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Source file test/inline_literal.go

Documentation: test

     1  // run
     2  
     3  // Copyright 2017 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package main
     8  
     9  import (
    10  	"log"
    11  	"reflect"
    12  	"runtime"
    13  )
    14  
    15  func hello() string {
    16  	return "Hello World" // line 16
    17  }
    18  
    19  func foo() string { // line 19
    20  	x := hello() // line 20
    21  	y := hello() // line 21
    22  	return x + y // line 22
    23  }
    24  
    25  func bar() string {
    26  	x := hello() // line 26
    27  	return x
    28  }
    29  
    30  // funcPC returns the PC for the func value f.
    31  func funcPC(f interface{}) uintptr {
    32  	return reflect.ValueOf(f).Pointer()
    33  }
    34  
    35  // Test for issue #15453. Previously, line 26 would appear in foo().
    36  func main() {
    37  	pc := funcPC(foo)
    38  	f := runtime.FuncForPC(pc)
    39  	for ; runtime.FuncForPC(pc) == f; pc++ {
    40  		file, line := f.FileLine(pc)
    41  		if line == 0 {
    42  			continue
    43  		}
    44  		// Line 16 can appear inside foo() because PC-line table has
    45  		// innermost line numbers after inlining.
    46  		if line != 16 && !(line >= 19 && line <= 22) {
    47  			log.Fatalf("unexpected line at PC=%d: %s:%d\n", pc, file, line)
    48  		}
    49  	}
    50  }
    51  

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