Hi,
When I alloc and init a NSString the following way, there is warning
that:
Potential leak of an object allocated on line 526 and stored in
sizeDisp.
1. Method returns an Objective-C object with a +1 retain count
(owning reference).
2. Object returned to caller as an owning reference (single retain
count transferred to caller).
3. Object allocated on line 526 and stored into 'sizeDisp' is
returned from a method whose name
('tableView:objectValueForTableColumn:row:') does not contain 'copy'
or otherwise starts with 'new' or 'alloc'. This violates the naming
convention rules given in the Memory Management Guide for Cocoa
(object leaked).
The code is as follows:
if ([[tableColumn identifier] isEqual:@"Size"] == YES)
{
NSString *sizeDisp;// line 526
NSNumber *size = [data objectForKey:@kDeviceSize];
unsigned long long sizeInBytes = [size
unsignedLongLongValue];
if (sizeInBytes < 1000*1000)
{
sizeDisp = [[NSString alloc] initWithFormat:@"%.2f KB", ((float)
sizeInBytes/1000)];
}
else if (sizeInBytes < 1000*1000*1000)
{
sizeDisp = [[NSString alloc] initWithFormat:@"%.2f MB", ((float)
sizeInBytes/(1000*1000))];// warning number 1 (as listed above)
}
else
{
sizeDisp= [[NSString alloc] initWithFormat:@"%.2f GB", ((float)
sizeInBytes/(1000*1000*1000))];
}
return sizeDisp;// warning 2 & 3 (as listed above)
}
When I do sizeDisp = [NSString stringWithFormat:@"%.2f MB", ((float)
sizeInBytes/(1000*1000))];
The warning disappears in the next build and analyze.
Can I hope for a small analysis of the above from anybody?
Thanks,
Nick
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