1 files changed, 15 insertions, 0 deletions
diff --git a/src/pkg/runtime/gc_test.go b/src/pkg/runtime/gc_test.go
index e1e1b1d01..3475339bf 100644
--- a/src/pkg/runtime/gc_test.go
+++ b/src/pkg/runtime/gc_test.go
@@ -7,6 +7,7 @@ package runtime_test
 import (
 	"os"
 	"runtime"
+	"runtime/debug"
 	"testing"
 )
 
@@ -82,3 +83,17 @@ func TestGcDeepNesting(t *testing.T) {
 		t.Fail()
 	}
 }
+
+func TestGcHashmapIndirection(t *testing.T) {
+	defer debug.SetGCPercent(debug.SetGCPercent(1))
+	runtime.GC()
+	type T struct {
+		a [256]int
+	}
+	m := make(map[T]T)
+	for i := 0; i < 2000; i++ {
+		var a T
+		a.a[0] = i
+		m[a] = T{}
+	}
+}