https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90523
--- Comment #3 from krux ---
Possible, gcc was built with --disable-multilib --with-arch=armv7e-m
--with-mode=thumb --with-float=soft.
And if I replace -mcpu=cortex-m4 with -march=armv7e-m in my test command
there's no crash.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90523
--- Comment #2 from Alexander Monakov ---
See also PR 87076, which has a reduced testcase and some root-cause analysis
(likely a duplicate).
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90523
--- Comment #1 from krux ---
So this one must be null:
https://github.com/gcc-mirror/gcc/blob/65af043/gcc/config/arm/arm.c#L3148
