Re: Record representation : components order

[sjw <simon.j.wright@mac.com>]

On Jul 5, 4:14 am, Hibou57 (Yannick Duchêne)
<yannick_duch...@yahoo.fr> wrote:

> N.B. pragma Convention is required when the C specs make use of some
> type whose size depends on some configuration. This is not convenient
> to use “ at range ” in this case. This is the reason of this thread.

No good telling the Ada compiler to use a size (or alignment, or ...)
that the C compiler only knows because of some #defines that are only
visible to the C compilation!

For tcladashell, I have a Tcl script which generates a C program which
generates an Ada spec (the reason for the Tcl script is that there are
at least 3 different kinds of definition required, for several
variables. I suppose I could have used C macros ...). Sample output:

package Tcl_Record_Sizes is

   --  Size macros defined in tcl.h.

   NUM_STATIC_TOKENS : constant := 20;

   TCL_DSTRING_STATIC_SIZE : constant := 200;

   --  Sizes of structs defined in tcl.h.

   Tcl_CallFrame_Size : constant := 44;
   Tcl_CallFrame_Alignment : constant := 4;