https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100992
Tomasz Kamiński <tkaminsk at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkaminsk at gcc dot gnu.org
--- Comment #4 from Tomasz Kamiński <tkaminsk at gcc dot gnu.org> ---
The is_contructible_v and tuple construction both fail consistently since GCC
11.4:
#include <tuple>
struct F {
F() { }
F(const std::tuple<F>& foo) {}
};
static_assert(std::is_constructible_v<F, const std::tuple<F>&>);
static_assert(std::is_constructible_v<F, const std::tuple<std::tuple<F>>&>); //
fails
int main() {
F f1{std::tuple{F{}}};
auto tup = std::tuple{std::tuple{f1}}; // this is tuple<F> not
tuple<tuple<F>>
static_assert(std::is_same_v<decltype(tup), std::tuple<F>>);
F f2{tup};
const std::tuple<std::tuple<F>> ttup{std::tuple<F>(f1)};
F f3{ttup}; // also fails
}
Link: https://godbolt.org/z/jWqY7bWf3
