func dwarfSize(dt dwarf.Type, ptrSize int64) int64 {
	s := dt.Size()
	if s >= 0 {
		return s
	}
	switch x := dt.(type) {
	case *dwarf.FuncType:
		return ptrSize // Fix for issue 21097.
	case *dwarf.ArrayType:
		return x.Count * dwarfSize(x.Type, ptrSize)
	case *dwarf.TypedefType:
		return dwarfSize(x.Type, ptrSize)
	default:
		panic(fmt.Sprintf("unhandled: %s, %T", x, x))
	}
}
func dwarfSize(dt dwarf.Type, ptrSize int64) int64 {
	s := dt.Size()
	if s >= 0 {
		return s
	}
	switch x := dt.(type) {
	case *dwarf.FuncType:
		return ptrSize // Fix for issue 21097.
	case *dwarf.ArrayType:
		return x.Count * dwarfSize(x.Type, ptrSize)
	case *dwarf.TypedefType:
		return dwarfSize(x.Type, ptrSize)
	default:
		panic(fmt.Sprintf("unhandled: %s, %T", x, x))
	}
}
// dwarfSize is used to compute the size of a DWARF type.
// dt.Size() is wrong when it returns a negative number.
// This function implements just enough to correct the bad behavior.