https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66343
marc at kdab dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |marc at kdab dot com --- Comment #2 from marc at kdab dot com --- Confirmed that GCC 6.0.0 trunk, too, fails with identical errors when trying to compile Qt 5 with PCH. Only on some files, though. 213 object files get created for QtCore, 50 fail.