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List:       gcc-bugs
Subject:    [Bug c++/39328]  New: ambiguous implicit declaration of template friend function
From:       "mrhelt at yahoo dot de" <gcc-bugzilla () gcc ! gnu ! org>
Date:       2009-02-28 23:48:53
Message-ID: bug-39328-17375 () http ! gcc ! gnu ! org/bugzilla/
[Download RAW message or body]

The following code generates two different, ambiguous declarations of foo. I
guess this is regression, as other compilers accept the code.
I am using gcc 4-3-3


template<class A,template<class>class B> void foo(B<A>)
{
}
template<class> class bar
{
    template<class A,template<class>class B> friend void foo(B<A>);
};

int main(int num_arguments, char* arguments[])
{
    foo(bar<int>());

/*error: call of overloaded 'foo(bar<int>)' is ambiguous
n:298: note: candidates are: void foo(B<A>) [with A = int, B = bar]
n:303: note:                 void foo(B<A>) [with A = int, B = bar,
<template-parameter-1-1> = int]*/
}


-- 
           Summary: ambiguous implicit declaration of template friend
                    function
           Product: gcc
           Version: 4.3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mrhelt at yahoo dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39328

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