Re: How to access initialized values of global variables

[Ian Lance Taylor <iant@xxxxxxxxxx>]

Swati <swatirathi@xxxxxxxxxxxxxx> writes:

> I am trying to fetch the initialized values of global variables.
> For eg : int i = 10;
>
> I am able to extract the value using DECL_INITIAL.
> But when I have a case like below,
>
> struct node
> {
>         int x;
>         int y;
> };
>
> struct node n1=
> {
>         99,
>         88,
> };
>
> I get value as {.x=99, .y=88}
>
> How should I iterate to fetch 99 and 88 individually?
> In a way I want to access individual variables initialized values.
> Can someone tell me the way to do it.

I assume you are talking about a GCC plugin here.

The DECL_INITIAL should be a CONSTRUCTOR.  CONSTRUCTOR_NELTS is the
number of elements and CONSTRUCTOR_ELTS is the elements themselves.  You
can iterate over them using FOR_EACH_CONSTRUCTOR_ELT, which will give
you the index and value for each entry in the constructor.  The index
will be a FIELD_DECL.

Ian