https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78267
--- Comment #38 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78267 > > --- Comment #35 from Jack Howarth <howarth.at.gcc at gmail dot com> --- > Created attachment 40043 > --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40043&action=edit > stock /usr/include/os/trace.h from OS X 10.11.6 Thanks. I've now extracted /usr/include from the latest Command Line Tools for Xcode versions supporting 10.7 - 10.12. Rainer