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* c++/10845: `template method` not matched in template class
@ 2003-05-18 17:56 have
0 siblings, 0 replies; only message in thread
From: have @ 2003-05-18 17:56 UTC (permalink / raw)
To: gcc-gnats
>Number: 10845
>Category: c++
>Synopsis: `template method` not matched in template class
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sun May 18 17:56:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: have@ann.jussieu.fr
>Release: g++-3.2, 3.3
>Organization:
>Environment:
Linux i686
>Description:
error: no matching function for call to `A<int>::f(int&, A<int>::SubA<int>&)'.
In what follows, words written as _underscored_ mean that without any _underscored_ hypothesis, bug does not occur.
Let us consider a method f (with _two_ templates arguments) of a _template_ class A.
The first argument is given by a _template T1_.
The second argument is given as a _template_ sub class of A (SubA<L>) and the second template typename of f is given for matching L.
Moreover, there exists (at least) another template method in A which has the same argument type than the second one of f.
Then f cannot be found when it is called.
>How-To-Repeat:
Try to compile this code
---8<------------
template<typename T>
struct A {
template<typename L> struct SubA { };
template<typename T1,typename L> void f(T1 & t1, SubA<L> & t2) { }
template<typename U> void g(SubA<U> & suba) { }
template<typename U> void h(SubA<U> & suba) { }
};
int main(void) {
int i;
A<int> a;
A<int>::SubA<int> suba;
a.f(i,suba);
a.g(suba);
a.h(suba);
}
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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