[Bug target/118329] avr defines __int24 but doesn't define __GLIBCXX_TYPE_INT_N_0

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118329

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think I pointed this out when fixing a related ICE with LTO.