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      1 // run
      2 
      3 // Copyright 2016 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 "fmt"
     10 
     11 func f1() (x int) {
     12 	for {
     13 		defer func() {
     14 			recover()
     15 			x = 1
     16 		}()
     17 		panic(nil)
     18 	}
     19 }
     20 
     21 var sink *int
     22 
     23 func f2() (x int) {
     24 	sink = &x
     25 	defer func() {
     26 		recover()
     27 		x = 1
     28 	}()
     29 	panic(nil)
     30 }
     31 
     32 func f3(b bool) (x int) {
     33 	sink = &x
     34 	defer func() {
     35 		recover()
     36 		x = 1
     37 	}()
     38 	if b {
     39 		panic(nil)
     40 	}
     41 	return
     42 }
     43 
     44 func main() {
     45 	if x := f1(); x != 1 {
     46 		panic(fmt.Sprintf("f1 returned %d, wanted 1", x))
     47 	}
     48 	if x := f2(); x != 1 {
     49 		panic(fmt.Sprintf("f2 returned %d, wanted 1", x))
     50 	}
     51 	if x := f3(true); x != 1 {
     52 		panic(fmt.Sprintf("f3(true) returned %d, wanted 1", x))
     53 	}
     54 	if x := f3(false); x != 1 {
     55 		panic(fmt.Sprintf("f3(false) returned %d, wanted 1", x))
     56 	}
     57 }
     58