Function g_markup_parse_context_get_attribute_position 

pub unsafe extern "C" fn g_markup_parse_context_get_attribute_position(
    context: *mut GMarkupParseContext,
    attr: c_uint,
    start_lines: *mut size_t,
    start_chars: *mut size_t,
    start_offset: *mut size_t,
    end_lines: *mut size_t,
    end_chars: *mut size_t,
    end_offset: *mut size_t,
)

Available on crate feature v2_90 only.