libgo4.go

     1  // Copyright 2015 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package main
     6  
     7  import "C"
     8  
     9  import (
    10  	"fmt"
    11  	"os"
    12  	"runtime"
    13  )
    14  
    15  // RunGoroutines starts some goroutines that don't do anything.
    16  // The idea is to get some threads going, so that a signal will be delivered
    17  // to a thread started by Go.
    18  //export RunGoroutines
    19  func RunGoroutines() {
    20  	for i := 0; i < 4; i++ {
    21  		go func() {
    22  			runtime.LockOSThread()
    23  			select {}
    24  		}()
    25  	}
    26  }
    27  
    28  var P *byte
    29  
    30  // TestSEGV makes sure that an invalid address turns into a run-time Go panic.
    31  //export TestSEGV
    32  func TestSEGV() {
    33  	defer func() {
    34  		if recover() == nil {
    35  			fmt.Fprintln(os.Stderr, "no panic from segv")
    36  			os.Exit(1)
    37  		}
    38  	}()
    39  	*P = 0
    40  	fmt.Fprintln(os.Stderr, "continued after segv")
    41  	os.Exit(1)
    42  }
    43  
    44  func main() {
    45  }
    46
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