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[OT] Don't crash if no GDEF available

This commit is contained in:
Behdad Esfahbod 2012-07-30 19:37:44 -04:00
parent 3dcbdc2125
commit 300c7307eb
1 changed files with 5 additions and 3 deletions
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8
src/hb-ot-layout-gsubgpos-private.hh
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@ -183,8 +183,8 @@ struct hb_apply_context_t
unsigned int lookup_props;
unsigned int property; /* propety of first glyph */
unsigned int debug_depth;
bool has_glyph_classes;
const GDEF &gdef;
bool has_glyph_classes;
hb_apply_context_t (hb_font_t *font_,
@ -196,8 +196,10 @@ struct hb_apply_context_t
lookup_mask (lookup_mask_),
nesting_level_left (MAX_NESTING_LEVEL),
lookup_props (0), property (0), debug_depth (0),
has_glyph_classes (hb_ot_layout_has_glyph_classes (face_)),
gdef (*hb_ot_layout_from_face (face_)->gdef /* XXX Unsafe dereference */) {}
gdef (hb_ot_layout_from_face (face_) &&
!HB_SHAPER_DATA_IS_INVALID (hb_ot_layout_from_face (face_)) ?
*hb_ot_layout_from_face (face_)->gdef : Null(GDEF)),
has_glyph_classes (gdef.has_glyph_classes ()) {}
void set_lookup (const Lookup &l) {
lookup_props = l.get_props ();