[gvd-users] New to gvd. Problem displaying certain structures

[gvd-users@lists.act-europe.fr]

hi
first of all, you've done a great job with gvd. keep up the good/great work.

Now my problem.

I have  a structure and when i double click in it's pointer, it's doesn't
show the structure.

my structure is the following:

typedef struct typeNode {
    NodeType type;              /* type of node */
    void *user;                 /* pointer to any user data */
    int attrib;                 /* user defined attributes */
    union {
      int i;                    /* value of literal integer */
      double r;                 /* value of literal real number */
      char *s;                  /* value of literal string (null
terminated) */

      struct {
        int size;               /* size of data */
        void *data;             /* pointer to data */
      } d;                      /* value of any opaque data (untyped) */
      struct {
        int num;                /* number os subnode in this node */
        struct typeNode *n[1];  /* subnodes (expandable) */
      } sub;
    } value;
} Node;

For example, in this function,
Node *subNode(int oper, int nops, ...) {
    va_list ap;
    Node *p = newNode(nodeOpr, oper, nops);
    int i;

    if (p == NULL) return 0;
    va_start(ap, nops);
    for (i = 0; i < nops; i++)
        p->value.sub.n[i] = va_arg(ap, Node*);
    va_end(ap);
    return p;
}

When i do "graph display (*p)" after the node is created its doesn't show
anything in canvas.

But when i do "print *p" it shows this:
$8 = |type = nodeStr, usr = 0x0, attrib =43, value =|i =0, r=0, s=0x0, d=
| size = 0, data = 0x0|, sub = |num =0, n = |0x0||||


I've made a simple test program with a diferent structure but with typedef
and a union a it worked fine.

What could be the problem? If it can help i can put my program on-line.

I tried ddd  and it showed the structure correctly.

Thanks in advanced.
Joel