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	If RelationBuildDesc() fails to open a critical system index, PANIC with
a relevant error message instead of just dumping core. Odd that nobody reported this before Darren Reed.
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								src/backend/utils/cache/relcache.c
									
									
									
									
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								src/backend/utils/cache/relcache.c
									
									
									
									
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							@@ -8,7 +8,7 @@
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 *
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 *
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 * IDENTIFICATION
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 *	  $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.230.2.4 2006/11/05 23:40:38 tgl Exp $
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 *	  $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.230.2.5 2008/02/27 17:44:41 tgl Exp $
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 *
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 *-------------------------------------------------------------------------
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 */
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@@ -2239,7 +2239,10 @@ RelationCacheInitializePhase2(void)
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#define LOAD_CRIT_INDEX(indexoid) \
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		do { \
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			ird = RelationBuildDesc((indexoid), NULL); \
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			ird = RelationBuildDesc(indexoid, NULL); \
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			if (ird == NULL) \
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				elog(PANIC, "could not open critical system index %u", \
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					 indexoid); \
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			ird->rd_isnailed = true; \
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			ird->rd_refcnt = 1; \
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		} while (0)
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