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"David Mathog" <mathog@xxxxxxxxxxx> wrote in message
news:fsj71l$1hl$1@xxxxxxxxxxxxxxxxxxx
> Bartc wrote:
>> I'm porting some code from a language that allows casual aliases to
>> struct fields and between variables.
>>
>> I can duplicate some of this with unions but the results look inelegant.
>> The first example involves structs:
>
> By "casual aliases" do you mean that it sets two variables "one" and "two"
> to both reference the same storage area "one_two_data"?
Yes. Although the types could be different.
> Rather than using Union it may be easier to just code all of these aliases
> into your program explicitly, like:
>
> int one_two_data;
> int *one = &one_two_data;
> int *two = &one_two_data;
>
> If you don't want to have to write "*one" everywhere then you can
> use instead:
>
> int *fake_one = &one_two_data;
> int *fake_two = &one_two_data;
> #define one (*fake_one)
> #define two (*fake_two)
>
> then use "one" and "two" as the variables. So long as all the casual
> aliases are to identical data types at that storage location this should
> work fine.
I suppose using pointers to the same memory was always an option, if I
couldn't avoid the extra dereference step. But at least it makes it
possible. I will try out your idea.
--
Bart
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