https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96101
--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> --- (In reply to Martin Liška from comment #1) > Started with r6-3986-g38217d3ee7c6e1fe. Hi Martin, As Gerhardt says, it compiles OK with version 7.4.1 20191027. The patch you reference is dated 2015-10-18! Cheers Paul