https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97358
--- Comment #8 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Also, I wonder what the final value of copy_counter should be in the below
testcase (assuming it's valid):
static int copy_counter;
struct S {
S() = default;
S(const S&) { ++copy_counter; }
};
template <typename... Ts>
void foo(Ts...) { }
template <typename... Ts>
void bar(Ts... x) {
foo([x...] { return x; }...);
}
int main() {
bar(S{}, S{}, S{});
}
According to Clang it's 9, FWIW.
