}

// An inlineUnwinder iterates over the stack of inlined calls at a PC by
// decoding the inline table. The last step of iteration is always the frame of
// the physical function, so there's always at least one frame.
//
// This is typically used as:
//
//	for u, uf := newInlineUnwinder(...); uf.valid(); uf = u.next(uf) { ... }
//

    private
    var nextSequenceNumber = 0L

    override fun open(frame: String) {
        log(frame, 'O')
    }

    override fun close(frame: String) {
        log(frame, 'C')
    }

    private
    fun log(frame: String, openOrClose: Char) {
        logger.log(
            level,
            """{"profile":"$profile","type":"$openOrClose","frame":"$frame","at":${writePosition()},"sn":${nextSequenceNumber()}}"""
        )

		return nil, fmt.Errorf("unexpected addr2line output: %s", resp)
	}

	var stack []plugin.Frame
	for {
		frame, end := d.readFrame()
		if end {
			break
		}

		if frame != (plugin.Frame{}) {
			stack = append(stack, frame)
		}
	}
	return stack, err
}

// addrInfo returns the stack frame information for a specific program
// address. It returns nil if the address could not be identified.

	RET

// func cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT ·cgocallback(SB),NOSPLIT,$24-24
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.
	// It is used to dropm while thread is exiting.
	MOVV	fn+0(FP), R5
	BNE	R5, loadg
	// Restore the g from frame.
	MOVV	frame+8(FP), g
	JMP	dropm

loadg:

		PR_CAP_AMBIENT_RAISE = 0x2
	)

	// vfork requires that the child not touch any of the parent's
	// active stack frames. Hence, the child does all post-fork
	// processing in this stack frame and never returns, while the
	// parent returns immediately from this frame and does all
	// post-fork processing in the outer frame.
	//
	// Declare all variables at top in case any
	// declarations require heap allocation (e.g., err2).

	textstksiz := p.To.Offset
	if textstksiz == -8 {
		// Historical way to mark NOFRAME.
		p.From.Sym.Set(obj.AttrNoFrame, true)
		textstksiz = 0
	}
	if textstksiz < 0 {
		c.ctxt.Diag("negative frame size %d - did you mean NOFRAME?", textstksiz)
	}
	if p.From.Sym.NoFrame() {
		if textstksiz != 0 {
			c.ctxt.Diag("NOFRAME functions must have a frame size of 0, not %d", textstksiz)
		}
	}

	MOVW	R2, ret+8(FP)
	RET

// cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT ·cgocallback(SB),NOSPLIT,$12-12
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.
	// It is used to dropm while thread is exiting.
	MOVW	fn+0(FP), R5
	BNE	R5, loadg
	// Restore the g from frame.
	MOVW	frame+4(FP), g
	JMP	dropm

loadg:

	b [1500000000]byte
}

func (x large) f1() int { // GC_ERROR "stack frame too large"
	return 5
}

func f2(x large) int { // GC_ERROR "stack frame too large"
	return 5
}

func f3() (x large, i int) { // GC_ERROR "stack frame too large"
	return

//
// If two Stacks are equal then their Frames are guaranteed to be identical. If they are not
// equal, however, their Frames may still be equal.
type Stack struct {
	table *evTable
	id    stackID
}

// Frames is an iterator over the frames in a Stack.
func (s Stack) Frames(yield func(f StackFrame) bool) bool {
	if s.id == 0 {
		return true
	}

// walkFrames calls visit for each call frame represented by pcs.
//
// pcs should be a slice of PCs, as returned by runtime.Callers.
func walkFrames(pcs []uintptr, visit frameVisitor) {
	if len(pcs) == 0 {
		return
	}

	frames := runtime.CallersFrames(pcs)
	for {
		frame, more := frames.Next()
		visit(frame.File, frame.Line, frame.Function, frame.PC-frame.Entry)
		if !more {
			return
		}
	}
}