if line.Function.Name == "time.now" {
					if seenNow {
						t.Fatalf("unexpected recursive time.now")
					}
					seenNow = true
				}
			}
		}
	}
}

func TestProfilerStackDepth(t *testing.T) {
	// Disable sampling, otherwise it's difficult to assert anything.
	oldMemRate := runtime.MemProfileRate
	runtime.MemProfileRate = 1
	runtime.SetBlockProfileRate(1)