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a00611f58d
Updates #30228 Change-Id: Ie9dca7c64be8dff729be98cb6190236287afd23e Reviewed-on: https://go-review.googlesource.com/c/163213 Run-TryBot: Bryan C. Mills <bcmills@google.com> Reviewed-by: Jay Conrod <jayconrod@google.com>
53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build darwin dragonfly freebsd linux netbsd openbsd solaris
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package main
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// Test a shared library created by -buildmode=c-shared that does not
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// export anything.
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import (
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"fmt"
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"os"
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"syscall"
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)
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// To test this we want to communicate between the main program and
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// the shared library without using any exported symbols. The init
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// function creates a pipe and Dups the read end to a known number
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// that the C code can also use.
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const (
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fd = 30
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)
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func init() {
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var p [2]int
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if e := syscall.Pipe(p[0:]); e != nil {
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fmt.Fprintf(os.Stderr, "pipe: %v\n", e)
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os.Exit(2)
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}
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if e := dup2(p[0], fd); e != nil {
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fmt.Fprintf(os.Stderr, "dup2: %v\n", e)
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os.Exit(2)
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}
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const str = "PASS"
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if n, e := syscall.Write(p[1], []byte(str)); e != nil || n != len(str) {
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fmt.Fprintf(os.Stderr, "write: %d %v\n", n, e)
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os.Exit(2)
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}
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if e := syscall.Close(p[1]); e != nil {
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fmt.Fprintf(os.Stderr, "close: %v\n", e)
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os.Exit(2)
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}
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}
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func main() {
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}
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