return Event{}, fmt.Errorf("unexpected EOF while reading stack: args=%v", args)
			}
			if err != nil {
				return Event{}, err
			}
			frame, err := readArgs(line, frameFields)
			if err != nil {
				return Event{}, err
			}
			args = append(args, frame...)
		}
	}
	var data []byte
	if spec.HasData {
		line, err := r.nextLine()
		if err == io.EOF {

// connection, and it is used for the PortForward subprotocol (e.g.
// kubectl port-forward). This proxy implements tunneling by transparently
// encoding and decoding SPDY framed data into and out of the payload of a
// WebSocket data frame. The primary structure for this tunneling is
// the TunnelingConnection. A lot of the other code in streamtunnel.go
// is for properly upgrading both the upstream SPDY connection and the

	// the "frame" to cgocallback and on to callbackWrap.
	SUBQ	$(24+callbackArgs__size), SP
	MOVQ	AX, (24+callbackArgs_index)(SP) 	// callback index
	MOVQ	R8, (24+callbackArgs_args)(SP)  	// address of args vector
	MOVQ	$0, (24+callbackArgs_result)(SP)	// result
	LEAQ	24(SP), AX
	// Call cgocallback, which will call callbackWrap(frame).
	MOVQ	$0, 16(SP)	// context

In Go 1.23, overhead should be in the single digit percentages.

<!-- https://go.dev/issue/62737 , https://golang.org/cl/576681,  https://golang.org/cl/577615 -->
The compiler in Go 1.23 can now overlap the stack frame slots of local variables
accessed in disjoint regions of a function, which reduces stack usage
for Go applications.

<!-- https://go.dev/cl/577935 -->

    fun beanStateWriterFor(beanType: Class<*>): BeanStateWriter

    suspend fun write(value: Any?)

    fun writeClass(type: Class<*>)
}


interface Tracer {

    fun open(frame: String)

    fun close(frame: String)
}


interface ReadContext : IsolateContext, MutableIsolateContext, Decoder {

    val sharedIdentities: ReadIdentities

    override val isolate: ReadIsolate

	// containing that address.
	Symbols(r *regexp.Regexp, addr uint64) ([]*Sym, error)

	// Close closes the file, releasing associated resources.
	Close() error
}

// A Frame describes a location in a single line in a source file.
type Frame struct {
	Func   string // name of function
	File   string // source file name
	Line   int    // line in file
	Column int    // column in line (if available)
}

    def elementWithNoSourceFile = new StackTraceElement("class", "method", null, 11)
    def elementWithNoLineNumber = new StackTraceElement("class", "method", "filename", -1)

    def 'uses location info from deepest stack frame with matching source file and line information'() {
        def stack = [elementWithNoSourceFile, elementWithNoLineNumber, otherElement, element, callerElement]
        def failure = Mock(Failure) {

	//     \tFILE:LINE +0xRELPC sp=... fp=... pc=...
	getPC := func(line string) (uint64, error) {
		_, pcstr, ok := strings.Cut(line, " pc=") // e.g. pc=0x%x
		if !ok {
			return 0, fmt.Errorf("no pc= for stack frame: %s", line)
		}
		return strconv.ParseUint(pcstr, 0, 64) // 0 => allow 0x prefix
	}

	var (
		pcs            []uintptr
		parentSentinel uint64
		childSentinel  = sentinel()

  // The control dependency is for constants in the cond graph, and other ops
  // that do not depend on the loop variables. This ensures that these ops are
  // in the while loop frame (since they will indirectly depend on an Enter node
  // defining the frame) and that they are executed once per loop iteration.
  //
  // TODO(skyewm): the control dep will be added to all nodes in the cond graph.

	far uint64 // virtual fault addr
	esr uint32 // exception syndrome
	exc uint32 // number of arm exception taken
}

type regs64 struct {
	x     [29]uint64 // registers x0 to x28
	fp    uint64     // frame register, x29
	lr    uint64     // link register, x30
	sp    uint64     // stack pointer, x31
	pc    uint64     // program counter
	cpsr  uint32     // current program status register
	__pad uint32
}