https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93279
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Further reduced: template <typename T> struct B { using f = int; }; template <typename T, int N> struct E { template <typename U, typename B<E>::f = 0> void operator*(U l) { [l](T m) { m * l; }; } }; int main () { E<E<float, 4>, 1> n; n * 4.f; }