strange Core Text Font crash

CoreText TBMPDataCache::GetDataForCharacter(unsigned int) const + 64

1 CoreText TBMPDataCache::GetDataForCharacter(unsigned int) const + 24

2 CoreText TUnicodeEncoder::Encode(__CTFont const*, TCharStreamIterator&, CFRange, unsigned short*, double*, unsigned int*, double*, bool) + 612

3 CoreText TGlyphEncoder::RunUnicodeEncoderRecursively(unsigned int, TCFRef<CTRun*>&&, __CTFont const*, CFRange, TInlineVector<long, 30ul>&, TGlyphEncoder::Fallbacks, TFontCascade const*, __CFString const*, TGlyphEncoder::ClusterMatching, bool) + 484

4 CoreText TGlyphEncoder::EncodeChars(CFRange, TAttributes const&, TGlyphEncoder::Fallbacks) + 1152

5 CoreText TTypesetterAttrString::Initialize(__CFAttributedString const*) + 388

6 CoreText TTypesetterAttrString::TTypesetterAttrString(__CFAttributedString const*, __CFDictionary const*) + 160

7 CoreText _CTLineCreateWithAttributedString + 132

8 UIFoundation ___NSCoreTypesetterCreateBaseLineFromAttributedString + 344

9 UIFoundation -[NSCoreTypesetter _stringDrawingCoreTextEngineWithOriginalString:rect:padding:graphicsContext:forceClipping:attributes:stringDrawingOptions:drawingContext:stringDrawingInterface:] + 2164