On Thu, Feb 05, 2009 at 10:29:19AM -0800, Christopher Li wrote:
> Setting expr->cast_type = NULL here is not straightly necessary right?
> The expr is EXPR_SIZEOF type, the expr->cast_type is not used in
> evaluation_sizeof. Of course it doesn't hurt, I just want to get a confirm
> that I understand it correct.y.
Take a look at evaluate_type_information(). If ->cast_type is not NULL,
it won't even look at ->cast_expression. For sizeof (struct foo){0,1} that's
fine (you end with with sizeof(struct foo), essentially), but for
sizeof(struct foo){0,1}.x that'll give you the wrong answer.
IOW, it is necessary.
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