http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59294
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is not a bug (and GCC's bugzilla is not the right place for "is this
valid?" questions).
Name lookup FOR "conjugate" in class scope will find "Q::conjugate" not
"::conjugate". To refer to the global function you would need to qualify it as
::conjugate, but then the compiler thinks you are referring to Q<T>::conjugate
(the whitespace between the return type and the function identifier is not
significant to the compiler.)
The only way I can see to compile it is to declare the friend before the member
function (although I think that technically makes the code ill-formed, because
the standard says "A name N used in a class S shall refer to the same
declaration in its context and when re-evaluated in the completed scope of S.
No diagnostic is required for a violation of this rule."
