b.Write(buf[0:1])
	var cap0 int
	for i := 0; i < 5<<10; i++ {
		b.Write(buf)
		b.Read(buf)
		if i == 0 {
			cap0 = b.Cap()
		}
	}
	cap1 := b.Cap()
	// (*Buffer).grow allows for 2x capacity slop before sliding,
	// so set our error threshold at 3x.
	if cap1 > cap0*3 {
		t.Errorf("buffer cap = %d; too big (grew from %d)", cap1, cap0)
	}
}

func BenchmarkWriteByte(b *testing.B) {
	const n = 4 << 10

of an error message on a given line to deduce the information it
needs. The program is syntactically valid regardless of whether each
name is a type or an ordinary identifier, so there will be no syntax
errors that might stop parsing early.

An error on not-declared:1 indicates that foo is undeclared.
An error on not-type:1 indicates that foo is not a type (if declared at all, it is an identifier).

			r:            strings.NewReader("abcdefghijklmnopqrstuvwxyz"),
			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",

Comments serve as program documentation. There are two forms:
</p>

<ol>
<li>
<i>Line comments</i> start with the character sequence <code>//</code>
and stop at the end of the line.
</li>
<li>
<i>General comments</i> start with the character sequence <code>/*</code>
and stop with the first subsequent character sequence <code>*/</code>.
</li>
</ol>

<p>
A comment cannot start inside a <a href="#Rune_literals">rune</a> or

      description: Breaking the Go 1 compatibility guarantee is a large cost and requires a large benefit.
      placeholder: |
       Yes or No

       If yes, 
        1. Show example code before and after the change.

    validations:
      required: true

  - type: textarea
    id: orthogonality
    attributes:

	// Output:
	// 3
	// 5
}

func ExampleCut() {
	show := func(s, sep string) {
		before, after, found := bytes.Cut([]byte(s), []byte(sep))
		fmt.Printf("Cut(%q, %q) = %q, %q, %v\n", s, sep, before, after, found)
	}
	show("Gopher", "Go")
	show("Gopher", "ph")
	show("Gopher", "er")
	show("Gopher", "Badger")
	// Output:
	// Cut("Gopher", "Go") = "", "pher", true

pkg syscall (darwin-arm64), const TIOCPKT_START = 8
pkg syscall (darwin-arm64), const TIOCPKT_START ideal-int
pkg syscall (darwin-arm64), const TIOCPKT_STOP = 4
pkg syscall (darwin-arm64), const TIOCPKT_STOP ideal-int
pkg syscall (darwin-arm64), const TIOCPTYGNAME = 1082160211
pkg syscall (darwin-arm64), const TIOCPTYGNAME ideal-int
pkg syscall (darwin-arm64), const TIOCPTYGRANT = 536900692

pkg syscall (freebsd-arm64), const TIOCPKT_START = 8
pkg syscall (freebsd-arm64), const TIOCPKT_START ideal-int
pkg syscall (freebsd-arm64), const TIOCPKT_STOP = 4
pkg syscall (freebsd-arm64), const TIOCPKT_STOP ideal-int
pkg syscall (freebsd-arm64), const TIOCPTMASTER = 536900636
pkg syscall (freebsd-arm64), const TIOCPTMASTER ideal-int
pkg syscall (freebsd-arm64), const TIOCSBRK = 536900731

`Stop` methods have not been called.
Earlier versions of Go did not collect unstopped `Timer`s until after
they had fired and never collected unstopped `Ticker`s.

Second, the timer channel associated with a `Timer` or `Ticker` is
now unbuffered, with capacity 0.
The main effect of this change is that Go now guarantees
that for any call to a `Reset` or `Stop` method, no stale values

			break
		}
	}

	// Now look for the first ASCII non-space byte from the end
	stop := len(s)
	for ; stop > start; stop-- {
		c := s[stop-1]
		if c >= utf8.RuneSelf {
			return TrimFunc(s[start:stop], unicode.IsSpace)
		}
		if asciiSpace[c] == 0 {
			break
		}
	}

	// At this point s[start:stop] starts and ends with an ASCII
	// non-space bytes, so we're done. Non-ASCII cases have already