https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114099
--- Comment #1 from Sam James <sjames at gcc dot gnu.org> --- Created attachment 57526 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57526&action=edit reduced.ii Attached reduced version from tdr too. I can reproduce with `gcc -c PentaxDecompressor.cpp.ii -O3 -mavx -std=c++20`.