go inline_literal 源码
golang inline_literal 代码
文件路径：/test/inline_literal.go
// run
// 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 (
"log"
"reflect"
"runtime"
)
func hello() string {
return "Hello World" // line 16
}
func foo() string { // line 19
x := hello() // line 20
y := hello() // line 21
return x + y // line 22
}
func bar() string {
x := hello() // line 26
return x
}
// funcPC returns the PC for the func value f.
func funcPC(f interface{}) uintptr {
return reflect.ValueOf(f).Pointer()
}
// Test for issue #15453. Previously, line 26 would appear in foo().
func main() {
pc := funcPC(foo)
f := runtime.FuncForPC(pc)
for ; runtime.FuncForPC(pc) == f; pc++ {
file, line := f.FileLine(pc)
if line == 0 {
continue
}
// Line 16 can appear inside foo() because PC-line table has
// innermost line numbers after inlining.
if line != 16 && !(line >= 19 && line <= 22) {
log.Fatalf("unexpected line at PC=%d: %s:%d\n", pc, file, line)
}
}
}
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