https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78213
ktkachov at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dmalcolm at gcc dot gnu.org --- Comment #4 from ktkachov at gcc dot gnu.org --- Curiously the -fself-test succeeds during build and the command -fself-test -x c /dev/null -S works as expected. Perhaps it has something to do with whether/how much of the rtl is initialised at the point the tests are run.