https://bugs.exim.org/show_bug.cgi?id=1918
Philip Hazel <ph10@???> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |WONTFIX
Status|NEW |RESOLVED
--- Comment #6 from Philip Hazel <ph10@???> ---
(In reply to Giuseppe D'Angelo from comment #4)
>
> The right way to do this is using enums:
>
> enum pcre2_config_what { pcre2_config_this, pcre2_config_that };
> int pcre2_config(enum pcre2_config_what, void *where);
> /* now I must pass exactly one of the enumerators or the code doesn't
> compile */
Thank you for the full explanation. The problem is that I am too old. I came to
C from BCPL, and always considered enums to be like BCPL's "manifest" (which is
really like #define) instead of being a special kind of type. Old habits die
hard!
> Of course it's too late to do this now. This is an API and ABI break. Maybe
> for PCRE3? :P
It is indeed too late - and it's been like this in PCRE1 since it was first
released in 1997 without anybody pointing out this issue. No wonder I just
copied it over to PCRE2. Without changing pcre2_config() etc. there is no point
in changing the #defines to an enum. I am going to close this issue "wontfix",
but I have noted the issue on the long-term wish-list so that it won't be
entirely forgotten if there ever is another API/ABI break.
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