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go/test/fixedbugs/issue29735.go

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// run
// Copyright 2019 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.
// Make sure FuncForPC won't panic when given a pc which
// lies between two functions.
package main
import (
"runtime"
)
func main() {
var stack [1]uintptr
runtime.Callers(1, stack[:])
f() // inlined function, to give main some inlining info
for i := uintptr(0); true; i++ {
f := runtime.FuncForPC(stack[0] + i)
if f.Name() != "main.main" && f.Name() != "main.f" {
// Reached next function successfully.
break
}
}
}
func f() {
sink = 0 // one instruction which can't be removed
}
var sink int