https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92385
--- Comment #1 from Carl <edquist at cs dot wisc.edu> --- Created attachment 47179 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47179&action=edit original source file with bad compilation performance Note the brace member initialization in the constructor: "item_array() : a{} {}"
