From; b=YVZMmiDLut8fFKH6CmyIK4vPKNe4wwcLLIUMaG1OWERkOHP5h6G7X8MNVnpezKEfd 4ye7wCj8gmUu6WdJKqwfjmw4lF1j/ewlgyIQerTLmURshshgXipTUd5ktETc6AJy4L WE7UAscDnAXcTSjD+cgQ93dzi9OvrvX8w2Qxjyy0= From: "sjames at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/113915] [14 regression] glibc miscompiled for armv7a since r14-4365-g0731889c026bfe Date: Wed, 14 Feb 2024 03:14:02 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: sjames at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113915 --- Comment #5 from Sam James --- (In reply to Sam James from comment #0) > glibc seems to go from 30 failing innocent tests (*) to over 400 between > gcc-13 and gcc-14. Bisected to r14-4365-g0731889c026bfe which fixed PR111= 235. >=20 > It's hard to know where to start with this. I'll try the usual bisection = of > objects and then pragmas although I fear the (necessary) complexities of > glibc's build system may make my usual method tricky. We'll see... >=20 Indeed, optimize("O0") pragma for _dl_find_object_update_1 in dl-find_object.c/o avoids the crash. O1/O2 fail.=