https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87566
--- Comment #10 from Antony Lewis <antony at cosmologist dot info> --- In the latest 9.0 trunk I still see what looks like a similar ICE error (though I have not tried to isolate it again). See https://travis-ci.org/cmbant/forutils/builds/483365115 when running test script in https://github.com/cmbant/forutils/tree/gcc_bug1 . (code is reported invalid in gcc6, but SEG faults in 7,8,9).
