wrong behaviour of <struct frame>

[alin soare]

I defined within the struct frame an integer variable

int ct;

If I define it immediately after the menu_bar_vector, it is initialized
somewhere with the pointer value of Qnil. (&Qnil)

      Only the X toolkit version uses this.  */

   Lisp_Object menu_bar_vector;
+
+    int ct;


In this case, if I change the value f->ct, emacs crashes with segmentation
fault, generated by the garbage collector. Why , as time as I initialize a
variable defined by myself ?


-----------------------------------------

If I define it at the end of struct frame, id est immediately after the
fieldforeground_pixel,

/* All display backends seem to need these two pixel values. */
  unsigned long background_pixel;
  unsigned long foreground_pixel;
+
+    int ct;
}

everything works fine in that case.

I wish to ask you to suggest me if you can, what happens when I define the var.
'ct' inside the struct frame.



Alin.