[Bug libstdc++/108221] Building cross compiler for H8 family fails at libstdc++-v3/src/c++20/tzdb.cc

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108221

--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The std::span default constructor that's causing problems has been there for a
few years, but nobody pointed out it didn't work for this mode. For a target to
remain usable we need test results and regular fixes. Otherwise things stay
broken for years and then we have to fix dozens of things all at once. This
target has bitrotted quite badly.