Update to current version of Go library.

From-SVN: r173931

4 files changed, 49 insertions, 5 deletions

diff --git a/libgo/go/runtime/debug/stack.go b/libgo/go/runtime/debug/stack.go
index e7d56ac..e5fae63 100644
--- a/libgo/go/runtime/debug/stack.go
+++ b/libgo/go/runtime/debug/stack.go
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// The debug package contains facilities for programs to debug themselves
-// while they are running.
+// Package debug contains facilities for programs to debug themselves while
+// they are running.
 package debug
 
 import (
diff --git a/libgo/go/runtime/extern.go b/libgo/go/runtime/extern.go
index c6e664a..9da3423 100644
--- a/libgo/go/runtime/extern.go
+++ b/libgo/go/runtime/extern.go
@@ -3,7 +3,7 @@
 // license that can be found in the LICENSE file.
 
 /*
-	The runtime package contains operations that interact with Go's runtime system,
+	Package runtime contains operations that interact with Go's runtime system,
 	such as functions to control goroutines. It also includes the low-level type information
 	used by the reflect package; see reflect's documentation for the programmable
 	interface to the run-time type system.
diff --git a/libgo/go/runtime/proc_test.go b/libgo/go/runtime/proc_test.go
new file mode 100644
index 0000000..a15b2d8
--- /dev/null
+++ b/libgo/go/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
+}
diff --git a/libgo/go/runtime/type.go b/libgo/go/runtime/type.go
index f5f3ef1..b59f2e4 100644
--- a/libgo/go/runtime/type.go
+++ b/libgo/go/runtime/type.go
@@ -117,8 +117,9 @@ type UnsafePointerType commonType
 // ArrayType represents a fixed array type.
 type ArrayType struct {
 	commonType
-	elem *Type // array element type
-	len  uintptr
+	elem  *Type // array element type
+	slice *Type // slice type
+	len   uintptr
 }
 
 // SliceType represents a slice type.