Aha! Thanks for the clarification! :-)
Best, Marcel Am 23.11.2022 03:54:55 schrieb David T. Lewis lewis@mail.msen.com: On Tue, Nov 22, 2022 at 10:58:09AM +0100, Marcel Taeumel wrote:
Hi all --
Should the following work?
No, it should not work. And yes, it will lock up the image (confirmed on Linux 64-bit).
class := DoubleByteArray. size := 10. dummy := 123.
array := class new: size. array?? atAllPut: dummy.
(DataStream newFileNamed: 'numbers') nextPut: array; close.
stream := DataStream fileNamed: 'numbers'.?? load := stream readArray. stream close. load explore
DataStream>>readArray is a private method that will do bad things if you call it at the wrong time. In the example above, it reads a number from the wrong place in the stream (because it should not have been called at that point). This number is used to allocate an array with over 150 million 8-byte slots, leading to the apparent image lockup.
The fix would be to put the private methods into a method category labeled "private".
Dave