https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89179
--- Comment #18 from Iain Sandoe <iains at gcc dot gnu.org> --- I'm testing regularly on macOS 10.14 (darwin18) - which I assume is the version you meant? Also on 8.3 and 9.2 .. (the results are posted to @testresults). There was a PCH fixed (but that only manifested with -save-temps, so I don't expect it to be directly relevant). Right now, I can find no indication (or repeat) of this report - are you still seeing it anywhere?
