From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 553553858C53; Tue, 25 Apr 2023 12:54:41 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 553553858C53 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1682427281; bh=6d2pGjXmLdU80xkxPoH1iqY76DMC5erQGW7N6f/M1X4=; h=From:To:Subject:Date:In-Reply-To:References:From; b=MrTS3eqIxvL+qTPSApbMeUKXCod7XcgMoWXItcE4Efb/fQcHEYKd48CUEADjL97Q/ 1hMei57EyXgeJtTeZkrigowrcLKxhEQv6jh3/Nt9HGa9Y+Xnk9HZkgjV38K5Qj3/X8 B1ig+3a0fJmxTqzUJ/84CN+vfn4spMgVDc6Nv/Xo= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/109609] [12/13/14 Regression] tail call for function even when passing a ptr which references a local array still Date: Tue, 25 Apr 2023 12:54:39 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 12.2.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 12.3 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=3D109609 --- Comment #14 from Richard Biener --- Btw, looking at the user modref_access_analysis::get_access_for_fnspec it interprets the size as upper bound (also for 't'). Likewise for get_access_for_fnspec. Just the check_fnspec use in tree-ssa-alias.cc interprets both as exact sizes. So a "conservative" fix that's backportable would simply adjust the tree-ssa-alias.cc use to behave similarly.=