[Bug fortran/71688] [4.9/5/6/7 Regression] ICE in analyze, at cgraphunit.c:632 with -fcoarray=lib

[jamborm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71688

--- Comment #4 from Martin Jambor <jamborm at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #3)
> The change occurred between revisions r201266 (2013-07-26, OK) and r201631
> (2013-08-09, ICE), likely r201526 (pr57987).

Indeed.  But I believe the problem is that lower_nested_functions does
not work properly.  At the time of calling unnest_nesting_tree, the
nesting tree seems not to contain one nested function while another
one is present twice.