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Validate font height metrics to prevent division by zero #221

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Validate font height metrics to prevent division by zero #221

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16 changes: 16 additions & 0 deletions Core/Libraries/Source/WWVegas/WW3D2/render2dsentence.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -647,6 +647,14 @@ Render2DSentenceClass::Allocate_New_Surface (const WCHAR *text, bool justCalcExt

int char_height = Font->Get_Char_Height ();

//
// Validate char_height to prevent division by zero
// In rare cases with corrupted fonts, this can be 0 or negative
//
if (char_height <= 0) {
char_height = 1; // Use minimum safe value
}

//
// Find the best texture size for the remaining text
//
Expand Down Expand Up @@ -1631,6 +1639,14 @@ FontCharsClass::Create_GDI_Font (const char *font_name)
CharOverhang = 0;
}

//
// Validate CharHeight to prevent division by zero
// In rare cases with corrupted fonts, tmHeight can be 0 or negative
//
if (CharHeight <= 0) {
CharHeight = 1; // Use minimum safe value
}

return GDIFont != NULL && GDIBitmap != NULL;
}

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