cmd/ld: really import runtime/cgo for external link

Fixes issue 8032.

LGTM=rsc
R=rsc
CC=golang-codereviews
https://codereview.appspot.com/95580043

2 files changed, 36 insertions, 0 deletions

diff --git a/misc/cgo/nocgo/nocgo.go b/misc/cgo/nocgo/nocgo.go
new file mode 100644
index 000000000..00ae5e9c8
--- /dev/null
+++ b/misc/cgo/nocgo/nocgo.go
@@ -0,0 +1,22 @@
+// Copyright 2014 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.
+
+// Test that -static works when not using cgo.  This test is in
+// misc/cgo to take advantage of the testing framework support for
+// when -static is expected to work.
+
+package nocgo
+
+func NoCgo() int {
+	c := make(chan int)
+
+	// The test is run with external linking, which means that
+	// goroutines will be created via the runtime/cgo package.
+	// Make sure that works.
+	go func() {
+		c <- 42
+	}()
+
+	return <-c
+}
diff --git a/misc/cgo/nocgo/nocgo_test.go b/misc/cgo/nocgo/nocgo_test.go
new file mode 100644
index 000000000..45d247cf9
--- /dev/null
+++ b/misc/cgo/nocgo/nocgo_test.go
@@ -0,0 +1,14 @@
+// Copyright 2014 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.
+
+package nocgo
+
+import "testing"
+
+func TestNop(t *testing.T) {
+	i := NoCgo()
+	if i != 42 {
+		t.Errorf("got %d, want %d", i, 42)
+	}
+}