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Commita0dab33

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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 thecurrent query string; for example, that it's too long to include in the logmessage without running out of memory. This problem has existed since thelog_min_error_statement feature was introduced. No doubt the reason itwasn't detected long ago is that 8.2 is the first release that defaultslog_min_error_statement to less than PANIC level.Per report from Bill Moran.
1 parentddb93ca commita0dab33

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‎src/backend/utils/error/elog.c‎

Lines changed: 7 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -42,7 +42,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/error/elog.c,v 1.189 2007/07/19 21:58:12 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/utils/error/elog.c,v 1.190 2007/07/21 22:12:04 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -240,10 +240,15 @@ errstart(int elevel, const char *filename, int lineno,
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/*
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* If we recurse more than once, the problem might be something broken
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* in a context traceback routine.Abandon them too.
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* in a context traceback routine. Abandon them too. We also
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* abandon attempting to print the error statement (which, if long,
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* could itself be the source of the recursive failure).
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*/
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if (recursion_depth>2)
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{
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error_context_stack=NULL;
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debug_query_string=NULL;
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}
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}
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if (++errordata_stack_depth >=ERRORDATA_STACK_SIZE)
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{

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