1 // run 2 3 // Copyright 2011 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 "runtime" 11 "strings" 12 ) 13 14 func f() { 15 var x *string 16 17 for _, i := range *x { // THIS IS LINE 17 18 println(i) 19 } 20 } 21 22 func g() { 23 } 24 25 func main() { 26 defer func() { 27 for i := 0;; i++ { 28 pc, file, line, ok := runtime.Caller(i) 29 if !ok { 30 print("BUG: bug348: cannot find caller\n") 31 return 32 } 33 if !strings.Contains(file, "bug348.go") || runtime.FuncForPC(pc).Name() != "main.f" { 34 // walk past runtime frames 35 continue 36 } 37 if line != 17 { 38 print("BUG: bug348: panic at ", file, ":", line, " in ", runtime.FuncForPC(pc).Name(), "\n") 39 return 40 } 41 recover() 42 return 43 } 44 }() 45 f() 46 } 47
