if err == nil {
		return nil
	}
	var ae AlertError
	if errors.As(err, &ae) {
		return err
	}
	var a alert
	if !errors.As(err, &a) {
		a = alertInternalError
	}
	// Return an error wrapping the original error and an AlertError.
	// Truncate the text of the alert to 0 characters.
	return fmt.Errorf("%w%.0w", err, AlertError(a))
}

func (c *Conn) quicReadHandshakeBytes(n int) error {

	Addrs(intf *net.Interface) ([]net.Addr, error)
	Interfaces() ([]net.Interface, error)
}

// networkInterface implements the networkInterfacer interface for production code, just
// wrapping the underlying net library function calls.
type networkInterface struct{}

func (_ networkInterface) InterfaceByName(intfName string) (*net.Interface, error) {
	return net.InterfaceByName(intfName)
}

	{"`", "strconv.ParseFloat: parsing \"`\": failed"},
	{"1\x00.2", `strconv.ParseFloat: parsing "1\x00.2": failed`},
}

func init() {
	// The parse routines return NumErrors wrapping
	// the error and the string. Convert the tables above.
	for i := range parseUint64Tests {
		test := &parseUint64Tests[i]
		if test.err != nil {
			test.err = &NumError{"ParseUint", test.in, test.err}
		}
	}

	// However, if the os.Stderr (or os.Stdout) file descriptors are
	// passed on, the hanging adb subprocess will hold them open and
	// go test will hang forever.
	//
	// Avoid that by wrapping stderr, breaking the short circuit and
	// forcing cmd.Run to use another pipe and goroutine to pass
	// along stderr from adb.
	cmd.Stderr = struct{ io.Writer }{os.Stderr}
	err := cmd.Run()

            #include HEADER(FUNC_NAME, (), 3)
        """

        expect:
        resolve() == [header]
    }

    def "can produce a macro function call by concatenating name and wrapping args in parens"() {
        given:
        sourceFile << """
            #define FUNC(X, Y) X
            #define HEADER_(X, Y) X ## Y
            #define HEADER(X, Y, Z) HEADER_(X, (Y, Z))

func NewMatch(pattern string) *Match {
	return &Match{pattern: pattern}
}

// Pattern returns the pattern to be matched.
func (m *Match) Pattern() string { return m.pattern }

// AddError appends a MatchError wrapping err to m.Errs.
func (m *Match) AddError(err error) {
	m.Errs = append(m.Errs, &MatchError{Match: m, Err: err})
}

// IsLiteral reports whether the pattern is free of wildcards and meta-patterns.
//

   * invokeAll}, and {@code invokeAny} methods, so any special handling of tasks must be implemented
   * in the delegate's {@code execute} method or by wrapping the returned {@code
   * ListeningExecutorService}.
   *
   * <p>If the delegate executor was already an instance of {@code ListeningExecutorService}, it is

    tf_executor.island {
      "tf.NoOp"() : () -> ()
      tf_executor.yield
    }
    tf_executor.fetch
  }
  func.return
}

// -----

// Test that functions' graph op must have only island ops wrapping a single op
// and a single fetch op, otherwise, the pass will signal failure.

func.func @graph_multi_op_island() {
  tf_executor.graph {

            val innerSourceData = sourceData(inner, 0)
            return UnsupportedConstruct(outerSourceData, innerSourceData, feature)
        } // TODO: hack, due to script wrapping
    }

    fun script(originalTree: LightTree): LanguageTreeResult {
        val tree = CachingLightTree(originalTree)
        val packageNode = packageNode(tree)
        val importNodes = importNodes(tree)

    const ParamGeneratorInterface<T>* const base_;
    typename ContainerType::const_iterator iterator_;
    // A cached value of *iterator_. We keep it here to allow access by
    // pointer in the wrapping iterator's operator->().
    // value_ needs to be mutable to be accessed in Current().
    // Use of scoped_ptr helps manage cached value's lifetime,
    // which is bound by the lifespan of the iterator itself.