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      1 // Copyright 2012 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 // Test that setgid does not hang on GNU/Linux.
      6 // See https://golang.org/issue/3871 for details.
      7 
      8 package cgotest
      9 
     10 /*
     11 #include <sys/types.h>
     12 #include <unistd.h>
     13 */
     14 import "C"
     15 
     16 import (
     17 	"testing"
     18 	"time"
     19 )
     20 
     21 func testSetgid(t *testing.T) {
     22 	c := make(chan bool)
     23 	go func() {
     24 		C.setgid(0)
     25 		c <- true
     26 	}()
     27 	select {
     28 	case <-c:
     29 	case <-time.After(5 * time.Second):
     30 		t.Error("setgid hung")
     31 	}
     32 }
     33