https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80658
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> --- Like most ghost stories, this one is based on superstition and fantasy, not facts or science: https://www.reddit.com/r/programming/comments/69g8il/the_horror_in_the_standard_library/dhb2las/ No libstdc++ bug here, nothing to see, move along.