ObjFW  Diff

			i++;

		while ([[array objectAtIndex: j] compare: pivot] !=
		    OF_ORDERED_ASCENDING && j > left)
			j--;

		if (i < j)
			[array exchangeObjectAtIndex: i
				   withObjectAtIndex: j];
	} while (i < j);

	if ([[array objectAtIndex: i] compare: pivot] == OF_ORDERED_DESCENDING)
		[array exchangeObjectAtIndex: i
			   withObjectAtIndex: right];

	if (i > 0)
		quicksort(array, left, i - 1);
	quicksort(array, i + 1, right);
}

@implementation OFMutableArray_placeholder

	    BOOL *stop) {
		[self replaceObjectAtIndex: index
				withObject: block(object, index, stop)];
	}];
}
#endif

- (void)exchangeObjectAtIndex: (size_t)index1
	    withObjectAtIndex: (size_t)index2
{
	id object1 = [self objectAtIndex: index1];
	id object2 = [self objectAtIndex: index2];

	[object1 retain];
	@try {
		[self replaceObjectAtIndex: index1

{
	size_t i, j, count = [self count];

	if (count == 0 || count == 1)
		return;

	for (i = 0, j = count - 1; i < j; i++, j--)
		[self exchangeObjectAtIndex: i
			  withObjectAtIndex: j];
}

- (void)makeImmutable
{
}
@end