diff --git a/src/runtime/debug.go b/src/runtime/debug.go
index 3dab52353b..4b387a89a4 100644
--- a/src/runtime/debug.go
+++ b/src/runtime/debug.go
@@ -18,3 +18,7 @@ func NumCgoCall() int {
 func NumGoroutine() int {
 	return 1
 }
+
+// Stub for Breakpoint, does not do anything.
+func Breakpoint() {
+}