[Bug c++/61648] g++ accepts literal operator friends for non-template classes but not for *template* classes

[3dw4rd at verizon dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61648

Ed Smith-Rowland <3dw4rd at verizon dot net> changed:

           What    |Removed                     |Added
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                 CC|                            |3dw4rd at verizon dot net

--- Comment #1 from Ed Smith-Rowland <3dw4rd at verizon dot net> ---
Putting a valid numeric literal operator template works:

#include <cstddef>
struct B{};

template<char... Str>
  B operator"" _c() { return B(); }

template<typename T>
class C
{
  template<char...>
    friend B operator"" _c();
};

int main() { return 0; }