u2 := &U{&s3, &ps4}  // ERROR "&U{...} does not escape$"
	u3 := &U{&s5, &ps6}  // ERROR "&U{...} escapes to heap$"
	v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$"
	Ssink = v.UPiSPa()   // Ssink = &s3 (only &s3 really escapes)
}

// BAD: need fine-grained (field-sensitive) analysis to avoid spurious escape of all but &s3
func tUPiSPb() {
	s1 := "ant"
	s2 := "bat" // ERROR "moved to heap: s2$"

// errorcheck -0 -m

// Copyright 2018 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.

// Issue 23521: improve early DCE for if without explicit else.

package p

//go:noinline
func nonleaf() {}

const truth = true

func f() int { // ERROR "can inline f"
	if truth {
		return 0
	}
	// If everything below is removed, as it should,

    The problem is that GWT responds poorly to two .gwt.xml files in the same
    Java package; see https://goo.gl/pRV3Yn for details.

    The summary is that it ignores one file in favor of the other.
    util.concurrent, like nearly all our packages, has two .gwt.xml files: one
    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.

func main() {
	const Jenny = 8675309
	s := [10]*T{{Jenny}}

	done := make(chan struct{})
	runtime.SetFinalizer(s[0], func(p *T) { close(done) })

	var h, _ interface{} = g(s[:])

	if wait(done) {
		panic("GC'd early")
	}

	if h.([]*T)[0][0] != Jenny {
		panic("lost Jenny's number")
	}

	if !wait(done) {
		panic("never GC'd")
	}
}

func wait(done <-chan struct{}) bool {
	for i := 0; i < 10; i++ {

	}
	return newTCPConn(fd, sd.Dialer.KeepAlive, sd.Dialer.KeepAliveConfig, testPreHookSetKeepAlive, testHookSetKeepAlive), nil
}

func selfConnect(fd *netFD, err error) bool {
	// If the connect failed, we clearly didn't connect to ourselves.
	if err != nil {
		return false
	}

	// The socket constructor can return an fd with raddr nil under certain
	// unknown conditions. The errors in the calls there to Getpeername

	// Leak test is explicitly disable for this test. The test involves an async job that calls GCE
	// metadata server code against a fake metadata server. We do not control the client, and cannot
	// configure it to exit early, retry faster, etc - its all fixed. As a result, we don't have a good
	// way to shut it down if it is still retrying in the background.

// 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 that > 10 non-syntax errors on the same line
// don't lead to early exit. Specifically, here test
// that we see the initialization error for variable
// s.

package main

type T struct{}

func main() {

      // actual response status.
      code == 100 -> true

      // Handle Processing (102) & Early Hints (103) and any new codes without failing
      // 100 and 101 are the exceptions with different meanings
      // But Early Hints not currently exposed
      code in (102 until 200) -> true

      else -> false
    }

    The problem is that GWT responds poorly to two .gwt.xml files in the same
    Java package; see https://goo.gl/pRV3Yn for details.

    The summary is that it ignores one file in favor of the other.
    util.concurrent, like nearly all our packages, has two .gwt.xml files: one
    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.

    The problem is that GWT responds poorly to two .gwt.xml files in the same
    Java package; see https://goo.gl/pRV3Yn for details.

    The summary is that it ignores one file in favor of the other.
    util.concurrent, like nearly all our packages, has two .gwt.xml files: one
    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.