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Bug 689087 - Relax cmap format 4 checking slightly to allow Baskerville on Lion to work; r=jdaggett

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This commit is contained in:
Jonathan Kew 2011-11-17 19:11:37 +01:00
parent 7131fda8c1
commit 448a234431
1 changed files with 4 additions and 2 deletions
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6
gfx/thebes/gfxFontUtils.cpp
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@ -361,8 +361,10 @@ gfxFontUtils::ReadCMAPTableFormat4(const PRUint8 *aBuf, PRUint32 aLength,
const PRUint16 idRangeOffset = ReadShortAt16(idRangeOffsets, i);
// sanity-check range
NS_ENSURE_TRUE((startCount > prevEndCount || i == 0 || startCount == 0xFFFF) &&
startCount <= endCount,
// This permits ranges to overlap by 1 character, which is strictly
// incorrect but occurs in Baskerville on OS X 10.7 (see bug 689087),
// and appears to be harmless in practice
NS_ENSURE_TRUE(startCount >= prevEndCount && startCount <= endCount,
NS_ERROR_GFX_CMAP_MALFORMED);
prevEndCount = endCount;