From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 6C766396ECE9; Fri, 1 May 2020 18:05:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6C766396ECE9 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1588356331; bh=wK1V+REIXVuwAKjq0Y4YNFX751jC3lb24gXIwnZJXEo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=NCip7/S0HxW7QEsYwz+OUB0ZGWVswjD31nMjYinuj0C3odLcTdiGsUhwt/FoCYJRR Gv47TDezwZbV9z0cOqkFQ1+6xu9GkVM/MWNDn65wqzIiYqufdYrs98N5+vpWn+3JXA KcCzc+fXbyhEu7AX3oaMerAld3TOrEPDWtCYoRY0= From: "msebor at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/87719] missing warning on printf %s and unterminated array Date: Fri, 01 May 2020 18:05:31 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 9.0 X-Bugzilla-Keywords: diagnostic X-Bugzilla-Severity: normal X-Bugzilla-Who: msebor at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: FIXED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: msebor at gcc dot gnu.org X-Bugzilla-Target-Milestone: 9.3 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cf_known_to_fail cf_known_to_work resolution bug_status target_milestone assigned_to 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 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 May 2020 18:05:31 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D87719 Martin Sebor changed: What |Removed |Added ---------------------------------------------------------------------------- Known to fail|9.0 |8.3.0 Known to work| |10.0, 9.2.0 Resolution|--- |FIXED Status|UNCONFIRMED |RESOLVED Target Milestone|--- |9.3 Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot g= nu.org --- Comment #1 from Martin Sebor --- GCC 9 and 10 issue the expected warning, likely as a result of r264822: pr87719.c: In function =E2=80=98f=E2=80=99: pr87719.c:5:26: warning: =E2=80=98%s=E2=80=99 directive argument is not a n= ul-terminated string [-Wformat-overflow=3D] 5 | __builtin_sprintf (d, "%s", a); // warning, good | ^~ ~ pr87719.c:1:12: note: referenced argument declared here 1 | const char a[] =3D { 'a', 'b' }; | ^ pr87719.c: In function =E2=80=98g=E2=80=99: pr87719.c:10:22: warning: =E2=80=98%s=E2=80=99 directive argument is not a = nul-terminated string [-Wformat-overflow=3D] 10 | __builtin_printf ("%s", a); // missing warning | ^~ ~ pr87719.c:1:12: note: referenced argument declared here 1 | const char a[] =3D { 'a', 'b' }; | ^=