[Bug other/70185] fdump-tree-all-graph produces invalid dot files

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70185

--- Comment #4 from vries at gcc dot gnu.org ---
(In reply to vries from comment #3)
> stage1 approved (conditional on bootstrap/regtest):
> https://gcc.gnu.org/ml/gcc-patches/2016-03/msg00980.html

bootstrapped and reg-tested, no issues found.