}{
		{
			name:     "equal",
			features: []string{"A", "B", "C"},
			required: []string{"A", "B", "C"},
			ok:       true,
			out:      "",
		},
		{
			name:     "feature added",
			features: []string{"A", "B", "C", "D", "E", "F"},
			required: []string{"B", "D"},
			ok:       false,
			out:      "+A\n+C\n+E\n+F\n",
		},
		{
			name:     "feature removed",

// license that can be found in the LICENSE file.

package cgotest

import (
	"io"
	"os"
	"path/filepath"
	"strings"
)

// OverlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
func OverlayDir(dstRoot, srcRoot string) error {
	dstRoot = filepath.Clean(dstRoot)
	if err := os.MkdirAll(dstRoot, 0777); err != nil {
		return err
	}

	srcRoot, err := filepath.Abs(srcRoot)
	if err != nil {

Before updating vendor directories, ensure that module mode is enabled.
Make sure that GO111MODULE is not set in the environment, or that it is
set to 'on' or 'auto', and if you use a go.work file, set GOWORK=off.

Requirements may be added, updated, and removed with 'go get'.
The vendor directory may be updated with 'go mod vendor'.
A typical sequence might be:

    cd src  # or src/cmd
    go get golang.org/x/net@master
    go mod tidy
    go mod vendor

	f.err = ErrFieldTooLong
}

func (p *parser) parseOctal(b []byte) int64 {
	// Because unused fields are filled with NULs, we need
	// to skip leading NULs. Fields may also be padded with
	// spaces or NULs.
	// So we remove leading and trailing NULs and spaces to
	// be sure.
	b = bytes.Trim(b, " \x00")

	if len(b) == 0 {
		return 0
	}

		// Test AVX512 suffixes.
		{"VADDPD.A X0, X1, X2", `unknown suffix "A"`},
		{"VADDPD.A.A X0, X1, X2", `unknown suffix "A"; duplicate suffix "A"`},
		{"VADDPD.A.A.A X0, X1, X2", `unknown suffix "A"; duplicate suffix "A"`},
		{"VADDPD.A.B X0, X1, X2", `unknown suffix "A"; unknown suffix "B"`},
		{"VADDPD.Z.A X0, X1, X2", `Z suffix should be the last; unknown suffix "A"`},

	// Usage of rounding with invalid operands.
	VADDPD.RU_SAE X3, X2, K1, X1     // ERROR "unsupported rounding"
	VADDPD.RD_SAE X3, X2, K1, X1     // ERROR "unsupported rounding"
	VADDPD.RZ_SAE X3, X2, K1, X1     // ERROR "unsupported rounding"
	VADDPD.RN_SAE X3, X2, K1, X1     // ERROR "unsupported rounding"
	VADDPD.RU_SAE Y3, Y2, K1, Y1     // ERROR "unsupported rounding"
	VADDPD.RD_SAE Y3, Y2, K1, Y1     // ERROR "unsupported rounding"

become a go1.XX.txt for XX >= 19.

The next/ directory contains the only files intended to be mutated.
Each file in that directory contains a list of features that may be added
to the next release of Go. The files in this directory only affect the
warning output from the go api tool. Each file should be named
nnnnn.txt, after the issue number for the accepted proposal.

# Release Notes

The `initial` and `next` subdirectories of this directory are for release notes.

## For developers

Release notes should be added to `next` by editing existing files or creating
new files. **Do not add RELNOTE=yes comments in CLs.** Instead, add a file to
the CL (or ask the author to do so).

At the end of the development cycle, the files will be merged by being
concatenated in sorted order by pathname. Files in the directory matching the

The new methods synonymous with the method of the same name
in [Value] are added to [Type]:
1. [Type.OverflowComplex]
2. [Type.OverflowFloat]
3. [Type.OverflowInt]

	//	{
	//		outcode(int($1), &$2, 0, &$4);
	//	}
	ABSD	F1, F2

	//	LFADD freg ',' freg
	//	{
	//		outcode(int($1), &$2, 0, &$4);
	//	}
	ADDD	F1, F2

	//	LFADD freg ',' freg ',' freg
	//	{
	//		outcode(int($1), &$2, int($4.Reg), &$6);
	//	}
	ADDD	F1, F2, F3

	//	LFCMP freg ',' freg
	//	{
	//		outcode(int($1), &$2, 0, &$4);
	//	}
	CMPEQD	F1, F2


	//
	// WORD
	//