[HarfBuzz] harfbuzz: Branch 'master'
Behdad Esfahbod
behdad at kemper.freedesktop.org
Thu Oct 1 23:27:25 PDT 2015
src/hb-shape-plan.cc | 9 +++++++--
src/hb-shape.cc | 5 -----
2 files changed, 7 insertions(+), 7 deletions(-)
New commits:
commit 26ba4d1e1fb8949632fe08e6a7600badfba4f142
Author: Behdad Esfahbod <behdad at behdad.org>
Date: Fri Oct 2 07:25:52 2015 +0100
Fix segfault with empty buffer in hb_shape_plan_execute()
Move the empty-buffer check from hb_shape_full() to hb_shape_plan_execute().
Reported by Simon Cozens.
diff --git a/src/hb-shape-plan.cc b/src/hb-shape-plan.cc
index d2f293d..1d94c52 100644
--- a/src/hb-shape-plan.cc
+++ b/src/hb-shape-plan.cc
@@ -293,8 +293,13 @@ hb_shape_plan_execute (hb_shape_plan_t *shape_plan,
num_features,
shape_plan->shaper_func);
- if (unlikely (hb_object_is_inert (shape_plan) ||
- hb_object_is_inert (buffer)))
+ if (unlikely (!buffer->len))
+ return true;
+
+ assert (!hb_object_is_inert (buffer));
+ assert (buffer->content_type == HB_BUFFER_CONTENT_TYPE_UNICODE);
+
+ if (unlikely (hb_object_is_inert (shape_plan)))
return false;
assert (shape_plan->face_unsafe == font->face);
diff --git a/src/hb-shape.cc b/src/hb-shape.cc
index c06b9a4..8a98583 100644
--- a/src/hb-shape.cc
+++ b/src/hb-shape.cc
@@ -371,11 +371,6 @@ hb_shape_full (hb_font_t *font,
unsigned int num_features,
const char * const *shaper_list)
{
- if (unlikely (!buffer->len))
- return true;
-
- assert (buffer->content_type == HB_BUFFER_CONTENT_TYPE_UNICODE);
-
hb_shape_plan_t *shape_plan = hb_shape_plan_create_cached (font->face, &buffer->props, features, num_features, shaper_list);
hb_bool_t res = hb_shape_plan_execute (shape_plan, font, buffer, features, num_features);
hb_shape_plan_destroy (shape_plan);
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