From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-245819-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 24664 invoked by alias); 23 Feb 2008 19:07:37 -0000
Received: (qmail 16758 invoked by uid 48); 23 Feb 2008 19:06:56 -0000
Date: Sat, 23 Feb 2008 19:07:00 -0000
Subject: [Bug c++/35326]  New: [4.2/4.3/4.4 regression] ICE with stray digraph token
X-Bugzilla-Reason: CC
Message-ID: <bug-35326-1771@http.gcc.gnu.org/bugzilla/>
Reply-To: gcc-bugzilla@gcc.gnu.org
To: gcc-bugs@gcc.gnu.org
From: "reichelt at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2008-02/txt/msg02473.txt.bz2

The following invalid code snippet triggers an ICE since GCC 4.2.0:

====================================================
%:%:;
====================================================

bug.cc:1: error: stray '%:%:' in program
bug.cc:1: internal compiler error: vector VEC(fs_p,base) index domain error, in
restore_input_file_stack at toplev.c:1021
Please submit a full bug report, [etc.]

The C frontend doesn't have this problem. Also the version without digraphs
is rejected correctly:

====================================================
##;
====================================================

bug.cc:1: error: stray '##' in program


-- 
           Summary: [4.2/4.3/4.4 regression] ICE with stray digraph token
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35326