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avoid crash with incomplete font definitions ( IcoMoon )

This commit is contained in:
Uwe Rathmann 2025-02-10 14:38:18 +01:00
parent 5c95cbd64a
commit f96dc71b49
1 changed files with 10 additions and 7 deletions
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17
src/graphic/QskGlyphTable.cpp
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@ -50,15 +50,18 @@ namespace PostTableParser
const auto from = reinterpret_cast< const uint8_t* >( glyphData + nglyphs ); const auto from = reinterpret_cast< const uint8_t* >( glyphData + nglyphs );
const auto to = reinterpret_cast< const uint8_t* >( blob.data() + blob.size() ); const auto to = reinterpret_cast< const uint8_t* >( blob.data() + blob.size() );
for ( auto s = from; s < to; s += *s + 1 ) if ( to > from )
strings += s;
for ( int i = 0; i < nglyphs; i++ )
{ {
const int idx = qFromBigEndian( glyphData[i] ) - 258; for ( auto s = from; s < to; s += *s + 1 )
strings += s;
if ( idx >= 0 ) for ( int i = 0; i < nglyphs; i++ )
names.insert( toString( strings[idx] ), i ); {
const int idx = qFromBigEndian( glyphData[i] ) - 258;
if ( idx >= 0 && idx < strings.size() )
names.insert( toString( strings[idx] ), i );
}
} }
} }