fmt.Fprintf(&buf, "\n")

	override := make(map[string]string)

	// Allow source file to specify override mappings.
	// For example, the socket data structures refer
	// to in_addr and in_addr6 structs but we want to be
	// able to treat them as byte arrays, so the godefs
	// inputs in package syscall say
	//
	//	// +godefs map struct_in_addr [4]byte

Files in this directory are data for Go's API checker ("go tool api", in src/cmd/api).

Each file is a list of API features, one per line.

go1.txt (and similarly named files) are frozen once a version has been
shipped. Each file adds new lines but does not remove any.

except.txt lists features that may disappear without breaking true
compatibility.

Starting with go1.19.txt, each API feature line must end in "#nnnnn"

pkg debug/elf, method (*Prog) Open() io.ReadSeeker
pkg debug/elf, method (*Section) Data() ([]uint8, error)
pkg debug/elf, method (*Section) Open() io.ReadSeeker
pkg debug/elf, method (Class) GoString() string
pkg debug/elf, method (Class) String() string
pkg debug/elf, method (Data) GoString() string
pkg debug/elf, method (Data) String() string
pkg debug/elf, method (DynFlag) GoString() string

	if len(b) > 0 && b[0]&0x80 != 0 {
		// Handling negative numbers relies on the following identity:
		//	-a-1 == ^a
		//
		// If the number is negative, we use an inversion mask to invert the
		// data bytes and treat the value as an unsigned number.
		var inv byte // 0x00 if positive or zero, 0xff if negative
		if b[0]&0x40 != 0 {
			inv = 0xff
		}

		var x uint64
		for i, c := range b {

		}
		if r.Len() != 0 {
			t.Errorf("reader contains %v bytes; want 0", r.Len())
		}
	}
}

func TestReaderLen(t *testing.T) {
	const data = "hello world"
	r := NewReader([]byte(data))
	if got, want := r.Len(), 11; got != want {
		t.Errorf("r.Len(): got %d, want %d", got, want)
	}
	if n, err := r.Read(make([]byte, 10)); err != nil || n != 10 {

pkg syscall (darwin-arm64), const F_FINDSIGS = 78
pkg syscall (darwin-arm64), const F_FINDSIGS ideal-int
pkg syscall (darwin-arm64), const F_FLUSH_DATA = 40
pkg syscall (darwin-arm64), const F_FLUSH_DATA ideal-int
pkg syscall (darwin-arm64), const F_FREEZE_FS = 53
pkg syscall (darwin-arm64), const F_FREEZE_FS ideal-int
pkg syscall (darwin-arm64), const F_FULLFSYNC = 51

	//
	// It must be a relative path, not start with a drive letter (such as "C:"),
	// and must use forward slashes instead of back slashes. A trailing slash
	// indicates that this file is a directory and should have no data.
	Name string

	// Comment is any arbitrary user-defined string shorter than 64KiB.
	Comment string

	// NonUTF8 indicates that Name and Comment are not encoded in UTF-8.
	//

			if name, abi, ok := p.funcAddress(); ok {
				fmt.Fprintf(w, "def %s %s\n", name, abi)
			}
		}
		return
	case "GLOBL", "PCDATA":
		// No text definitions or symbol references.
	case "DATA", "FUNCDATA":
		// For DATA, operands[0] is defined symbol.
		// For FUNCDATA, operands[0] is an immediate constant.
		// Remaining operands may have references.
		if len(operands) < 2 {
			return
		}
		operands = operands[1:]

pkg syscall (freebsd-arm64), const RLIMIT_CPU = 0
pkg syscall (freebsd-arm64), const RLIMIT_CPU ideal-int
pkg syscall (freebsd-arm64), const RLIMIT_DATA = 2
pkg syscall (freebsd-arm64), const RLIMIT_DATA ideal-int
pkg syscall (freebsd-arm64), const RLIMIT_FSIZE = 1
pkg syscall (freebsd-arm64), const RLIMIT_FSIZE ideal-int
pkg syscall (freebsd-arm64), const RLIMIT_NOFILE = 8

		t.Parallel()
		if !generatesZip64(t, gen(0xffff)) {
			t.Error("expected zip64")
		}
	})
}

// suffixSaver is an io.Writer & io.ReaderAt that remembers the last 0
// to 'keep' bytes of data written to it. Call Suffix to get the
// suffix bytes.
type suffixSaver struct {
	keep  int
	buf   []byte
	start int
	size  int64
}

func (ss *suffixSaver) Size() int64 { return ss.size }