[Bug tree-optimization/70700] ICE using -fdump-tree-all-graph option

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70700

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(gdb) p varmap.length()
$5 = 13
(gdb) p n
$6 = 21

so yeah - we're out-of-range.