Re: Crashes inside CFStringDeallocate
Re: Crashes inside CFStringDeallocate
- Subject: Re: Crashes inside CFStringDeallocate
- From: Jack Brindle <email@hidden>
- Date: Fri, 25 May 2018 15:30:51 -0700
Not necessarily. I have never seen a guarantee that the C++ string functions
output their data in the exact format that [NSString
stringWithCharacters:length:] needs as an input. As you discovered, getting
UTF8 from the C++ string does give you proper data for the corresponding
NSString creator method.
Assuming things are compatible between C++ and Cocoa methods usually leads to
bug reports at the very least.
Jack
> On May 25, 2018, at 2:18 PM, Vojtěch Meluzín <email@hidden>
> wrote:
>
> Ok so I got a solution - it's the utf16 indeed. When I use [NSString
> stringWithUTF8String] instead, it doesn't crash. Considering it does that
> only on 10.10 (and probably older), it seems like OSX malfunction... oh
> well... Fortunately no big deal.
>
> Cheers!
> Vojtech
> www.meldaproduction.com
>
> 2018-05-25 22:49 GMT+02:00 Vojtěch Meluzín <email@hidden>:
>
>> Thanks for the reply Ken. I don't really know what Zombies instrument is,
>> I'll check. The GetLength returns the number of UTF-16 characters (hence
>> half of the buffer length), not including zero terminator.
>>
>> Cheers!
>> Vojtech
>>
>> 2018-05-25 16:26 GMT+02:00 Ken Thomases <email@hidden>:
>>
>>> On May 25, 2018, at 5:44 AM, Vojtěch Meluzín <email@hidden>
>>> wrote:
>>>>
>>>> I have received a few cases like the trace below - it always happens in
>>> OSX
>>>> 10.10 and runModalForWindow and crashes in CFStringDeallocate. Any ideas
>>>> what that could be?
>>>
>>> Have you run your app with the Zombies instrument?
>>>
>>>> […] NSStrings, which are
>>>> probably the issue here are always created from our MString like this:
>>>>
>>>> const unichar *utf16 = (const unichar *)s.GetUTF16();
>>>> return [NSString stringWithCharacters: utf16 length: s.GetLength()];
>>>
>>> Does MString::GetLength() return the length in UTF-16 code units (as
>>> opposed to, say, UTF-8 code units)?
>>>
>>> Regards,
>>> Ken
>>>
>>>
>>
> _______________________________________________
>
> Cocoa-dev mailing list (email@hidden)
>
> Please do not post admin requests or moderator comments to the list.
> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>
> Help/Unsubscribe/Update your Subscription:
>
> This email sent to email@hidden
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden