gfx/cairo/17-active-edges-crash.patch

   1 diff --git a/gfx/cairo/cairo/src/cairo-polygon-intersect.c b/gfx/cairo/cairo/src/cairo-polygon-intersect.c
   2 --- a/gfx/cairo/cairo/src/cairo-polygon-intersect.c
   3 +++ b/gfx/cairo/cairo/src/cairo-polygon-intersect.c
   4 @@ -1167,7 +1167,7 @@ active_edges (cairo_bo_edge_t             *left,
   5             } while (1);
   6
   7             right = left->next;
   8 -           do {
   9 +           while (right) {
  10                 if unlikely ((right->deferred.other))
  11                     edges_end (right, top, polygon);
  12
  13 @@ -1179,7 +1179,9 @@ active_edges (cairo_bo_edge_t             *left,
  14                 }
  15
  16                 right = right->next;
  17 -           } while (1);
  18 +           };
  19 +           if (! right)
  20 +               return;
  21
  22             edges_start_or_continue (left, right, top, polygon);
  23