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 var t *struct { 15 c chan int 16 } 17 18 var c chan int 19 20 func f() { 21 select { 22 case <-t.c: // THIS IS LINE 22 23 break 24 case <-c: 25 break 26 } 27 } 28 29 func main() { 30 defer func() { 31 recover() 32 for i := 0;; i++ { 33 pc, file, line, ok := runtime.Caller(i) 34 if !ok { 35 print("BUG: bug347: cannot find caller\n") 36 return 37 } 38 if !strings.Contains(file, "bug347.go") || runtime.FuncForPC(pc).Name() != "main.f" { 39 // walk past runtime frames 40 continue 41 } 42 if line != 22 { 43 print("BUG: bug347: panic at ", file, ":", line, " in ", runtime.FuncForPC(pc).Name(), "\n") 44 } 45 return 46 } 47 }() 48 f() 49 } 50
