Owi.Traptype t = | Out_of_bounds_table_access| Out_of_bounds_memory_access| Undefined_element| Uninitialized_element of int| Integer_overflow| Integer_divide_by_zero| Element_type_error| Unreachable| Indirect_call_type_mismatch| Extern_call_arg_type_mismatch| Extern_call_null_arg| Memory_leak_use_after_free| Memory_heap_buffer_overflowval to_string : t -> string