https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120266
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I suspect without a testcase it is going to be hard to reproduce this. We did have one accidently ABI change with -std=c++20 but I don't think that is the issue here. (see PR 120012; it is only fixed in GCC 15.2.0 and 16 [so far]).
