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c++/3793: template class rejected as template arg to a template member
- To: gcc-gnats at gcc dot gnu dot org
- Subject: c++/3793: template class rejected as template arg to a template member
- From: sts at ica1 dot uni-stuttgart dot de
- Date: 24 Jul 2001 16:37:47 -0000
- Reply-To: sts at ica1 dot uni-stuttgart dot de
>Number: 3793
>Category: c++
>Synopsis: template class rejected as template arg to a template member
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Tue Jul 24 09:46:02 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: Stefan Schwarzer
>Release: gcc-3.0
>Organization:
>Environment:
alpha osf5.0, x86-linux
>Description:
The following segment attempts to invoke a template member
of a base class with an explicit template
argument. g++-3.0 produces a syntax error (which btw. is
slightly different, if the body of the function 'worker'
is defined outside class B). IMHO and that of edg frontends,
the code is legal.
18:35 margay_sts:~/bugs/gnu> uname -a
OSF1 margay.ica1.uni-stuttgart.de V5.0 910 alpha
18:35 margay_sts:~/bugs/gnu> g++ -v
Reading specs from /local/gcc-3.0/lib/gcc-lib/alphaev56-dec-osf4.0f/3.0/specs
Configured with: /share/src/gcc-3.0/configure --prefix=/local/gcc-3.0 --host=alphaev56-dec-osf4.0f --target=alphaev56-dec-osf4.0f
Thread model: single
gcc version 3.0
18:35 margay_sts:~/bugs/gnu> g++ tt.cc
tt.cc: In member function `virtual double B<T>::worker()':
tt.cc:16: parse error before `;' token
18:35 margay_sts:~/bugs/gnu> cat tt.cc
template<class T>
struct A{
template<class U>
double helper(){ return 42.; }
};
template<class T>
struct B : A<T> {
virtual double worker()
{
return A<T>::helper< B >();
}
};
int main(){
B<double> b;
b.worker();
}
>How-To-Repeat:
try to compile the code given in the project description
on Linux or Alpha platforms
>Fix:
I wish I knew...
>Release-Note:
>Audit-Trail:
>Unformatted: