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The method takes a pointer, so the code shouldn't crash when passed a nullptr. QFileInfoGatherer::getInfo() still needs to generate a descriptive string for the file, so we refactor QAbstractFileIconProvider::type() to put the implementation into a reusable static function QAbstractFileIconProviderPrivate::getFileType(const QFileInfo &info). This unfortunately involves constructing a QMimeDatabase on the fly, but the docs say that is fine. Drive-by change: use nullptr instead of `0` for pointers. Pick-to: 6.6 6.5 Fixes: QTBUG-99178 Change-Id: Ia32ea0a26701d593e74fbecced7be8d9e0aa0f52 Reviewed-by: Ahmad Samir <a.samirh78@gmail.com> Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io> (cherry picked from commit 2a8b27bf6c523de6f3f466f8062279c093940a60) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>