https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59655
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Last reconfirmed|2018-05-03 00:00:00 |2019-03-08
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
A rejects-valid case from Bug 89633:
The following excerpt builds fine on MSVC, ICC and clang:
struct S {
template <typename Function>
void frob(const Function&);
struct T {
T(S* s) {
s->frob([]() {});
}
};
};
but GCC fails with
<source>:3:8: error: 'void S::frob(const Function&) [with Function =
S::T::T(S*)::<lambda()>]', declared using local type 'const
S::T::T(S*)::<lambda()>', is used but never defined [-fpermissive]
3 | void frob(const Function&);
| ^~~~
Passing anything other than a lambda to S::frob(), or making it take a function
pointer rather than a template argument, works.
