// true
	// false
	// true
	// true
	// false
}

func ExampleContainsFunc() {
	f := func(r rune) bool {
		return r >= 'a' && r <= 'z'
	}
	fmt.Println(bytes.ContainsFunc([]byte("HELLO"), f))
	fmt.Println(bytes.ContainsFunc([]byte("World"), f))
	// Output:
	// false
	// true
}

func ExampleCount() {
	fmt.Println(bytes.Count([]byte("cheese"), []byte("e")))

// ContainsRune reports whether the rune is contained in the UTF-8-encoded byte slice b.
func ContainsRune(b []byte, r rune) bool {
	return IndexRune(b, r) >= 0
}

// ContainsFunc reports whether any of the UTF-8-encoded code points r within b satisfy f(r).
func ContainsFunc(b []byte, f func(rune) bool) bool {
	return IndexFunc(b, f) >= 0
}

// IndexByte returns the index of the first instance of c in b, or -1 if c is not present in b.

				ct.b, ct.r, !ct.expected, ct.expected)
		}
	}
}

func TestContainsFunc(t *testing.T) {
	for _, ct := range ContainsRuneTests {
		if ContainsFunc(ct.b, func(r rune) bool {
			return ct.r == r
		}) != ct.expected {
			t.Errorf("ContainsFunc(%q, func(%q)) = %v, want %v",
				ct.b, ct.r, !ct.expected, ct.expected)
		}
	}
}

var makeFieldsInput = func() []byte {

		prefix = "C"
	}
	n.Mangle = prefix + n.Kind + "_" + n.Go
}

func (f *File) isMangledName(s string) bool {
	t, ok := strings.CutPrefix(s, "_C")
	if !ok {
		return false
	}
	return slices.ContainsFunc(nameKinds, func(k string) bool {
		return strings.HasPrefix(t, k+"_")
	})
}

// rewriteCalls rewrites all calls that pass pointers to check that
// they follow the rules for passing pointers between Go and C.