https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103518
--- Comment #2 from Egor Pugin <egor.pugin at gmail dot com> --- Callgrind https://www.dropbox.com/s/3ro2ulrfp6jma8f/callgrind.out.39995?dl=1 Interestingly, clang++-13 hangs for 50 s. while gcc for 150 s. Probably, clang also does something wrong here.