Re: Arc: Switch case is in protected scope
Re: Arc: Switch case is in protected scope
- Subject: Re: Arc: Switch case is in protected scope
- From: ChanMaxthon <email@hidden>
- Date: Wed, 23 Oct 2013 01:08:29 +0800
ARC have more insertion points - beginning of scope retaining all passed-in arguments or used objects, call point creating objects, and end of scope (auto)releasing objects. A missed retain causes race issues, a missed (auto)release leaks objects and an extra release makes dangling pointers, possibly busts a lot later making it almost impossible to trace and debug.
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> On 2013年10月23日, at 0:57, Scott Ribe <email@hidden> wrote:
>
>> On Oct 22, 2013, at 10:46 AM, Maxthon Chan <email@hidden> wrote:
>>
>> As I said, either ARC or C++ objects with constructors and destructors requires compiler to insert code into the beginning and ending of the current scope
>
> For C++, the constructor is inserted at the call point, not at the beginning of the scope. Which actually makes it more clear what the problem with switch is. (If the constructor were inserted at the beginning of the scope, there would be no problem with potentially skipping over it.)
>
> --
> Scott Ribe
> email@hidden
> http://www.elevated-dev.com/
> (303) 722-0567 voice
>
>
>
>
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