Joe Conway <mail@joeconway.com> writes:
> On 4/11/21 10:13 AM, Tom Lane wrote:
>> Indeed. elog.h already provides a "PGERROR" macro to use for restoring
>> the value of ERROR. We have not heard of a need to do anything special
>> for WARNING though --- maybe that's R-specific?
> R also defines WARNING in its headers.
Ah.
> Would an equivalent "PGWARNING" be something we are open to adding and
> back-patching?
It's not real obvious how pl/r could solve this in a reliable way
otherwise, so adding that would be OK with me, but I wonder whether
back-patching is going to help you any. You'd still need to compile
against older headers I should think. So I'd suggest
(1) add PGWARNING in HEAD only
(2) in pl/r, do something like
#ifndef PGWARNING
#define PGWARNING 19
#endif
which should be safe since it's that in all previous supported
versions.
Also, I notice that elog.h is wrapping PGERROR in #ifdef WIN32,
which might be an overly constricted view of when it's helpful.
regards, tom lane
