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c++/7033: gcc-3.1

From: Theodore dot Papadopoulo at sophia dot inria dot fr
To: gcc-gnats at gcc dot gnu dot org
Cc: Lionel dot Champalaune at sophia dot inria dot fr
Date: 14 Jun 2002 16:01:04 -0000
Subject: c++/7033: gcc-3.1
Reply-to: Theodore dot Papadopoulo at sophia dot inria dot fr

>Number:         7033
>Category:       c++
>Synopsis:       gcc-3.1
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 14 09:06:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Theodore Papadopoulo
>Release:        g++-3.1
>Organization:
>Environment:
Frontend bug not related to environment IMHO, but in any case
this is a redhat 6.1 system with an upgraded kernel 2.4.17 (and also an upgraded libc).
>Description:
In the code below, the specilizations with the comments mentionning "extended iterators" does not work. The compiler seems to not consider the last couple of specialization (without any warning or error message at this point) and insists on using the general definition for SameIteratorAs (the one providing the void argument).

I do believe that the standard allows the construct given in the example, so I think this is the g++ frontend fault. The output from g++-3.1, g++-3.0 and g++-2.95.3 are:

mururoa->/usr/local/gcc-3.1/bin/g++ Bug.C 
Bug.C: In function `int main()':
Bug.C:62: variable or field `i3' declared void
Bug.C:63: request for member `print' in `i3', which is of non-aggregate type `
   int'

mururoa->/usr/local/gcc-3.0/bin/g++ Bug.C
Bug.C: In function `int main()':
Bug.C:62: variable or field `i3' declared void
Bug.C:63: request for member `print' in `i3', which is of non-aggregate type 
   `int' 
  
mururoa->/usr/local/gcc/bin/g++ Bug.C  # 2.95.3
Bug.C:25: template parameters not used in partial specialization:
Bug.C:25:         `type'
Bug.C: In function `int main()':
Bug.C:62: variable or field `i3' declared void
Bug.C:63: request for member `print' in `i3', which is of non-aggregate type `int'
>How-To-Repeat:
Just compile the program above with g++-3.1.
>Fix:
None very clean.... Specific cases for given "type" can be done.
>Release-Note:
>Audit-Trail:
>Unformatted:
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