opts_set(opts.warn, WARN_EXTENSIONS, true);
opts_set(opts.warn, WARN_FIELD_REDECLARED, true);
opts_set(opts.warn, WARN_MISSING_RETURN_VALUES, true);
opts_set(opts.warn, WARN_EXTENSIONS, true);
opts_set(opts.warn, WARN_FIELD_REDECLARED, true);
opts_set(opts.warn, WARN_MISSING_RETURN_VALUES, true);