// gcc -framework Foundation -fobjc-exceptions -Os -arch i386 -Wextra volatile.m
//
// volatile.m:36: warning: variable 'thePoint' might be clobbered by 'longjmp' or 'vfork'

// gcc -framework Foundation -fobjc-exceptions -Os -arch ppc -Wextra volatile.m
// gcc -framework Foundation -fobjc-exceptions -Os -arch i386 volatile.m
// gcc -framework Foundation -fobjc-exceptions -Os -arch i386 -Wextra -D MY_VAR_IS_VOLATILE volatile.m
//
// no warning

#import <Foundation/Foundation.h>

struct MyPoint
{
	float x;
	float y;
};

@interface MyObject : NSObject {}
+(void) doNothingWithPoint:(struct MyPoint)aPoint;
@end

@implementation MyObject
+(void) doNothingWithPoint:(struct MyPoint)aPoint {}
@end

int main(int argc, const char * argv[])
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
	
    @synchronized(pool)
	{
#ifdef MY_VAR_IS_VOLATILE
		volatile struct MyPoint thePoint;
#else
		struct MyPoint thePoint;
#endif
		
		thePoint.x = 0.0;
		thePoint.y = 0.0;
		
		[MyObject doNothingWithPoint:thePoint];
	}
	
    [pool release];
	
    return 0;
}