[Bug c++/61472] added default-argument in later declaration of function template not caught

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61472

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(Please set the version field to make it clear you're not reporting bugs
against GCC 4.4 or something ancient and unmaintained)

This is very likely to be the same issue as PR 61471