[Bug c++/85171] generic lambda becomes recursive

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85171

--- Comment #1 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Created attachment 43823
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43823&action=edit
member fn example

The second example shows the case inside a member fn, with ok and bad cases. 
X::ok calls X::operator(), X::bad recurses