From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-118297-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 16625 invoked by alias); 14 Nov 2004 05:34:27 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
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
Received: (qmail 16603 invoked by uid 48); 14 Nov 2004 05:34:22 -0000
Date: Sun, 14 Nov 2004 05:34:00 -0000
From: "kazu at cs dot umass dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Message-ID: <20041114053417.18472.kazu@cs.umass.edu>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug tree-optimization/18472] New: TREE_OPERAND (t, 1) is referenced for t being GOTO_EXPR
X-Bugzilla-Reason: CC
X-SW-Source: 2004-11/txt/msg01706.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

tree-if-conv.c:tree_if_convert_stmt uses TREE_OPERAND (t, 1)
for t being GOTO_EXPR like so:

    case GOTO_EXPR:
      /* Unconditional goto */
      add_to_predicate_list (bb_for_stmt (TREE_OPERAND (t, 1)), cond);
      bsi_remove (bsi);
      cond = NULL_TREE;
      break;

GOTO_EXPR has only one operand, so TREE_OPERAND (t, 1) is wrong.

Also, nonlocal gotos are represented using __builtin_nonlocal_goto,
computed gotos are represented using GOTO_EXPR, and
all other gotos are represented implicitly.

I don't think the code there is designed to handle computed gotos,
but I could be wrong.

-- 
           Summary: TREE_OPERAND (t, 1) is referenced for t being GOTO_EXPR
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kazu at cs dot umass dot edu
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18472