https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93842
kuzniar95 at o2 dot pl changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #7 from kuzniar95 at o2 dot pl ---
Oh, actually I'm reopening as it still incorrectly accepts code it shouldn't. I
made a wrong assumption because I incorrectly tested that using not_odr_use
function before.
So, once more:
-----------------------
void not_odr_use(char const);
void odr_use(char const&);
int main()
{
constexpr char ch = '=';
[] { not_odr_use(ch); }; // compiles, OK
[] { odr_use(ch); }; // doesn't compile, OK
[](auto) { not_odr_use(ch); }; // compiles, OK
[](auto) { odr_use(ch); }; // compiles, NOT OK (GCC should require lambda
capture)
}
-----------------------
Previous investigation on "-Wunused" is correct, i.e. if the user doesn't
instantiate a generic lambda's function call operator, it should be a warning.
