Re: c++/8050: g++ instantiates template too late

Re: c++/8050: g++ instantiates template too late

[nathan]

Synopsis: g++ instantiates template too late

State-Changed-From-To: open->analyzed
State-Changed-By: nathan
State-Changed-When: Mon Sep 30 10:42:50 2002
State-Changed-Why:
    confirmed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8050

Re: c++/8050: g++ instantiates template too late

[steven]

Synopsis: g++ instantiates template too late

State-Changed-From-To: analyzed->closed
State-Changed-By: steven
State-Changed-When: Tue Apr 15 21:33:20 2003
State-Changed-Why:
    http://gcc.gnu.org/ml/gcc-bugs/2003-04/msg00734.html

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8050

Re: c++/8050: g++ instantiates template too late

[florian.kirsch]

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The following reply was made to PR c++/8050; it has been noted by GNATS.

From: florian.kirsch@gmx.net
To: gcc-bugs@gcc.gnu.org, marc@mit.edu, gcc-gnats@gcc.gnu.org, nobody@gcc.gnu.org, cc-prs@gcc.gnu.org 
Cc:  
Subject: Re: c++/8050: g++ instantiates template too late
Date: Tue, 15 Apr 2003 22:36:17 +0200 (MEST)

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8050
 
 This bug appears to be fixed in
 gcc version 3.2.3 20030412 (prerelease)
 gcc version 3.3 20030412 (prerelease)
 gcc version 3.4 20030115 (experimental)
 
 I guess the report can be closed.
 
 Florian
 
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Re: c++/8050: g++ instantiates template too late

[Marc Horowitz]

The following reply was made to PR c++/8050; it has been noted by GNATS.

From: Marc Horowitz <marc@mit.edu>
To: Andrew Pinski <apinski@apple.com>
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c++/8050: g++ instantiates template too late
Date: 25 Sep 2002 22:49:59 -0400

 Andrew Pinski <apinski@apple.com> writes:
 
 >> 2.96 is not support by the FSF, look for an update on redhat's site
 >> and/or contact them.
 
 And while I'm at it, the gcc on Mac OS X 10.2.1 is also affected.
 
                 Marc

Re: c++/8050: g++ instantiates template too late

[Marc Horowitz]

The following reply was made to PR c++/8050; it has been noted by GNATS.

From: Marc Horowitz <marc@mit.edu>
To: Andrew Pinski <apinski@apple.com>
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c++/8050: g++ instantiates template too late
Date: 25 Sep 2002 22:48:54 -0400

 Andrew Pinski <apinski@apple.com> writes:
 
 >> 2.96 is not support by the FSF, look for an update on redhat's site
 >> and/or contact them.
 
 Yes, I know, hence my comment that this bug exists in other versions
 of gcc, for instance:
 
 % gcc -v
 Reading specs from /usr/gcc/lib/gcc-lib/sparc-sun-solaris2.8/3.0.3/specs
 Configured with: ./configure --prefix=/usr/gcc --disable-shared
 Thread model: posix
 gcc version 3.0.3
 
 Same code, same gcc invocation, same erroneous output.
 
                 Marc

Re: c++/8050: g++ instantiates template too late

[Andrew Pinski]

The following reply was made to PR c++/8050; it has been noted by GNATS.

From: Andrew Pinski <apinski@apple.com>
To: marc@mit.edu
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c++/8050: g++ instantiates template too late
Date: Wed, 25 Sep 2002 16:39:28 -0700

 2.96 is not support by the FSF, look for an update on redhat's site 
 and/or contact them.
 
 Thanks,
 Andrew Pinski
 

c++/8050: g++ instantiates template too late

[marc]

>Number:         8050
>Category:       c++
>Synopsis:       g++ instantiates template too late
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Wed Sep 25 16:16:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Marc Horowitz
>Release:        unknown-1.0
>Organization:
>Environment:
gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)
>Description:
g++ gives an error on valid code.  I believe the problem
has to do with when templates are instantiated and available
to the compiler, but it is difficult to be certain.

I first observed this with the compiler listed in the
Environment field above, but have confirmed it exists
in 3.0.3 and 3.1.  It does not exist in 2.95.3 or 2.95.4.
I do not have access to 3.2, or any snapshots.
>How-To-Repeat:
Compile this code:

template <class T>
class X
{
public:
    operator T*() { return(0); }
};

int* p;
extern X<int> xp;

void foo()
{

    p == xp;
    xp == p;

    p == xp;
}

with this command line:

g++ -c foo.cc

You will get this error:

cfp.cc: In function `void foo ()':
cfp.cc:14: no match for `int *& == X<int> &'

If you reorder the lines in foo() so that line 15 is first,
the compiler does not complain anymore.
>Fix:
Unknown.
>Release-Note:
>Audit-Trail:
>Unformatted: