1 files changed, 52 insertions, 0 deletions
diff --git a/misc/cgo/testcshared/testdata/libgo2/libgo2.go b/misc/cgo/testcshared/testdata/libgo2/libgo2.go
new file mode 100644
index 0000000..e57c93b
--- /dev/null
+++ b/misc/cgo/testcshared/testdata/libgo2/libgo2.go
@@ -0,0 +1,52 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package main
+
+// Test a shared library created by -buildmode=c-shared that does not
+// export anything.
+
+import (
+	"fmt"
+	"os"
+	"syscall"
+)
+
+// To test this we want to communicate between the main program and
+// the shared library without using any exported symbols.  The init
+// function creates a pipe and Dups the read end to a known number
+// that the C code can also use.
+
+const (
+	fd = 30
+)
+
+func init() {
+	var p [2]int
+	if e := syscall.Pipe(p[0:]); e != nil {
+		fmt.Fprintf(os.Stderr, "pipe: %v\n", e)
+		os.Exit(2)
+	}
+
+	if e := dup2(p[0], fd); e != nil {
+		fmt.Fprintf(os.Stderr, "dup2: %v\n", e)
+		os.Exit(2)
+	}
+
+	const str = "PASS"
+	if n, e := syscall.Write(p[1], []byte(str)); e != nil || n != len(str) {
+		fmt.Fprintf(os.Stderr, "write: %d %v\n", n, e)
+		os.Exit(2)
+	}
+
+	if e := syscall.Close(p[1]); e != nil {
+		fmt.Fprintf(os.Stderr, "close: %v\n", e)
+		os.Exit(2)
+	}
+}
+
+func main() {
+}