From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 794B33858D1E; Fri, 2 Sep 2022 19:26:02 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 794B33858D1E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1662146762; bh=5T89LZajdMY6Ng5RiiwOsFwJyZxoCQry+RxClHFfihE=; h=From:To:Subject:Date:From; b=iCvoqAxI7XlXTyNyY9zCtk5gS7PTl3oDlHznJgg6YIdXqh5+qgpKjZD8ge5fdD5uq LL+pwSsyD26B16w3LUBB0IxzOWAuLxFAjg4kx/S3Iv3j7SRdzSlqXWSTHR2PoTFNxp Ei3wP52mNnD4+NxC/k/AGbALi87v7eV6rSkIup8I= From: "pangbw at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/106818] New: code is genereated differently with or without 'extern' Date: Fri, 02 Sep 2022 19:26:02 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: pangbw at gmail dot com 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: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: 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=3D106818 Bug ID: 106818 Summary: code is genereated differently with or without 'extern' Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: pangbw at gmail dot com Target Milestone: --- Just wondering why GCC would generate such different code: https://godbolt.org/z/ncE5sWYe8=