NSArray crashes on count

[mikejstein]

Hi all,

I'm stuck on something that I can't figure out.

I've got an NSArray. It's created with [[NSArray arrayWithArray:someotherrray] retain];

I pass it in to another object.

From within that object, I'm able to read the array just fine. Calling "NSLog(@"%@",myArray) shows me the array contents.

But, if I call [myArray count], the program crashes with no explanation. No EXEC_BAD_ACCESS, nothing. Just back to the GNU GDB discalaimer in the debugger console.

Any ideas?

[slahteine]

Originally Posted by mikejstein

But, if I call [myArray count], the program crashes with no explanation. No EXEC_BAD_ACCESS, nothing.

It could be getting trounced by something else, affecting some of the data structure, but not the contents. Try moving the declaration to another place - for example, make it a global temporarily, and see if the crash still occurs. If so, HMM! - but if not, then look around for buffer overruns and things that could be trashing memory beyond where they should.

[BrianSlick]

1. What is the purpose of using a convenience method if you are just going to manually retain anyway?

2. What is the line of code that crashes?

[smasher]

It's very strange to crash with no message at all - I'd check to make sure the debugger didn't stop on the error and prevent the error from getting printed (run > debugger) and check the OSX console for any hints (path: /Applications/Utilities/Console).

[ignazioc]

mmm..this is a strange error.
post here the code. maybe we can help you.

[MMan]

Same thing happening with me. I can't count but I can use objectAtIndex: and get the objects from the array. No error message displayed in console just cuts out of the simulator.

[ianian]

I'm no expert (at all) but I've found that this will happen if you try to put it into a string in the wrong way, for example:

NSLog([NSString stringWithFormat:@"%@", [shotList count]]);

Will crash with no error.

NSLog([NSString stringWithFormat:@"%i", [shotList count]]);

Will work a charm

Hope that helps,
Ian

[brmz]

Originally Posted by ianian

I'm no expert (at all) but I've found that this will happen if you try to put it into a string in the wrong way, for example:

NSLog([NSString stringWithFormat:@"%@", [shotList count]]);

Will crash with no error.

NSLog([NSString stringWithFormat:@"%i", [shotList count]]);

Will work a charm

Hope that helps,
Ian

Same problem, looked for hours and could not find it or logically explain the crash.

But this one solved it !

Thanx ianian!