Re: How to access initialized values of global variables

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Thanks a lot. :)

FOR_EACH_CONSTRUCTOR_ELT worked.
I can access individual fields and their values.


On Wednesday 09 May 2012 11:50 PM, Ian Lance Taylor wrote:
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



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