go/test/escape3.go

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// run
// Copyright 2011 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 the run-time behavior of escape analysis-related optimizations.
package main
func main() {
test1()
}
func test1() {
check1(0)
check1(1)
check1(2)
}
type T1 struct {
X, Y, Z int
}
func f() int {
return 1
}
func check1(pass int) T1 {
v := []T1{{X: f(), Z: f()}}
if v[0].Y != 0 {
panic("nonzero init")
}
v[0].Y = pass
return v[0]
}