} else if len(pcBuf) > 0 && pcBuf[0] == logicalStackSentinel {
		// pcBuf contains logical rather than inlined frames, skip has already been
		// applied, just return it without the sentinel value in pcBuf[0].
		return copy(dst, pcBuf[1:])
	}

	var (
		n          int
		lastFuncID = abi.FuncIDNormal
		skip       = pcBuf[0]
		// skipOrAdd skips or appends retPC to newPCBuf and returns true if more
		// pcs can be added.

	return persistentalloc(n, 0, &memstats.other_sys)
}

// FPCallers works like Callers and uses frame pointer unwinding to populate
// pcBuf with the return addresses of the physical frames on the stack.
func FPCallers(pcBuf []uintptr) int {
	return fpTracebackPCs(unsafe.Pointer(getfp()), pcBuf)
}

const FramePointerEnabled = framepointer_enabled

var (
	IsPinned      = isPinned