modulePath string

	// Dump subcommand (ex: "textfmt", "debugdump", etc).
	cmd string

	// File to which we will write text format output, if enabled.
	textfmtoutf *os.File

	// Total and covered statements (used by "debugdump" subcommand).
	totalStmts, coveredStmts int

	// Records whether preamble has been emitted for current pkg
	// (used when in "debugdump" mode)
	preambleEmitted bool
}

}

// runDumpChecks examines the output of "go tool covdata debugdump"
// for a given output directory, looking for the presence or absence
// of specific markers.
func runDumpChecks(t *testing.T, s state, dir string, flags []string, checks []dumpCheck) {
	dargs := []string{"-i", dir}
	dargs = append(dargs, flags...)
	lines := runToolOp(t, s, "debugdump", dargs)
	if len(lines) == 0 {
		t.Fatalf("dump run produced no output")

func        output coverage profile information for each function
merge       merge data files together
subtract    subtract one set of data files from another set
intersect   generate intersection of two sets of data files
debugdump   dump data in human-readable format for debugging purposes
`)
	fmt.Fprintf(os.Stderr, "\nFor help on a specific subcommand, try:\n")
	fmt.Fprintf(os.Stderr, "\ngo tool covdata <cmd> -help\n")
	Exit(2)
}

	$ go tool covdata subtract -i=indir1,indir2 -o=outdir
	$

7. Intersect profiles

	$ go tool covdata intersect -i=indir1,indir2 -o=outdir
	$

8. Dump a profile for debugging purposes.

	$ go tool covdata debugdump -i=indir
	<human readable output>
	$
*/

	//t.Logf("harness run output: %s\n", string(b))
	return string(b), err
}

func testForSpecificFunctions(t *testing.T, dir string, want []string, avoid []string) string {
	args := []string{"tool", "covdata", "debugdump",
		"-live", "-pkg=command-line-arguments", "-i=" + dir}
	t.Logf("running: go %v\n", args)
	cmd := exec.Command(testenv.GoToolPath(t), args...)
	b, err := cmd.CombinedOutput()
	if err != nil {