fw.reset(i)
		err := testf(fw)
		if err == nil {
			log.Fatalf("no error from write %d tag %s", i, tag)
		}
	}
}

func postClear() int {
	return 42
}

func preClear() int {
	return 42
}

// This test is designed to ensure that write errors are properly
// handled by the code that writes out coverage data. It repeatedly

			setGoCoverDir, rdir, edir)
		if err != nil {
			t.Logf("%s", output)
			t.Fatalf("running 'harness -tp %s': %v", tp, err)
		}
		want := []string{tp, "postClear"}
		avoid := []string{"preClear", "main", "final"}
		if msg := testForSpecificFunctions(t, edir, want, avoid); msg != "" {
			t.Logf("%s", output)
			t.Errorf("coverage data from %q output match failed: %s", tp, msg)
		}