Brian Avery <******@****.***> 1597180858 -0400

// compiledir

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Test cases for issue #15838, and related failures.
// Make sure the importer correctly sets up nodes for
// label decls, goto, continue, break, and fallthrough
// statements.

	C1 = R + I    // ADD(5,6)
	C2 = R - I    // SUB(5,-6)
	C3 = -(R + I) // ADD(5,6) NEG(-5,-6)
	C4 = -(R - I) // SUB(5,-6) NEG(-5,6)

	C5 = C1 + R // ADD(10,6)
	C6 = C1 + I // ADD(5,12)

	Ca = C5 + C6 // ADD(15,18)
	Cb = C5 - C6 // SUB(5,-6)

	Cc = C5 * C6 // MUL(-22,-150)
	Cd = C5 / C6 // DIV(0.721893,-0.532544)
	Ce = Cd * C6 // MUL(10,6) sb C5
)

func main() {

	var r complex64 = 5 + 0i
	if r != R {

00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000060  ef 16 5e cb e7 c4 2d a8  76 77 da 18 91 bd cb 78  |..^...-.vw.....x|
00000070  76 c5 5d 70 e5 ba 57 2a  1f 2b 11 3f 18 18 e6 1b  |v.]p..W*.+.?....|
00000080  36 78 c9 f1 5e 71 f1 71  f1 01 31 e6 37 fa 76 92  |6x..^q.q..1.7.v.|
00000090  15 03 03 00 30 00 00 00  00 00 00 00 00 00 00 00  |....0...........|

	// CommonPrefixLen(Source(DA), DA) < CommonPrefixLen(Source(DB), DB),
	// then prefer DB.
	//
	// However, applying this rule to IPv4 addresses causes
	// problems (see issues 13283 and 18518), so limit to IPv6.
	if DA.To4() == nil && DB.To4() == nil {
		commonA := commonPrefixLen(SourceDA, DA)
		commonB := commonPrefixLen(SourceDB, DB)

		if commonA > commonB {
			return preferDA
		}