go scopes 源码
golang scopes 代码
文件路径：/src/cmd/compile/internal/ssa/testdata/scopes.go
// Copyright 2017 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.
package main
import (
"fmt"
"time"
)
func main() {
growstack() // Use stack early to prevent growth during test, which confuses gdb
test()
}
//go:noinline
func id(x int) int {
return x
}
func test() {
x := id(0)
y := id(0)
fmt.Println(x)
for i := x; i < 3; i++ {
x := i * i
y += id(x) //gdb-dbg=(x,y)//gdb-opt=(x,y)
}
y = x + y //gdb-dbg=(x,y)//gdb-opt=(x,y)
fmt.Println(x, y)
for x := 0; x <= 1; x++ { // From delve scopetest.go
a := y
f1(a)
{
b := 0
f2(b)
if gretbool() {
c := 0
f3(c)
} else {
c := 1.1
f4(int(c))
}
f5(b)
}
f6(a)
}
{ // From delve testnextprog.go
var (
j = id(1)
f = id(2)
)
for i := 0; i <= 5; i++ {
j += j * (j ^ 3) / 100
if i == f {
fmt.Println("foo")
break
}
sleepytime()
}
helloworld()
}
}
func sleepytime() {
time.Sleep(5 * time.Millisecond)
}
func helloworld() {
fmt.Println("Hello, World!")
}
//go:noinline
func f1(x int) {}
//go:noinline
func f2(x int) {}
//go:noinline
func f3(x int) {}
//go:noinline
func f4(x int) {}
//go:noinline
func f5(x int) {}
//go:noinline
func f6(x int) {}
var boolvar = true
func gretbool() bool {
x := boolvar
boolvar = !boolvar
return x
}
var sink string
//go:noinline
func growstack() {
sink = fmt.Sprintf("%#v,%#v,%#v", 1, true, "cat")
}
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