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35 lines
1.3 KiB
Diff
35 lines
1.3 KiB
Diff
# HG changeset patch
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# User Matt Woodrow <mwoodrow@mozilla.com>
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# Date 1408674084 -43200
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# Fri Aug 22 14:21:24 2014 +1200
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# Node ID 2b819b882c3b26c02d821e8d713591a9b56f1728
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# Parent ffd1fc7e7d5a85e4823b5f2067b4a24d358a0e41
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Bug 1050788 - Fix cairo clip path region construction when the first path generates no traps. r=jrmuizel
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diff --git a/gfx/cairo/cairo/src/cairo-clip.c b/gfx/cairo/cairo/src/cairo-clip.c
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--- a/gfx/cairo/cairo/src/cairo-clip.c
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+++ b/gfx/cairo/cairo/src/cairo-clip.c
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@@ -590,16 +590,22 @@ static cairo_int_status_t
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status = _cairo_path_fixed_fill_rectilinear_to_traps (&clip_path->path,
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clip_path->fill_rule,
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&traps);
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if (unlikely (_cairo_status_is_error (status)))
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return status;
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if (status == CAIRO_INT_STATUS_UNSUPPORTED)
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goto UNSUPPORTED;
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+ if (unlikely (traps.num_traps == 0)) {
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+ clip_path->region = cairo_region_create ();
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+ clip_path->flags |= CAIRO_CLIP_PATH_HAS_REGION;
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+ return CAIRO_STATUS_SUCCESS;
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+ }
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+
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if (traps.num_traps > ARRAY_LENGTH (stack_boxes)) {
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boxes = _cairo_malloc_ab (traps.num_traps, sizeof (cairo_box_t));
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if (unlikely (boxes == NULL))
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return _cairo_error (CAIRO_STATUS_NO_MEMORY);
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}
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for (n = 0; n < traps.num_traps; n++) {
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boxes[n].p1.x = traps.traps[n].left.p1.x;
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