Function cairo_sys::cairo_font_face_reference 
source · pub unsafe extern "C" fn cairo_font_face_reference(
    font_face: *mut cairo_font_face_t
) -> *mut cairo_font_face_tpub unsafe extern "C" fn cairo_font_face_reference(
    font_face: *mut cairo_font_face_t
) -> *mut cairo_font_face_t