}
	fmt.Fprintf(os.Stderr, "usage: go tool covdata [command]\n")
	fmt.Fprintf(os.Stderr, `
Commands are:

textfmt     convert coverage data to textual format
percent     output total percentage of statements covered
pkglist     output list of package import paths
func        output coverage profile information for each function
merge       merge data files together
subtract    subtract one set of data files from another set

	}

	runtimeSyms := map[string]string{
		"runtime.text":      "T",
		"runtime.etext":     "T",
		"runtime.rodata":    "R",
		"runtime.erodata":   "R",
		"runtime.epclntab":  "R",
		"runtime.noptrdata": "D",
	}

	if runtime.GOOS == "aix" && iscgo {
		// pclntab is moved to .data section on AIX.
		runtimeSyms["runtime.epclntab"] = "D"
	}

	out, err = testenv.Command(t, nmPath(t), exe).CombinedOutput()

DATA sincoss0<>+0(SB)/8, $0.100000000000000000E+01
GLOBL sincoss0<>+0(SB), RODATA, $8
DATA sincoss1<>+0(SB)/8, $-.166666666666666657E+00
GLOBL sincoss1<>+0(SB), RODATA, $8
DATA sincoss2<>+0(SB)/8, $0.833333333333309209E-02
GLOBL sincoss2<>+0(SB), RODATA, $8
DATA sincoss3<>+0(SB)/8, $-.198412698410701448E-03
GLOBL sincoss3<>+0(SB), RODATA, $8
DATA sincoss4<>+0(SB)/8, $0.275573191453906794E-05
GLOBL sincoss4<>+0(SB), RODATA, $8

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package tzdata provides an embedded copy of the timezone database.
// If this package is imported anywhere in the program, then if
// the time package cannot find tzdata files on the system,
// it will use this embedded information.
//
// Importing this package will increase the size of a program by about
// 450 KB.

DATA ·tanrodataL13<> + 64(SB)/8, $0.108285667160535624e-31
DATA ·tanrodataL13<> + 72(SB)/8, $0.612323399573676480e-16
DATA ·tanrodataL13<> + 80(SB)/8, $0.157079632679489656e+01
DATA ·tanrodataL13<> + 88(SB)/8, $0.636619772367581341e+00
GLOBL ·tanrodataL13<> + 0(SB), RODATA, $96

// Constants
DATA ·tanxnan<> + 0(SB)/8, $0x7ff8000000000000
GLOBL ·tanxnan<> + 0(SB), RODATA, $8

    }

    def "handles no garbage collection data"() {
        when:
        gcInfo.getCollectionTime() >> 25
        runningStats.getPrettyUpTime() >> "3 mins"
        runningStats.getAllBuildsTime() >> 1000

        gcMonitor.getHeapStats() >> GarbageCollectionStats.noData()
        gcMonitor.getNonHeapStats() >> GarbageCollectionStats.noData()

        then:

exec $WORK/modex.exe

# Restore previous GOCOVERDIR setting
env GOCOVERDIR=$SAVEGOCOVERDIR

# Examine the result.
go tool covdata percent -i=$WORK/covdata
stdout  'coverage:.*[1-9][0-9.]+%'

# The whole enchilada.
go tool covdata textfmt -i=$WORK/covdata -o=$WORK/covdata/out.txt
grep 'mode: set' $WORK/covdata/out.txt
grep 'mod.example/main/main.go:' $WORK/covdata/out.txt
grep 'mod.example/sub/sub.go:' $WORK/covdata/out.txt

            return noData();
        } else {
            return new GarbageCollectionStats(
                    0, // non-heap spaces are not garbage collected
                    calculateAverageUsage(events),
                    findMaxSize(events),
                    events.size()
            );
        }
    }

    private static GarbageCollectionStats noData() {

		{data, cred1, false},
	}

	for _, test := range tests {
		t.Run("", func(t *testing.T) {
			ddata, err := madmin.DecryptData(test.cred.String(), bytes.NewReader(test.edata))
			if err != nil && test.success {
				t.Errorf("Expected success, saw failure %v", err)
			}
			if err == nil && !test.success {
				t.Error("Expected failure, saw success")
			}
			if test.success {
				if !bytes.Equal(ddata, data) {

5. Merge profiles together:

	$ go tool covdata merge -i=indir1,indir2 -o=outdir -modpaths=github.com/go-delve/delve
	$

6. Subtract one profile from another

	$ 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>
	$