1 files changed, 43 insertions, 0 deletions
diff --git a/src/pkg/runtime/proc_test.go b/src/pkg/runtime/proc_test.go
new file mode 100644
index 000000000..a15b2d80a
--- /dev/null
+++ b/src/pkg/runtime/proc_test.go
@@ -0,0 +1,43 @@
+// Copyright 2011 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 runtime_test
+
+import (
+	"runtime"
+	"testing"
+)
+
+var stop = make(chan bool, 1)
+
+func perpetuumMobile() {
+	select {
+	case <-stop:
+	default:
+		go perpetuumMobile()
+	}
+}
+
+func TestStopTheWorldDeadlock(t *testing.T) {
+	if testing.Short() {
+		t.Logf("skipping during short test")
+		return
+	}
+	runtime.GOMAXPROCS(3)
+	compl := make(chan int, 1)
+	go func() {
+		for i := 0; i != 1000; i += 1 {
+			runtime.GC()
+		}
+		compl <- 0
+	}()
+	go func() {
+		for i := 0; i != 1000; i += 1 {
+			runtime.GOMAXPROCS(3)
+		}
+	}()
+	go perpetuumMobile()
+	<-compl
+	stop <- true
+}