{[]string{}, "", 0, false},

		{str1, "foo", 0, true},
		{str1, "bar", 0, false},
		{str1, "zx", 1, false},

		{str2, "aa", 0, false},
		{str2, "ab", 0, true},
		{str2, "ad", 1, false},
		{str2, "ca", 1, true},
		{str2, "ra", 2, false},

		{str3, "bb", 0, false},
		{str3, "mo", 0, true},
		{str3, "nb", 1, false},
		{str3, "qo", 1, true},
		{str3, "tr", 2, false},
		{str3, "vo", 2, true},

		{[]string{}, "", 0, false},

		{str1, "foo", 0, true},
		{str1, "bar", 0, false},
		{str1, "zx", 1, false},

		{str2, "aa", 0, false},
		{str2, "ab", 0, true},
		{str2, "ad", 1, false},
		{str2, "ca", 1, true},
		{str2, "ra", 2, false},

		{str3, "bb", 0, false},
		{str3, "mo", 0, true},
		{str3, "nb", 1, false},
		{str3, "qo", 1, true},
		{str3, "tr", 2, false},
		{str3, "vo", 2, true},

		a string
		b int
	}
	const size = 1024
	var (
		str1 = "foobar"
		str2 = "foobarz"

		a [size]T2
		c [size]T2
	)

	for i := 0; i < size; i++ {
		a[i].a = str1
		c[i].a = str1
	}
	c[len(c)-1].a = str2

	b.ResetTimer()
	for j := 0; j < b.N; j++ {
		_ = a == c
	}
}

const size = 16

type T1 struct {
	a [size]byte
}

type String string

type PtrInterfaceItem struct {
	Str1 any // basic
	Str2 any // derived
}

// We'll send pointers; should receive values.
// Also check that we can register T but send *T.
func TestInterfacePointer(t *testing.T) {
	b := new(bytes.Buffer)
	str1 := "howdy"
	str2 := String("kiddo")
	item1 := &PtrInterfaceItem{
		&str1,
		&str2,
	}
	// Register the type.
	Register(str2)

}

func (b *Buffer) baz() { // ERROR "b does not escape$"
	b.str1 = b.str1[1:2] // ERROR "\(\*Buffer\).baz ignoring self-assignment in b.str1 = b.str1\[1:2\]$"
	b.str1 = b.str2[1:2] // ERROR "\(\*Buffer\).baz ignoring self-assignment in b.str1 = b.str2\[1:2\]$"
}

func (b *Buffer) bat() { // ERROR "leaking param content: b$"

}

func (b *Buffer) baz() { // ERROR "b does not escape$"
	b.str1 = b.str1[1:2] // ERROR "\(\*Buffer\).baz ignoring self-assignment in b.str1 = b.str1\[1:2\]$"
	b.str1 = b.str2[1:2] // ERROR "\(\*Buffer\).baz ignoring self-assignment in b.str1 = b.str2\[1:2\]$"
}

func (b *Buffer) bat() { // ERROR "leaking param content: b$"

	m.Set("map1", &m1)
	m1.Add("a", 1)
	m1.Add("z", 2)
	m.Set("map2", &m2)
	for i := 0; i < 9; i++ {
		m2.Add(strconv.Itoa(i), int64(i))
	}
	var s1, s2 String
	m.Set("str1", &s1)
	s1.Set("hello, world!")
	m.Set("str2", &s2)
	s2.Set("fizz buzz")
	b.ResetTimer()

	b.ReportAllocs()
	for i := 0; i < b.N; i++ {
		_ = m.String()
	}
}

func BenchmarkRealworldExpvarUsage(b *testing.B) {

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

package b

import "./a"

type TypeB string

(MOVHZload [off] {sym} ptr1 (MOVHstore  [off] {sym} ptr2 x _)) && isSamePtr(ptr1, ptr2) => (MOVHZreg x)
(MOVBZload [off] {sym} ptr1 (MOVBstore  [off] {sym} ptr2 x _)) && isSamePtr(ptr1, ptr2) => (MOVBZreg x)
(MOVDload  [off] {sym} ptr1 (FMOVDstore [off] {sym} ptr2 x _)) && isSamePtr(ptr1, ptr2) => (LGDR x)
(FMOVDload [off] {sym} ptr1 (MOVDstore  [off] {sym} ptr2 x _)) && isSamePtr(ptr1, ptr2) => (LDGR x)

// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package str provides string manipulation utilities.
package str

import (
	"fmt"
	"strings"
	"unicode"
	"unicode/utf8"
)

// StringList flattens its arguments into a single []string.
// Each argument in args must have type string or []string.