1 files changed, 17 insertions, 0 deletions
diff --git a/src/runtime/malloc_test.go b/src/runtime/malloc_test.go
index a2d5864d3d..9831dbe079 100644
--- a/src/runtime/malloc_test.go
+++ b/src/runtime/malloc_test.go
@@ -176,6 +176,23 @@ func TestPhysicalMemoryUtilization(t *testing.T) {
 	}
 }
 
+func TestScavengedBitsCleared(t *testing.T) {
+	if OldPageAllocator {
+		// This test is only relevant for the new page allocator.
+		return
+	}
+	var mismatches [128]BitsMismatch
+	if n, ok := CheckScavengedBitsCleared(mismatches[:]); !ok {
+		t.Errorf("uncleared scavenged bits")
+		for _, m := range mismatches[:n] {
+			t.Logf("\t@ address 0x%x", m.Base)
+			t.Logf("\t|  got: %064b", m.Got)
+			t.Logf("\t| want: %064b", m.Want)
+		}
+		t.FailNow()
+	}
+}
+
 type acLink struct {
 	x [1 << 20]byte
 }