Log Message:
---
Tweak elog.c's logic for promoting errors into more severe errors.
Messages of less than ERROR severity should never be promoted (this
fixes Gaetano Mendola's problem with a COMMERROR becoming a PANIC,
and is obvious in hindsight anyway). Do all promotion in errstart
not e
Log Message:
---
On further consideration, there's another problem here: the existing
elog() emulation code always calls errstart with ERROR error level.
This means that a recursive error call triggered by elog would do
MemoryContextReset(ErrorContext), whether or not this was actually
appr
