mirror of
https://github.com/golang/go
synced 2024-11-26 17:26:56 -07:00
51 lines
1.0 KiB
Go
51 lines
1.0 KiB
Go
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// run
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// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"log"
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"reflect"
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"runtime"
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)
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func hello() string {
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return "Hello World" // line 16
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}
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func foo() string { // line 19
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x := hello() // line 20
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y := hello() // line 21
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return x + y // line 22
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}
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func bar() string {
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x := hello() // line 26
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return x
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}
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// funcPC returns the PC for the func value f.
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func funcPC(f interface{}) uintptr {
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return reflect.ValueOf(f).Pointer()
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}
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// Test for issue #15453. Previously, line 26 would appear in foo().
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func main() {
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pc := funcPC(foo)
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f := runtime.FuncForPC(pc)
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for ; runtime.FuncForPC(pc) == f; pc++ {
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file, line := f.FileLine(pc)
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if line == 0 {
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continue
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}
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// Line 16 can appear inside foo() because PC-line table has
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// innermost line numbers after inlining.
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if line != 16 && !(line >= 19 && line <= 22) {
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log.Fatalf("unexpected line at PC=%d: %s:%d\n", pc, file, line)
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}
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}
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}
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