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[subset] Fail ClassDefFormat1 serialization if no space available 

Fixes https://crbug.com/oss-fuzz/21580
This commit is contained in:
Ebrahim Byagowi 2020-04-05 17:07:48 +04:30
parent c8cc1e378d
commit 57b7de032f
2 changed files with 1 additions and 1 deletions
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2
src/hb-ot-layout-common.hh
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@ -1651,7 +1651,7 @@ struct ClassDefFormat1
unsigned glyph_count = glyph_max - glyph_min + 1; unsigned glyph_count = glyph_max - glyph_min + 1;
startGlyph = glyph_min; startGlyph = glyph_min;
classValue.serialize (c, glyph_count); if (unlikely (!classValue.serialize (c, glyph_count))) return_trace (false);
for (const hb_pair_t<hb_codepoint_t, unsigned>& gid_klass_pair : + it) for (const hb_pair_t<hb_codepoint_t, unsigned>& gid_klass_pair : + it)
{ {
unsigned idx = gid_klass_pair.first - glyph_min; unsigned idx = gid_klass_pair.first - glyph_min;

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test/fuzzing/fonts/clusterfuzz-testcase-minimized-hb-subset-fuzzer-5704307501694976 Normal file
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