Re: libstdc++/8851: Slice_array assignment changes right side, leaves left side unchanged.

Re: libstdc++/8851: Slice_array assignment changes right side, leaves left side unchanged.

[Alex Genkin]

The following reply was made to PR libstdc++/8851; it has been noted by GNATS.

From: "Alex Genkin" <agenkin@dimacs.rutgers.edu>
To: <gdr@gcc.gnu.org>, <agenkin@dimacs.rutgers.edu>, <gcc-bugs@gcc.gnu.org>,
        <gcc-prs@gcc.gnu.org>, <gcc-gnats@gcc.gnu.org>
Cc:  
Subject: Re: libstdc++/8851: Slice_array assignment changes right side, leaves left side unchanged.
Date: Tue, 10 Dec 2002 10:34:12 -0500

 Wonderful! When and how can I access the fix?
 Thank you
 
 Alexander Genkin
 agenkin@dimacs.rutgers.edu
 732 445 4579
 
 ----- Original Message -----
 From: <gdr@gcc.gnu.org>
 To: <agenkin@dimacs.rutgers.edu>; <gcc-bugs@gcc.gnu.org>; <gcc-prs@gcc.gnu.org>;
 <gdr@gcc.gnu.org>
 Sent: Tuesday, December 10, 2002 2:42 AM
 Subject: Re: libstdc++/8851: Slice_array assignment changes right side, leaves
 left side unchanged.
 
 
 > Synopsis: Slice_array assignment changes right side, leaves left side
 unchanged.
 >
 > State-Changed-From-To: analyzed->closed
 > State-Changed-By: gdr
 > State-Changed-When: Mon Dec  9 23:42:45 2002
 > State-Changed-Why:
 >     Fixed on both mainline (3.3) and 3.2 branch
 >
 >
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=88
 51
 >
 >
 
 

Re: libstdc++/8851: Slice_array assignment changes right side, leaves left side unchanged.

[Gabriel Dos Reis]

The following reply was made to PR libstdc++/8851; it has been noted by GNATS.

From: Gabriel Dos Reis <gdr@integrable-solutions.net>
To: "Alex Genkin" <agenkin@dimacs.rutgers.edu>
Cc: <gcc-bugs@gcc.gnu.org>, <gcc-gnats@gcc.gnu.org>
Subject: Re: libstdc++/8851: Slice_array assignment changes right side, leaves left side unchanged.
Date: 11 Dec 2002 21:11:45 +0100

 "Alex Genkin" <agenkin@dimacs.rutgers.edu> writes:
 
 | Wonderful! When and how can I access the fix?
 
 The next official release of GCC (either 3.2.2 or 3.3) will have it.
 Or you can grab a CVS version (prerelease) of 3.2.2 from the usual
 places (see http://gcc.gnu.org/)
 
 -- Gaby

Re: libstdc++/8851: Slice_array assignment changes right side, leaves left side unchanged.

[gdr]

Synopsis: Slice_array assignment changes right side, leaves left side unchanged.

State-Changed-From-To: analyzed->closed
State-Changed-By: gdr
State-Changed-When: Mon Dec  9 23:42:45 2002
State-Changed-Why:
    Fixed on both mainline (3.3) and 3.2 branch

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8851

Re: libstdc++/8851: Slice_array assignment changes right side, leaves left side unchanged.

[gdr]

Synopsis: Slice_array assignment changes right side, leaves left side unchanged.

Responsible-Changed-From-To: unassigned->gdr
Responsible-Changed-By: gdr
Responsible-Changed-When: Sat Dec  7 09:38:38 2002
Responsible-Changed-Why:
    Mine.
State-Changed-From-To: open->analyzed
State-Changed-By: gdr
State-Changed-When: Sat Dec  7 09:38:38 2002
State-Changed-Why:
    Confirmed.  How embarassing! :-(
    Working on a fix.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8851

libstdc++/8851: Slice_array assignment changes right side, leaves left side unchanged.

[agenkin]

>Number:         8851
>Category:       libstdc++
>Synopsis:       Slice_array assignment changes right side, leaves left side unchanged.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          wrong-code
>Submitter-Id:   net
>Arrival-Date:   Fri Dec 06 14:26:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Alexander Genkin
>Release:        gcc version 3.2 20020927
>Organization:
>Environment:
Cygwin
>Description:
Slice_array assignment changes right side, leaves left side unchanged.

#include <iostream>
#include <valarray>
using namespace std;

std::ostream& operator<<( std::ostream& s, const valarray<double>& vad ) {
    for( size_t i=0; i<vad.size(); i++ ) s<<vad[i]<<" ";
    return s;
}

int main() {
    valarray<double> a(1.0,9);
    valarray<double> b(2.0,9);

    b[slice(0,3,3)] = a[slice(2,3,3)];
    cout<<endl<<"a "<<a;
    cout<<endl<<"b "<<b;

    return 0;
}

Output is:
a 1 1 2 1 1 2 1 1 2
b 2 2 2 2 2 2 2 2 2
>How-To-Repeat:

>Fix:

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