Re: stack module

[Marc Nieper-Wißkirchen]

Hi Bruno,

> This is perfectly acceptable for Gnulib. It has debuggability and type safety.

Perfect. Then I will come up with a module in this form.

> You have precedent e.g. in lib/diffseq.h and lib/aligned-malloc.h.

Good to know; I hadn't taken a look at these sources yet.

> You can even omit the 'GL_' prefix from the macro names. The user can #undef
> the macros after including the file; therefore there is nearly no risk of
> collision with macros defined by other code.

Or the included file #undefs the macros as in lib/diffseq.h.

Speaking of prefixes: As macro names (and other names) starting with
"_GL_" are not officially allowed by ISO C, I think it makes sense to
think of a new convention for new sources (while old sources could
later be updated incrementally).

For example, one could use the prefix "GL__" (double underscore) for
(future) private identifiers.

Marc