test/fixedbugs/issue19799.go

   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         "os"
  11         "runtime"
  12 )
  13
  14 func foo(x int) int {
  15         return x + 1
  16 }
  17
  18 func test() {
  19         defer func() {
  20                 if r := recover(); r != nil {
  21                         pcs := make([]uintptr, 10)
  22                         n := runtime.Callers(0, pcs)
  23                         pcs = pcs[:n]
  24                         frames := runtime.CallersFrames(pcs)
  25                         for {
  26                                 f, more := frames.Next()
  27                                 if f.Function == "main.foo" {
  28                                         println("did not expect to see call to foo in stack trace")
  29                                         os.Exit(1)
  30                                 }
  31                                 if !more {
  32                                         break
  33                                 }
  34                         }
  35                 }
  36         }()
  37         var v []int
  38         foo(v[0])
  39 }
  40
  41 func bar(x ...int) int {
  42         return x[0] + 1
  43 }
  44
  45 func testVariadic() {
  46         defer func() {
  47                 if r := recover(); r != nil {
  48                         pcs := make([]uintptr, 10)
  49                         n := runtime.Callers(0, pcs)
  50                         pcs = pcs[:n]
  51                         frames := runtime.CallersFrames(pcs)
  52                         for {
  53                                 f, more := frames.Next()
  54                                 if f.Function == "main.bar" {
  55                                         println("did not expect to see call to bar in stack trace")
  56                                         os.Exit(1)
  57                                 }
  58                                 if !more {
  59                                         break
  60                                 }
  61                         }
  62                 }
  63         }()
  64         var v []int
  65         bar(v[0])
  66 }
  67
  68 func main() {
  69         test()
  70         testVariadic()
  71 }