EXC_BAD_ACCESS on returning an int?

[Ian Havelock]

Hi All,

I've just started to learn my way around Cocoa but I've come across an  
error message that I don't understand and googling hasn't really shed  
any light on the subject.

I have defined a simple polygon class with 3 int's, called  
PolygonShape.  When debugging I can see that I am setting the  
properties correctly, but when I try to output the object's variables  
using NSLog I receive an EXC_BAD_ACCESS error?

When it hits the NSLog line in 'PolygonShape Testing.m', it goes  
through (from the right) returning maximumNumberOfSides,  
minimumNumberOfSides and numberOfSides, but when it hits the closing }  
after return numberOfSides I get the EXC_BAD_ACCESS error?

As I'm using int's and not string Objects such as NSString I don't see  
how it could be memory management related unless there is something  
I'm missing?


Running…
Program received signal:  “EXC_BAD_ACCESS”.
(gdb)




I apologise for posting such a lengthy email.




//  PolygonShape.h

#import <Cocoa/Cocoa.h>

@interface PolygonShape : NSObject

{
        int numberOfSides;
        int minimumNumberOfSides;
        int maximumNumberOfSides;
}

@property int numberOfSides;
@property int minimumNumberOfSides;
@property int maximumNumberOfSides;


- (int)numberOfSides;
- (void)setNumberOfSides:(int)numberOfSides;

- (int)minimumNumberOfSides;
- (void)setMinimumNumberOfSides:(int)minimumNumberOfSides;

- (int)maximumNumberOfSides;
- (void)setMaximumNumberOfSides:(int)maximumNumberOfSides;

@end







// PolygonShape.m


#import "PolygonShape.h"


@implementation PolygonShape

@synthesize numberOfSides;
@synthesize minimumNumberOfSides;
@synthesize maximumNumberOfSides;


- (int)numberOfSides {
        return numberOfSides;
}

- (void)setNumberOfSides:(int)value {
                numberOfSides = value;
}


- (int)minimumNumberOfSides {
        return minimumNumberOfSides;
}

- (void)setMinimumNumberOfSides:(int)value {    
        minimumNumberOfSides = value;
}


- (int)maximumNumberOfSides {
        return maximumNumberOfSides;
}

- (void)setMaximumNumberOfSides:(int)value {
        maximumNumberOfSides = value;
}

@end










// PolygonShape Testing.m

#import <Foundation/Foundation.h>
#import "PolygonShape.h"


void PrintPolygonInfo()
{
        PolygonShape *poly1 = [[PolygonShape alloc] init];

        [poly1 setMinimumNumberOfSides:3];
        [poly1 setMaximumNumberOfSides:12];
        [poly1 setNumberOfSides:6];
        
	NSLog(@"Number of Sides: %@,  Min: %@,  Max: %@", [poly1  
numberOfSides], [poly1 minimumNumberOfSides], [poly1  
maximumNumberOfSides]);

}


int main (int argc, const char * argv[]) {
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
        
    PrintPolygonInfo(); 

    [pool drain];
    return 0;
}






Many Thanks,
Ian_______________________________________________

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