ObjFW  Diff

Class
objc_allocateClassPair(Class superclass, const char *name, size_t extraBytes)
{
	struct objc_class *class, *metaclass;
	Class iter, rootclass = Nil;

	if (extraBytes > LONG_MAX)
		OBJC_ERROR("extraBytes out of range!");

	if ((class = calloc(1, sizeof(*class))) == NULL ||
	    (metaclass = calloc(1, sizeof(*class))) == NULL)
		OBJC_ERROR("Not enough memory to allocate class pair for class "
		    "%s!", name);

	class->isa = metaclass;
	class->superclass = superclass;
	class->name = name;
	class->info = OBJC_CLASS_INFO_CLASS;
	class->instanceSize = (superclass != Nil ?
	    superclass->instanceSize : 0) + (long)extraBytes;