[Bug target/118446] __builtin_iseqsig does not raise exception when supplied with NaN on Cortex-M at -O1 or higher

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118446

--- Comment #3 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Patch proposal:
https://gcc.gnu.org/pipermail/gcc-patches/2025-March/677494.html