Home/ Questions/Q 4322398
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-21T08:52:05+00:00

The following code for some reason poradically works. I have checked the URL so

  • 0

The following code for some reason poradically works. I have checked the URL so many times it’s not funny (It returns plain text that I would like to parse). The code was 100% functional then it just stopped working and started giving me a EXC_BAD_ACCESS error.

There is nothing in the debugging output to post other than a line saying the output is switching to the process twice. (Except sometimes something about a double release.)

So far (as much as I can remember) I have tried:

  • Reinstalling the app – it only has problems on the ‘Default’ run (not the first Run/initiate Run.)
  • Running the URL in the browser (chrome, firefox, IE…)
  • Putting the call in a @try / @catch block
  • Using retain
  • Using a temp NSAutoreleasePool
  • Splitting up / separating the elements of the call (along with loggin Everything – once it hits the error, nothing gets logged)
  • Using the dataWithContentsOfURL functions with the above
NSAutoreleasePool *tmpPool = [[NSAutoreleasePool alloc] init];

NSString *url_string = [self getNormalVersionDownloadURL];
NSLog(@"urlString: -%@-", url_string);
NSError *er;

NSURL *the_URL = [[NSURL URLWithString:url_string] retain];
NSString *version_String =  [NSString stringWithContentsOfURL:the_URL encoding:NSASCIIStringEncoding error:&er];

NSLog(@"verions_string: -%@-", version_String);

if ([version_String length] < 16)
    return;

[tmpPool release];

(NSAutoreleasePool and autorelease added due to http://discussions.apple.com/thread.jspa?threadID=1667544)

(Cashed page – http://webcache.googleusercontent.com/search?q=cache:8D7zlQdG9PMJ:discussions.apple.com/thread.jspa%3FthreadID%3D1667544+http://discussions.apple.com/thread.jspa%3FthreadID%3D1667544&cd=1&hl=en&ct=clnk&gl=us&source=www.google.com)

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    discussions.apple.com is currently down so I cannot read the discussion thread. At any rate:

    NSString *url_string = [[self getNormalVersionDownloadURL] autorelease];

    Does -getNormalVersionDownloadURL return an owned or a non-owned object? You only send -autorelease if the method returns an owned object.

    NSError **er;

    This should be NSError *er instead, or it should be initialised with the address of a variable of type NSError *. Since the latter is uncommon and unnecessary, the following assumes NSError *er.

    NSURL *the_URL = [[NSURL URLWithString:url_string] autorelease];

    +URLWithString: returns an NSURL object that you don’t own, hence you don’t (auto)release it.

    version_String = [[NSString stringWithContentsOfURL:the_URL 
    encoding:NSASCIIStringEncoding error:er] autorelease]; //ERROR occurs here

    Two problems:: +stringWithContentsOfURL: returns an NSString object that you don’t own, hence you don’t (auto)release it. Furthermore, the third parameter should be &er instead of er.

    • 0