c++/10694: [3.3/3.4 regression] Befriending a function in a class that is only forward-declared
bangerth@dealii.org
bangerth@dealii.org
Fri May 9 01:25:00 GMT 2003
>Number: 10694
>Category: c++
>Synopsis: [3.3/3.4 regression] Befriending a function in a class that is only forward-declared
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri May 09 01:16:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: Wolfgang Bangerth
>Release: unknown-1.0
>Organization:
>Environment:
3.3 and present mainline
>Description:
Extracted from PR 7818 (but unrelated to the original
cause of that PR):
This used to work until 3.2.3, but fails in 3.3 and mainline:
--------------------------
template <class T> struct Y;
template <class S> class X {
template <class T> friend void Y<T>::member();
};
template <class T> struct Y {
void member() {
X<int>();
}
};
template class Y<int>;
-------------------------------
g/x> /home/bangerth/bin/gcc-3.2.3-pre/bin/c++ x.cc -W -Wall -c
g/x> /home/bangerth/bin/gcc-3.3-pre/bin/c++ -c x.cc -W -Wall
x.cc: In instantiation of `X<int>':
x.cc:9: instantiated from `void Y<T>::member() [with T = int]'
x.cc:13: instantiated from here
x.cc:4: error: prototype for `template<class T> void Y::member()' does not
match any in class `Y<T>'
x.cc:8: error: candidate is: void Y<T>::member()
g/x> /home/bangerth/bin/gcc-3.4-pre/bin/c++ -c x.cc -W -Wall
x.cc: In instantiation of `X<int>':
x.cc:9: instantiated from `void Y<T>::member() [with T = int]'
x.cc:13: instantiated from here
x.cc:4: error: prototype for `template<class T> void Y::member()' does not
match any in class `Y<T>'
x.cc:8: error: candidate is: void Y<T>::member()
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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