[Bug fortran/71759] [7 Regression] ICE in enforce_single_undo_checkpoint, at fortran/symbol.c:3478

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71759

--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Confirmed on current trunk.

I also see the same ICE with gcc version 4.9.0 20140411 (experimental) r209304,
5.0.0 20150219 (experimental) r220825, and 6.0.0 20160415 (experimental)
r235027. I don't see the ICE with compilers configured with
--enable-checking=release.