Re: How to Emulate C++ Macro with Static Local Variable?

[tmoran@acm.org]

>The whole design is wrong in the C++ to begin with. If you want to have
>a memoizing function, the job of caching old values belongs to the function
>itself, not scattered in macros and variables all over the place.
  I quite agree.  And I don't understand how the "procedure Subp" is
supposed to be used.
  The OP does raise an interesting question, though.  Essentially he wants
to create an array indexed by particular ranges of the Instruction Counter,
and he doesn't want the trouble or error-proneness of having to include
specific marker code (eg, Where_I_Am := 27; or Saved_Info(72) :=...)
type code to mark different areas with unique numbers.  I don't see how
one might do that without a preprocessor, and I don't see how one could
(portably) get hold of the Instruction Counter for storage and later
comparison, in Ada code.
In the presence of tasking of course, it would be disaster waiting to
happen anyway.