https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123150
--- Comment #2 from Sam James <sjames at gcc dot gnu.org> --- (In reply to Sam James from comment #1) > I've only seen this on a znver4 machine so presumably avx512 related. My > znver2 machine bootstrapped fine. While this is true (will figure out why and share if interesting), e.g. stripping -march=native and passing -march=x86-64-v2 for the original report also ICEs: ``` /var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/./prev-gcc/xgcc -B/var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/./prev-gcc/ -B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem /usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include -fchecking=1 -c -m64 -O3 -fno-semantic-interposition -mtls-dialect=gnu2 -fdiagnostics-color=always -Wa,-O2 -Wa,-mtune=znver4 -g1 -pipe -Werror=strict-aliasing -Werror=lto-type-mismatch -Werror=odr -fdiagnostics-color=always -fdiagnostics-urls=never --param=ggc-min-expand=150 -ggdb3 -fchecking=1 -fcf-protection -gnatpg -gnata -W -Wall -fPIC -nostdinc -I- -I. -Iada/generated -Iada -I/var/tmp/portage/sys-devel/gcc-16.0.9999/work/gcc-16.0.9999/gcc/ada -Iada/libgnat -I/var/tmp/portage/sys-devel/gcc-16.0.9999/work/gcc-16.0.9999/gcc/ada/libgnat -Iada/gcc-interface -I/var/tmp/portage/sys-devel/gcc-16.0.9999/work/gcc-16.0.9999/gcc/ada/gcc-interface /var/tmp/portage/sys-devel/gcc-16.0.9999/work/gcc-16.0.9999/gcc/ada/exp_dbug.adb -o ada/exp_dbug.o -march=x86-64-v2 ```
