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

[vries at gcc dot gnu.org]

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

            Bug ID: 70185
           Summary: fdump-tree-all-graph produces invalid dot files
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

Using fdump-tree-all-graph produces invalid dot files:
...
$ rm *.c.* ; gcc test.c -O2 -S -fdump-tree-all-graph  
$ for f in *.dot; do dot -Tpdf $f -o dot.pdf; done
Warning: test.c.006t.omplower.dot: syntax error in line 1 near '}'
Warning: test.c.007t.lower.dot: syntax error in line 1 near '}'
Warning: test.c.010t.eh.dot: syntax error in line 1 near '}'
Warning: test.c.292t.statistics.dot: syntax error in line 1 near '}'
$ cat test.c.006t.omplower.dot
}
$
...