c++/9419: inherited member in template doesnt work

c++/9419: inherited member in template doesnt work

[rassahah]

>Number:         9419
>Category:       c++
>Synopsis:       inherited member in template doesnt work
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jan 23 16:16:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     Rasmus Hahn
>Release:        gcc version 3.4 20030123
>Organization:
>Environment:
$ g++ -v
Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.4/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-threads --enable-languages=c,c++,objc
Thread model: posix
gcc version 3.4 20030123 (experimental)
>Description:
g++ does not find inherited member in template class. if specifiing member with explicitely with
`this->' it works. This bug seems new in this version of g++; the version from a few weeks ago
worked.
output from how-to-repeat:
$ g++ x.cc
x.cc: In member function `void B<X>::foo()':
x.cc:9: error: `a' has not been declared
$ 
>How-To-Repeat:
template <class X>
struct A {
  int a;
};

template <class X>
struct B :public A <X> {
  void foo () {
    a = 3; // with `this->a = 3' it works
  }
};
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:

Re: c++/9419: inherited member in template doesnt work

[bangerth]

Synopsis: inherited member in template doesnt work

State-Changed-From-To: open->closed
State-Changed-By: bangerth
State-Changed-When: Thu Jan 23 16:21:19 2003
State-Changed-Why:
    That's how C++ is supposed to work. Name loopup inside
    templates does not look into base classes, and since your
    variable's name is not obviously template type dependent,
    you need to tell the compiler that it depends on the
    template type, for example by using this->

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9419