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servo: text: Don't crash on kerning/ligatures

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Source-Repo: https://github.com/servo/servo
Source-Revision: 4fd486970b57de23b5fc5767576f2d2db2e1bd6b
This commit is contained in:
Patrick Walton 2012-11-15 20:47:13 -08:00
parent 81acf17a77
commit 2cc36bc57c
1 changed files with 8 additions and 1 deletions
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9
servo/src/servo-gfx/text/glyph.rs
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@ -329,7 +329,14 @@ impl DetailedGlyphStore {
fn get_detailed_glyphs_for_entry(&self, entry_offset: uint, count: u16) -> &[DetailedGlyph] {
debug!("Requesting detailed glyphs[n=%u] for entry[off=%u]", count as uint, entry_offset);
assert count > 0;
// FIXME: Is this right? --pcwalton
if count == 0 {
let result = do self.detail_buffer.borrow |glyphs: &[DetailedGlyph]| {
vec::view(glyphs, 0, 0)
};
return result;
}
assert (count as uint) <= self.detail_buffer.len();
self.ensure_sorted();