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| author | Robin Watts <robin.watts@artifex.com> | 2013-09-30 16:45:15 +0100 |
|---|---|---|
| committer | Robin Watts <robin.watts@artifex.com> | 2013-09-30 17:21:43 +0100 |
| commit | a8aec7875aaf6c8d8d4ed37ce74705988b73e9c1 (patch) | |
| tree | bf936a0aad19b0d1a84da538f57be8e0c772c3e7 /source/fitz/draw-path.c | |
| parent | 9805dec32d8b7cb2fcc3251fdb670f5065e5f57e (diff) | |
| download | mupdf-a8aec7875aaf6c8d8d4ed37ce74705988b73e9c1.tar.xz | |
Bug 694526: Spot non-invertable matrices and bale before stroking
The bug fix added in the previous commit fails to work in this
case (hang-9527.pdf) because the matrix is not invertible and
hence the clipping rectangle ends up infinite. Spot this case
here and return early.
Diffstat (limited to 'source/fitz/draw-path.c')
| -rw-r--r-- | source/fitz/draw-path.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/source/fitz/draw-path.c b/source/fitz/draw-path.c index 6fa6191d..b33ea8b4 100644 --- a/source/fitz/draw-path.c +++ b/source/fitz/draw-path.c @@ -971,7 +971,8 @@ fz_flatten_dash_path(fz_gel *gel, fz_path *path, const fz_stroke_state *stroke, for (i = 0; i < stroke->dash_len; i++) phase_len += stroke->dash_list[i]; fz_gel_scissor(gel, &s.rect); - fz_invert_matrix(&inv, ctm); + if (fz_try_invert_matrix(&inv, ctm)) + return; fz_transform_rect(&s.rect, &inv); s.rect.x0 -= linewidth; s.rect.x1 += linewidth; |