From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21172 invoked by alias); 15 Jul 2013 10:11:06 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 18820 invoked by uid 48); 15 Jul 2013 10:09:02 -0000 From: "burnus at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/57895] Segmentation fault in gfc_restore_last_undo_checkpoint Date: Mon, 15 Jul 2013 10:11:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: fortran X-Bugzilla-Version: 4.8.1 X-Bugzilla-Keywords: diagnostic, ice-on-invalid-code X-Bugzilla-Severity: minor X-Bugzilla-Who: burnus at gcc dot gnu.org X-Bugzilla-Status: NEW 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: keywords bug_status cf_reconfirmed_on cc cf_known_to_work everconfirmed cf_known_to_fail Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2013-07/txt/msg00733.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57895 Tobias Burnus changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |diagnostic, | |ice-on-invalid-code Status|UNCONFIRMED |NEW Last reconfirmed| |2013-07-15 CC| |burnus at gcc dot gnu.org Known to work| |4.1.2 Ever confirmed|0 |1 Known to fail| |4.3.4, 4.5.3, 4.6.3, 4.7.3, | |4.8.1, 4.9.0 --- Comment #1 from Tobias Burnus --- That's a regression. GCC 4.1 gives: Error: Syntax error in COMMON statement at (1) due to the '$' (and exits without failure). But GCC 4.3 and later segfault. I think one should apply the following patch to give a good error message (instead of none). However, it does not prevent the segfault. --- a/gcc/fortran/match.c +++ b/gcc/fortran/match.c @@ -557,6 +557,6 @@ gfc_match_name (char *buffer) if (c == '$' && !gfc_option.flag_dollar_ok) { - gfc_error ("Invalid character '$' at %C. Use -fdollar-ok to allow it " - "as an extension"); + gfc_error_now ("Invalid character '$' at %C. Use -fdollar-ok to allow it " + "as an extension"); return MATCH_ERROR; }