GCC Bugzilla Bug 15025

I came up with this reducing PR 15024:
template<typename> struct CartesianURM;
template<typename a> struct B
{
  typedef CartesianURM<a> F;
};
template <typename c> struct G : public B<c>::F
{
};
struct CartesianURM {};
G<int> f();

Indeed, a regression on 3.4 and mainline w.r.t. 3.3 and previous versions. 
The code is definitely invalid. This is the shortest I can get: 
---------- 
template <int> struct X; 
struct X {}; 
---------- 
 
W. 

Subject: Bug 15025

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	mmitchel@gcc.gnu.org	2004-05-23 21:02:18

Modified files:
	gcc/testsuite  : ChangeLog 
	gcc/cp         : ChangeLog decl.c 
Added files:
	gcc/testsuite/g++.dg/template: redecl1.C 

Log message:
	PR c++/15025
	* decl.c (xref_tag): Issue errors about redeclaring template
	classes as non-template classes.
	
	PR c++/15025
	* g++.dg/template/redecl1.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3389.2.180&r2=1.3389.2.181
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3892.2.103&r2=1.3892.2.104
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/decl.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.1174.2.19&r2=1.1174.2.20
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/redecl1.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1

*** Bug 15024 has been marked as a duplicate of this bug. ***

Subject: Bug 15025

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	mmitchel@gcc.gnu.org	2004-05-23 21:07:00

Modified files:
	gcc/testsuite  : ChangeLog 
	gcc/cp         : ChangeLog decl.c 
Added files:
	gcc/testsuite/g++.dg/template: redecl1.C 

Log message:
	PR c++/15025
	* decl.c (xref_tag): Issue errors about redeclaring template
	classes as non-template classes.
	
	PR c++/15025
	* g++.dg/template/redecl1.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3774&r2=1.3775
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/redecl1.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4054&r2=1.4055
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/decl.c.diff?cvsroot=gcc&r1=1.1209&r2=1.1210

Fixed in GCC 3.4.1.