https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69725
--- Comment #3 from Martin Sebor ---
I wondered if the system ISL (isl-0.14-4.fc23) was being picked up instead of
the one in my tree (isl-0.15), or some combination of both at different times.
So I tried --with-isl thinking that might be enough
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69725
--- Comment #2 from Martin Sebor ---
I used the download_prerequistes script to download isl-0.15. I have
gmp-4.3.2, mpc-0.8.1, and mpfr-2.4.2. I didn't know that in-tree ISL wasn't
being tested. Let me see if I get farther by either disabling
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69725
--- Comment #1 from Richard Biener ---
Not sure if LTO bootstrap with in-tree ISL is properly tested. Which ISL
version
did you choose? Anything suspicious in closure.c?
