From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id E55383858C41; Wed, 18 Sep 2024 17:38:43 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E55383858C41 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1726681123; bh=dqCBfnX7XgskLhyNs5x+yRxzCIA4HCUx6KdelfZXPHg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=fX56MO0U0zlKdO0dbvE++UO/CUuAW0qn07O86xvEF2tGHkCCSe4otUboJvCxEPYqF OvKO8ps8VlJBNqF3MpRXCo6Ly1acHkvgRXIDklAfp6HlW+rLpFNb3kqWfTqkVDrLvR a8qyrFzy6vPZkB02PZgo1CTQj915EKdURJZUiMvE= From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/116767] C const function pointer no code generated (or optimized out) Date: Wed, 18 Sep 2024 17:38:43 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 14.2.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub 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: cc 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=3D116767 Jakub Jelinek changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #3 from Jakub Jelinek --- I bet const on the function type is treated as __attribute__((const)) on it, because the latter uses TREE_READONLY on the FUNCTION_TYPE. Of course, the function really is const in the testcase, so optimizing the = call away is just fine, but bet if you change it such that it has side-effects it would be miscompiled.=