special_hell

#import <Foundation/Foundation.h>
#define dispatch_if_available(queue, code) do{ \
	if(dispatch_async != NULL) { \
		dispatch_async(queue, ^(void) {\
			code\
		});\
	} else {\
		code\
	}\
} while(0)

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


	dispatch_if_available(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0), 
		int a = 0;
		a++;
		NSLog(@"a = %d", a);
	);
	[p release];
}