[Bug libstdc++/117966] [12/13/14/15 regression] constexpr std::span construction fails to compile with D_GLIBCXX_DEBUG

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117966

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The code compiles fine if the variable is in main(), just not as a global:

#include <array>
#include <span>
struct A {
    constexpr A(std::span<const unsigned char>) {}
};
int main() {
constexpr A val{std::array<unsigned char, 2>{0x11, 0x22}};
}