[Bug c++/17936] New: [4.0 regression] Instantiation of specialization rejected

[Bug c++/17936] New: [4.0 regression] Instantiation of specialization rejected

[reichelt at gcc dot gnu dot org]

The following code snippet does not compile any more on mainline:

==================================
template<int, int N> struct A
{
    void foo();
};

template<int N> struct A<1, N>
{
    void foo();
};

template<> void A<1, 2>::foo();
==================================

vectors.cc:11: error: prototype for `void A<1, N>::foo() [with int N = 2]' does
not match any in class `A<1, 2>'
vectors.cc:8: error: candidate is: void A<1, N>::foo() [with int N = 2]
vectors.cc:11: error: `void A<1, N>::foo() [with int N = 2]' and `void A<1,
N>::foo() [with int N = 2]' cannot be overloaded
vectors.cc:11: error: prototype for `void A<1, N>::foo() [with int N = 2]' does
not match any in class `A<1, 2>'
vectors.cc:8: error: candidate is: void A<1, N>::foo() [with int N = 2]
vectors.cc:11: error: `void A<1, N>::foo() [with int N = 2]' and `void A<1,
N>::foo() [with int N = 2]' cannot be overloaded

This was caused by Mark's patch
http://gcc.gnu.org/ml/gcc-cvs/2004-10/msg00316.html

Mark, could you please have a look?

-- 
           Summary: [4.0 regression] Instantiation of specialization
                    rejected
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: rejects-valid, monitored
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
                CC: bangerth at dealii dot org,gcc-bugs at gcc dot gnu dot
                    org,mark at codesourcery dot com
OtherBugsDependingO 17522
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17936

[Bug c++/17936] [4.0 regression] Instantiation of specialization rejected

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-11 17:04 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-10-11 17:04:29
               date|                            |
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17936

[Bug c++/17936] [4.0 regression] Instantiation of specialization rejected

[mmitchel at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |mark at codesourcery dot com
                   |dot org                     |
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17936

[Bug c++/17936] [4.0 regression] Declaration of specialization rejected

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-10-11 22:50 -------
Subject: Bug 17936

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	mmitchel@gcc.gnu.org	2004-10-11 22:50:00

Modified files:
	gcc/testsuite  : ChangeLog 
	gcc/cp         : ChangeLog cp-tree.h pt.c 
Added files:
	gcc/testsuite/g++.dg/template: spec18.C 

Log message:
	PR c++/17936
	* cp-tree.h (CLASSTYPE_TEMPLATE_SPECIALIZATION): Add a comment.
	* pt.c (optimize_specialization_lookup_p): Do not optimize lookups
	for members of partial or explicit specializations.
	
	PR c++/17936
	* g++.dg/template/spec18.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4437&r2=1.4438
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/spec18.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4425&r2=1.4426
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/cp-tree.h.diff?cvsroot=gcc&r1=1.1061&r2=1.1062
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&r1=1.934&r2=1.935



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17936

[Bug c++/17936] [4.0 regression] Declaration of specialization rejected

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-10-11 22:51 -------
Fixed in GCC 4.0.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17936