https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78172
--- Comment #1 from Ian Lance Taylor <ian at airs dot com> --- What does that whole line look like? It seems to be truncated in the output for some reason. Is _priv_t defined elsewhere in the file? That is, is there a line that starts with "type _priv_t "? If not, that will be a problem.