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[subset] Fix UBSAN issue in sbix

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ckitagawa 2020-01-23 11:09:15 -05:00 committed by Ebrahim Byagowi
parent acb4627eba
commit 7dc341fe74
2 changed files with 3 additions and 2 deletions
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5
src/hb-ot-color-sbix-table.hh
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@ -337,12 +337,13 @@ struct sbix
const void *dst_base, const void *dst_base,
unsigned int i, unsigned int i,
unsigned int sbix_len) const { unsigned int sbix_len) const {
// Push first so reverting doesn't fail.
c->serializer->push ();
if (strikes[i].is_null () || if (strikes[i].is_null () ||
sbix_len < (unsigned int) strikes[i]) sbix_len < (unsigned int) strikes[i])
return false; return false;
c->serializer->push ();
return (this+strikes[i]).subset (c, sbix_len - (unsigned int) strikes[i]); return (this+strikes[i]).subset (c, sbix_len - (unsigned int) strikes[i]);
} }

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test/fuzzing/fonts/clusterfuzz-testcase-minimized-hb-subset-fuzzer-5753173985984512 Normal file
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