autoreleased with no pool in place - NO new thread is started

objc[23601]: Object 0x12b090f0 of class __NSCFSet autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug

Why would the following code section print the leak error above?

+ (BOOL)getSkipFlag
{

    NSUserDefaults* defs = [NSUserDefaults standardUserDefaults];
    if ( ![defs objectForKey:_BOOK_ID] )
    {
        [defs setObject:@"yyyy" forKey:_BOOK_ID];

        [defs synchronize];
    }

    if ( ![[defs objectForKey:_BOOK_ID] isEqualToString:@"xxxx"] )
    {
        return NO;
    }

    return skipFlag;
}

usage

if ( ![ClassXYZ getSkipFlag] )
....

I don't use a new thread so I should not have a new autorelease pool set up.

Note: NSString *temp = [[NSBundle mainBundle] pathForResource:_CONFIG_PLIST ofType:@"plist"]; - would print the same error I am using iOS 5.1

Thanks for any insight.

UPDATE: ClassXYZ.m ... static BOOL skipFlag = NO;

setter: + (void)setSkipFlag:(BOOL)boolValue { skipFlag = boolValue; }

usage: [ClassXYZ setSkipFlag:YES];

used in static void convert_uri_to_file_name(struct mg_connection *conn, const char *uri, char *buf, size_t buf_len)

Omar you had a good point about where it is used. It turns out if I ClassXYZ's own instance methods for example, it works without errors.

Answers


just out of curiosity, if you put the function call inside an @autorelease that log should go away


Generally, The autorelease pool for main thread would be created at the first line of main function. Anything that runs before main function would see that the autorelease pool is absent.

+load function is one reason that would cause the leaks, because it runs before main function. If that's the case, just consider using +initialize instead.


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