- const CharacterIndex previousLogicalCursorIndex = *(bidirectionalLineInfo->visualToLogicalMap + previousVisualCursorIndex - bidirectionalLineInfo->characterRun.characterIndex) + bidirectionalLineInfo->characterRun.characterIndex;
- const CharacterIndex currentLogicalCursorIndex = *(bidirectionalLineInfo->visualToLogicalMap + visualCursorIndex - bidirectionalLineInfo->characterRun.characterIndex) + bidirectionalLineInfo->characterRun.characterIndex;
+ const CharacterIndex previousLogicalCursorIndex = *(bidirectionalLineInfo->visualToLogicalMap + static_cast<std::size_t>(previousVisualCursorIndex - bidirectionalLineInfo->characterRun.characterIndex)) + bidirectionalLineInfo->characterRun.characterIndex;
+ const CharacterIndex currentLogicalCursorIndex = *(bidirectionalLineInfo->visualToLogicalMap + static_cast<std::size_t>(visualCursorIndex - bidirectionalLineInfo->characterRun.characterIndex)) + bidirectionalLineInfo->characterRun.characterIndex;