From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-311444-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 15171 invoked by alias); 14 Mar 2010 20:25:50 -0000
Received: (qmail 14997 invoked by uid 48); 14 Mar 2010 20:25:37 -0000
Date: Sun, 14 Mar 2010 20:25:00 -0000
Subject: [Bug c++/43368]  New: different access to templated structure static field give different results
X-Bugzilla-Reason: CC
Message-ID: <bug-43368-11205@http.gcc.gnu.org/bugzilla/>
Reply-To: gcc-bugzilla@gcc.gnu.org
To: gcc-bugs@gcc.gnu.org
From: "pogonyshev at gmx dot net" <gcc-bugzilla@gcc.gnu.org>
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2010-03/txt/msg01310.txt.bz2

Tested with Debian testing 4.4.3-3 and 4.3.4-8.

Compiling this code snippet:

template <int& field>
struct Foo
{
  static  int
  bar ()
  {  return field;  }
};

template <bool>
struct X
{
  static  int  x;
  typedef  Foo <x>  foo;
};

// This makes first statement in main() compile, but not the second...
template <>
int  X <false>::x = 0;

int
main ()
{
  X <false>::x;
  X <false>::foo::bar ();
}

with 'g++ test.cpp -o test' gives the following error on linking stage:

/tmp/ccuo8N2e.o: In function `_ZN3FooILZN1XIXT_EE1xEEE3barEv':
test.cpp:(.text._ZN3FooILZN1XIXT_EE1xEEE3barEv[_ZN3FooILZN1XIXT_EE1xEEE3barEv]+0x4):
undefined reference to `_ZN1XIXT_EE1xE'

This is a regression: it works with 4.1, but doesn't with 4.3 or 4.4.  Didn't
test 4.2.


-- 
           Summary: different access to templated structure static field
                    give different results
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pogonyshev at gmx dot net
 GCC build triplet: i486-pc-linux-gnu
  GCC host triplet: i486-pc-linux-gnu
GCC target triplet: i486-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43368