Live data from Hacker News

'Text bomb' is latest Apple bug

bbc.com

111–113 of 113 posts

Re: 'Text bomb' is latest Apple bug

#111
post #109

Earlier quoted context omitted.

Yes, that's what I meant by "some unicode type of thing.... reminiscing to an old bug emerged two years ago" in my last post... But on the hand, note the strong pattern of "0xCC" and "0xCD" (could be a coincidence to the x86 Breakpoint/INT code), pacing at a fixed distance throughout the code, as well as the numeric characteristics those parameters (or simply garbage code) to the "0xCC" and "0xCD" exhibit. I just fee…

I saw a tweet about what it looks like (in some piece of software that at least manages to render something): https://twitter.com/BagusAlexandria/status/95347388267712921... The fact that the embellished t's form these big overlapping blocks makes me think that it's hitting the worst-case behavior of some text layout algorithm. I don't understand what all the hex digits and apostrophes are for, though.

I don't have a spare ios system at hand right now to do more testing on this bug (if the bug is inside the library code and not at the API level, then an emulator usually would not be able to replicate the problem in the same way a real system produces)...

hence I can only make guesses...if I had a spare one, I would try to modify the content of code and see what would happen (do things such as reducing the code size -- most of the code are repetitive -- and see what would happen if we only retain the core part; or only retain the first half of the entire code -- those 0xCC and 0xCD part; or only retain the second half, those displayable ascii chars)...trim the code down to smaller units and test on them individually (in the same sense as modular testing).

Re: 'Text bomb' is latest Apple bug

#113
post #53

Earlier quoted context omitted.

and yet again they don't care about older iOS versions for people who don't want to brick their phones with updates

I'm really curious to know how you think they can possibly do that without you having to update your phone. Care to explain?

see @ClassyJacket response basically release ios 10.3.4
Post reply on HN