},
			{
				Name:     "bar.txt",
				Content:  []byte("bar\n"),
				Modified: time.Date(1979, 11, 30, 0, 0, 0, 0, time.UTC),
				Mode:     0666,
			},
		},
	},
	// Tests that we verify (and accept valid) crc32s on files
	// with crc32s in their file header (not in data descriptors)
	{
		Name: "crc32-not-streamed.zip",
		File: []ZipTestFile{
			{
				Name:     "foo.txt",
				Content:  []byte("foo\n"),

			n:            27,
			want:         26,
			wantErr:      io.EOF,
			wantBuffered: 0,
		},
		// Any error from filling shouldn't show up until we
		// get past the valid bytes. Here we return 5 valid bytes at the same time
		// as an error, but test that we don't see the error from Discard.
		{
			name: "fill error, discard less",
			r: newScriptedReader(func(p []byte) (n int, err error) {

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

// This contains the majority of valid opcode combinations
// available in cmd/internal/obj/ppc64/asm9.go with
// their valid instruction encodings.

#include "../../../../../runtime/textflag.h"

// In case of index mode instructions, usage of
// (Rx)(R0) is equivalent to (Rx+R0)

			for i := 0; i < b.N; i++ {
				TrimSpace(test.input)
			}
		})
	}
}

func BenchmarkToValidUTF8(b *testing.B) {
	tests := []struct {
		name  string
		input []byte
	}{
		{"Valid", []byte("typical")},
		{"InvalidASCII", []byte("foo\xffbar")},
		{"InvalidNonASCII", []byte("日本語\xff日本語")},
	}
	replacement := []byte("\uFFFD")
	b.ResetTimer()
	for _, test := range tests {

	// If we see an error at not-str-lit:xxx, the corresponding name is not a string literal.
	//
	// The specific input forms are chosen so that they are valid C syntax regardless of
	// whether name denotes a type or an expression.

	var b bytes.Buffer
	b.WriteString(builtinProlog)
	b.WriteString(f.Preamble)

	for i, n := range names {