[Dynamite] ANSI C question

[Ian Holmes]

GLib uses casts to implement "private" data, e.g.

struct _GArray
{
  gchar *data;
  guint len;
};

in "glib.h", which is then casted to

struct _GRealArray
{
  guint8 *data;
  guint   len;
  guint   alloc;
  guint   elt_size;
  guint   zero_terminated : 1;
  guint   clear : 1;
};

Do either of you know if this is strict ANSI, i.e. can we be sure that the
first two fields of _GArray (data & len) are mapped to the same memory
locations as data and len in _GRealArray in all C compilers?

If so it makes life a lot easier...

Ian

-- 
Ian Holmes  ....  Howard Hughes Medical Institute  ....  ihh@fruitfly.org