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Fix the endoffset of the last glyph when it's followed by a null offset in the loca table

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It fixes #17671.
This commit is contained in:
Calixte Denizet 2024-02-14 15:12:11 +01:00
parent e60329cea1
commit fcad3718f0
4 changed files with 16 additions and 0 deletions
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8
src/core/fonts.js
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@ -2117,6 +2117,14 @@ class Font {
break;
}
// If the last offset is 0 in the loca table then we can't compute the
// endOffset for the last glyph. So in such a case we set the endOffset
// to the end of the data (fixes issue #17671).
const last = locaEntries.at(-2);
if (last.offset !== 0 && last.endOffset === 0) {
last.endOffset = oldGlyfDataLength;
}
const missingGlyphs = Object.create(null);
let writeOffset = 0;
itemEncode(locaData, 0, writeOffset);