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(parent: ddb93ca) | patch

Fix elog.c to avoid infinite recursion (leading to backend crash) when

Fix elog.c to avoid infinite recursion (leading to backend crash) when
log_min_error_statement is active and there is some problem in logging the
current query string; for example, that it's too long to include in the log
message without running out of memory. This problem has existed since the
log_min_error_statement feature was introduced. No doubt the reason it
wasn't detected long ago is that 8.2 is the first release that defaults
log_min_error_statement to less than PANIC level.
Per report from Bill Moran.

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