Ranier Vilela <ranier(dot)vf(at)gmail(dot)com> writes:
> elog and errmsg_internal, permits use as proposed by the patch,
> does it mean that errmsg, does not allow and does not do the same job as
> snprintf?
Yes. errmsg() strings are captured for translation. If they contain
platform-dependent substrings, that's a problem, because only one variant
will get captured. And INT64_FORMAT is platform-dependent.
We have of late decided that it's safe to use %lld (or %llu) to format
int64s everywhere, but you then have to cast the printf argument to
match that explicitly. See commit 6a1cd8b92 for precedent.
regards, tom lane