https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102544
--- Comment #8 from Andrew Stubbs <ams at gcc dot gnu.org> --- Did you get the C version to return anything other than "-1"? (The expected result is "2".) I'm still trying to determine if the device is compatible, but the mapping problem looks like a different issue. Your code works fine on my device using a somewhat more recent GCC build. (I can't install that exact toolchain right now.)
