From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-187049-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 11091 invoked by alias); 25 May 2006 08:29:49 -0000
Received: (qmail 11044 invoked by uid 48); 25 May 2006 08:29:41 -0000
Date: Thu, 25 May 2006 08:29:00 -0000
Subject: [Bug tree-optimization/27768]  New: [4.2 regression] wrong-code with vectors
X-Bugzilla-Reason: CC
Message-ID: <bug-27768-1771@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-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: 2006-05/txt/msg02605.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

The following code crashes when I compile it with -O2 (mainline)

==========================
#include<vector>

struct A
{
    std::vector<int> v;
    char             c;
};

struct B {};

int main()
{
    A a;
    A a2(a);
    std::vector<B*> b;
    return 0;
}
==========================

The program dies with:

*** glibc detected *** free(): invalid pointer: 0x00002aaaaabc0c60 ***
zsh: 13987 abort      a.out

I'll come up with a reduced testcase next week if nobody beats me.

Happens only with mainline, -O1 is not affected.


-- 
           Summary: [4.2 regression] wrong-code with vectors
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        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=27768