Re: optimization/6956: when the given code is compiled with optimization > 0, it fails

Re: optimization/6956: when the given code is compiled with optimization > 0, it fails

[Rich Herrick]

The following reply was made to PR optimization/6956; it has been noted by GNATS.

From: "Rich Herrick" <spamjunk@stny.rr.com>
To: <bangerth@dealii.org>, <gcc-bugs@gcc.gnu.org>, <gcc-prs@gcc.gnu.org>,
   <nobody@gcc.gnu.org>, <spamjunk@stny.rr.com>, <gcc-gnats@gcc.gnu.org>
Cc:  
Subject: Re: optimization/6956: when the given code is compiled with optimization > 0, it fails
Date: Sat, 22 Mar 2003 17:58:54 -0500

 I believe the problem is fixed in the latest version of gcc.
 
 Thanks!
 
 ----- Original Message -----
 From: <bangerth@dealii.org>
 To: <gcc-bugs@gcc.gnu.org>; <gcc-prs@gcc.gnu.org>; <nobody@gcc.gnu.org>;
 <spamjunk@stny.rr.com>
 Sent: Saturday, March 22, 2003 12:49 PM
 Subject: Re: optimization/6956: when the given code is compiled with
 optimization > 0, it fails
 
 
 > Synopsis: when the given code is compiled with optimization > 0, it fails
 >
 > State-Changed-From-To: open->feedback
 > State-Changed-By: bangerth
 > State-Changed-When: Sat Mar 22 17:49:19 2003
 > State-Changed-Why:
 >     This code yields "5" for me on all versions of gcc I have
 >     access to. Unfortunately, you don't say which version you
 >     are using, and also not what you mean by "it fails". Can
 >     you elaborate?
 >
 >     Thanks
 >       Wolfgang
 >
 >
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&p
 r=6956
 >
 

Re: optimization/6956: when the given code is compiled with optimization > 0, it fails

[bangerth]

Synopsis: when the given code is compiled with optimization > 0, it fails

State-Changed-From-To: feedback->closed
State-Changed-By: bangerth
State-Changed-When: Mon Mar 24 15:14:44 2003
State-Changed-Why:
    Apparently fixed

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6956

Re: optimization/6956: when the given code is compiled with optimization > 0, it fails

[bangerth]

Synopsis: when the given code is compiled with optimization > 0, it fails

State-Changed-From-To: open->feedback
State-Changed-By: bangerth
State-Changed-When: Sat Mar 22 17:49:19 2003
State-Changed-Why:
    This code yields "5" for me on all versions of gcc I have
    access to. Unfortunately, you don't say which version you
    are using, and also not what you mean by "it fails". Can
    you elaborate?
    
    Thanks
      Wolfgang

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6956

optimization/6956: when the given code is compiled with optimization > 0, it fails

[spamjunk]

>Number:         6956
>Category:       optimization
>Synopsis:       when the given code is compiled with optimization > 0, it fails
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 07 07:45:59 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     spamjunk@stny.rr.com
>Release:        unknown-1.0
>Organization:
>Environment:
dos/windows
>Description:
#include <cstdio>
using namespace std;

template<class T, int I>
struct A {
    A() {}
    typedef T array[I];
    struct B {
        array a;
    };
    static B X()
    {
        const B b = {{0, 0, 5}};
        return b;
    }
};

typedef A<int, 5> C;

int main()
{
    printf("%d\n", C::X().a[2]);
    return 0;
}

This code fails with optimization turned on.  If b is made a static constant, it doesn't fail.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: