https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106466
--- Comment #6 from tt_1 <herrtimson at yahoo dot de> --- works with: gcc-10.3.0 gcc-10.3.1_p20211126 gcc-11.3.0 does not work with: gcc-10.4.0 the segfault is sort of spurious, its an about 1/5 to 1/7 chance for me. Is that something you can work with? and indeed these are two seperate segfaults, I got the -O1 from comment #4 now reproduced with -O2 as well