Error message editing in backend/access.

src/backend/access/common/heaptuple.c

@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.83 2002/09/27 15:04:08 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.84 2003/07/21 20:29:37 tgl Exp $
  *
  * NOTES
  *	  The old interface functions have been converted to macros
@@ -173,13 +173,11 @@ heap_attisnull(HeapTuple tup, int attnum)
 			case MinCommandIdAttributeNumber:
 			case MaxTransactionIdAttributeNumber:
 			case MaxCommandIdAttributeNumber:
+				/* these are never null */
 				break;
 
-			case 0:
-				elog(ERROR, "heap_attisnull: zero attnum disallowed");
-
 			default:
-				elog(ERROR, "heap_attisnull: undefined negative attnum");
+				elog(ERROR, "invalid attnum: %d", attnum);
 		}
 
 	return 0;
@@ -457,7 +455,7 @@ heap_getsysattr(HeapTuple tup, int attnum, bool *isnull)
 			result = ObjectIdGetDatum(tup->t_tableOid);
 			break;
 		default:
-			elog(ERROR, "heap_getsysattr: invalid attnum %d", attnum);
+			elog(ERROR, "invalid attnum: %d", attnum);
 			result = 0;			/* keep compiler quiet */
 			break;
 	}
@@ -581,8 +579,10 @@ heap_formtuple(TupleDesc tupleDescriptor,
 	int			numberOfAttributes = tupleDescriptor->natts;
 
 	if (numberOfAttributes > MaxTupleAttributeNumber)
-		elog(ERROR, "heap_formtuple: numberOfAttributes %d exceeds limit %d",
-			 numberOfAttributes, MaxTupleAttributeNumber);
+		ereport(ERROR,
+				(errcode(ERRCODE_TOO_MANY_COLUMNS),
+				 errmsg("number of attributes %d exceeds limit, %d",
+						numberOfAttributes, MaxTupleAttributeNumber)));
 
 	for (i = 0; i < numberOfAttributes; i++)
 	{
@@ -666,14 +666,11 @@ heap_modifytuple(HeapTuple tuple,
 	 * allocate and fill *value and *nulls arrays from either the tuple or
 	 * the repl information, as appropriate.
 	 */
-	value = (Datum *) palloc(numberOfAttributes * sizeof *value);
-	nulls = (char *) palloc(numberOfAttributes * sizeof *nulls);
+	value = (Datum *) palloc(numberOfAttributes * sizeof(Datum));
+	nulls = (char *) palloc(numberOfAttributes * sizeof(char));
 
-	for (attoff = 0;
-		 attoff < numberOfAttributes;
-		 attoff += 1)
+	for (attoff = 0; attoff < numberOfAttributes; attoff++)
 	{
-
 		if (repl[attoff] == ' ')
 		{
 			value[attoff] = heap_getattr(tuple,
@@ -683,13 +680,13 @@ heap_modifytuple(HeapTuple tuple,
 			nulls[attoff] = (isNull) ? 'n' : ' ';
 
 		}
-		else if (repl[attoff] != 'r')
-			elog(ERROR, "heap_modifytuple: repl is \\%3d", repl[attoff]);
-		else
-		{						/* == 'r' */
+		else if (repl[attoff] == 'r')
+		{
 			value[attoff] = replValue[attoff];
 			nulls[attoff] = replNull[attoff];
 		}
+		else
+			elog(ERROR, "unrecognized replace flag: %d", (int) repl[attoff]);
 	}
 
 	/*
@@ -699,6 +696,9 @@ heap_modifytuple(HeapTuple tuple,
 							  value,
 							  nulls);
 
+	pfree(value);
+	pfree(nulls);
+
 	/*
 	 * copy the identification info of the old tuple: t_ctid, t_self, and
 	 * OID (if any)

src/backend/access/common/indextuple.c

@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/common/indextuple.c,v 1.64 2003/02/23 06:17:12 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/common/indextuple.c,v 1.65 2003/07/21 20:29:37 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -52,8 +52,10 @@ index_formtuple(TupleDesc tupleDescriptor,
 #endif
 
 	if (numberOfAttributes > INDEX_MAX_KEYS)
-		elog(ERROR, "index_formtuple: numberOfAttributes %d > %d",
-			 numberOfAttributes, INDEX_MAX_KEYS);
+		ereport(ERROR,
+				(errcode(ERRCODE_TOO_MANY_COLUMNS),
+				 errmsg("number of index attributes %d exceeds limit, %d",
+						numberOfAttributes, INDEX_MAX_KEYS)));
 
 #ifdef TOAST_INDEX_HACK
 	for (i = 0; i < numberOfAttributes; i++)
@@ -158,8 +160,11 @@ index_formtuple(TupleDesc tupleDescriptor,
 	 * it in t_info.
 	 */
 	if ((size & INDEX_SIZE_MASK) != size)
-		elog(ERROR, "index_formtuple: data takes %lu bytes, max is %d",
-			 (unsigned long) size, INDEX_SIZE_MASK);
+		ereport(ERROR,
+				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+				 errmsg("index tuple requires %lu bytes, maximum size is %lu",
+						(unsigned long) size,
+						(unsigned long) INDEX_SIZE_MASK)));
 
 	infomask |= size;
 

src/backend/access/common/printtup.c

@@ -9,7 +9,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/common/printtup.c,v 1.74 2003/05/26 17:51:38 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/common/printtup.c,v 1.75 2003/07/21 20:29:38 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -273,7 +273,9 @@ printtup_prepare_info(DR_printtup *myState, TupleDesc typeinfo, int numAttrs)
 			fmgr_info(thisState->typsend, &thisState->finfo);
 		}
 		else
-			elog(ERROR, "Unsupported format code %d", format);
+			ereport(ERROR,
+					(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+					 errmsg("unsupported format code: %d", format)));
 	}
 }
 

src/backend/access/common/tupdesc.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/common/tupdesc.c,v 1.95 2003/06/15 17:59:10 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/common/tupdesc.c,v 1.96 2003/07/21 20:29:38 tgl Exp $
  *
  * NOTES
  *	  some of the executor utility code such as "ExecTypeFromTL" should be
@@ -417,7 +417,7 @@ TupleDescInitEntry(TupleDesc desc,
 						   ObjectIdGetDatum(oidtypeid),
 						   0, 0, 0);
 	if (!HeapTupleIsValid(tuple))
-		elog(ERROR, "Unable to look up type id %u", oidtypeid);
+		elog(ERROR, "cache lookup failed for type %u", oidtypeid);
 
 	/*
 	 * type info exists so we initialize our attribute information from
@@ -643,7 +643,7 @@ TypeGetTupleDesc(Oid typeoid, List *colaliases)
 		int			natts;
 
 		if (!OidIsValid(relid))
-			elog(ERROR, "Invalid typrelid for complex type %u", typeoid);
+			elog(ERROR, "invalid typrelid for complex type %u", typeoid);
 
 		rel = relation_open(relid, AccessShareLock);
 		tupdesc = CreateTupleDescCopy(RelationGetDescr(rel));
@@ -657,7 +657,9 @@ TypeGetTupleDesc(Oid typeoid, List *colaliases)
 
 			/* does the list length match the number of attributes? */
 			if (length(colaliases) != natts)
-				elog(ERROR, "TypeGetTupleDesc: number of aliases does not match number of attributes");
+				ereport(ERROR,
+						(errcode(ERRCODE_DATATYPE_MISMATCH),
+						 errmsg("number of aliases does not match number of attributes")));
 
 			/* OK, use the aliases instead */
 			for (varattno = 0; varattno < natts; varattno++)
@@ -676,11 +678,15 @@ TypeGetTupleDesc(Oid typeoid, List *colaliases)
 
 		/* the alias list is required for base types */
 		if (colaliases == NIL)
-			elog(ERROR, "TypeGetTupleDesc: no column alias was provided");
+			ereport(ERROR,
+					(errcode(ERRCODE_DATATYPE_MISMATCH),
+					 errmsg("no column alias was provided")));
 
 		/* the alias list length must be 1 */
 		if (length(colaliases) != 1)
-			elog(ERROR, "TypeGetTupleDesc: number of aliases does not match number of attributes");
+			ereport(ERROR,
+					(errcode(ERRCODE_DATATYPE_MISMATCH),
+					 errmsg("number of aliases does not match number of attributes")));
 
 		/* OK, get the column alias */
 		attname = strVal(lfirst(colaliases));
@@ -695,7 +701,9 @@ TypeGetTupleDesc(Oid typeoid, List *colaliases)
 						   false);
 	}
 	else if (functyptype == 'p' && typeoid == RECORDOID)
-		elog(ERROR, "Unable to determine tuple description for function returning \"record\"");
+		ereport(ERROR,
+				(errcode(ERRCODE_DATATYPE_MISMATCH),
+				 errmsg("unable to determine tuple description for function returning record")));
 	else
 	{
 		/* crummy error message, but parser should have caught this */

src/backend/access/gist/gist.c

@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/gist/gist.c,v 1.103 2003/05/27 17:49:45 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/gist/gist.c,v 1.104 2003/07/21 20:29:38 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -168,7 +168,7 @@ gistbuild(PG_FUNCTION_ARGS)
 	 * that's not the case, big trouble's what we have.
 	 */
 	if (RelationGetNumberOfBlocks(index) != 0)
-		elog(ERROR, "%s already contains data",
+		elog(ERROR, "index \"%s\" already contains data",
 			 RelationGetRelationName(index));
 
 	/* initialize the root page */
@@ -396,7 +396,7 @@ gistPageAddItem(GISTSTATE *giststate,
 	retval = PageAddItem(page, (Item) *newtup, IndexTupleSize(*newtup),
 						 offsetNumber, flags);
 	if (retval == InvalidOffsetNumber)
-		elog(ERROR, "gist: failed to add index item to %s",
+		elog(ERROR, "failed to add index item to \"%s\"",
 			 RelationGetRelationName(r));
 	/* be tidy */
 	if (DatumGetPointer(tmpcentry.key) != NULL &&
@@ -603,7 +603,7 @@ gistwritebuffer(Relation r, Page page, IndexTuple *itup,
 		l = PageAddItem(page, (Item) itup[i], IndexTupleSize(itup[i]),
 						off, LP_USED);
 		if (l == InvalidOffsetNumber)
-			elog(ERROR, "gist: failed to add index item to %s",
+			elog(ERROR, "failed to add index item to \"%s\"",
 				 RelationGetRelationName(r));
 #endif
 	}
@@ -1663,7 +1663,7 @@ initGISTstate(GISTSTATE *giststate, Relation index)
 	int			i;
 
 	if (index->rd_att->natts > INDEX_MAX_KEYS)
-		elog(ERROR, "initGISTstate: numberOfAttributes %d > %d",
+		elog(ERROR, "numberOfAttributes %d > %d",
 			 index->rd_att->natts, INDEX_MAX_KEYS);
 
 	giststate->tupdesc = index->rd_att;

src/backend/access/hash/hash.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hash.c,v 1.63 2003/03/23 23:01:03 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hash.c,v 1.64 2003/07/21 20:29:38 tgl Exp $
  *
  * NOTES
  *	  This file contains only the public interface routines.
@@ -69,7 +69,7 @@ hashbuild(PG_FUNCTION_ARGS)
 	 * that's not the case, big trouble's what we have.
 	 */
 	if (RelationGetNumberOfBlocks(index) != 0)
-		elog(ERROR, "%s already contains data",
+		elog(ERROR, "index \"%s\" already contains data",
 			 RelationGetRelationName(index));
 
 	/* initialize the hash index metadata page */

src/backend/access/hash/hashinsert.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashinsert.c,v 1.25 2002/06/20 20:29:24 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashinsert.c,v 1.26 2003/07/21 20:29:38 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -48,7 +48,7 @@ _hash_doinsert(Relation rel, HashItem hitem)
 	/* we need a scan key to do our search, so build one */
 	itup = &(hitem->hash_itup);
 	if ((natts = rel->rd_rel->relnatts) != 1)
-		elog(ERROR, "Hash indices valid for only one index key.");
+		elog(ERROR, "Hash indexes support only one index key");
 	itup_scankey = _hash_mkscankey(rel, itup);
 
 	/*
@@ -228,7 +228,7 @@ _hash_pgaddtup(Relation rel,
 	itup_off = OffsetNumberNext(PageGetMaxOffsetNumber(page));
 	if (PageAddItem(page, (Item) hitem, itemsize, itup_off, LP_USED)
 		== InvalidOffsetNumber)
-		elog(ERROR, "_hash_pgaddtup: failed to add index item to %s",
+		elog(ERROR, "failed to add index item to \"%s\"",
 			 RelationGetRelationName(rel));
 
 	/* write the buffer, but hold our lock */

src/backend/access/hash/hashovfl.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashovfl.c,v 1.34 2003/03/10 22:28:18 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashovfl.c,v 1.35 2003/07/21 20:29:38 tgl Exp $
  *
  * NOTES
  *	  Overflow pages look like ordinary relation pages.
@@ -58,7 +58,7 @@ _hash_addovflpage(Relation rel, Buffer *metabufp, Buffer buf)
 	/* allocate an empty overflow page */
 	oaddr = _hash_getovfladdr(rel, metabufp);
 	if (oaddr == InvalidOvflAddress)
-		elog(ERROR, "_hash_addovflpage: problem with _hash_getovfladdr.");
+		elog(ERROR, "_hash_getovfladdr failed");
 	ovflblkno = OADDR_TO_BLKNO(OADDR_OF(SPLITNUM(oaddr), OPAGENUM(oaddr)));
 	Assert(BlockNumberIsValid(ovflblkno));
 	ovflbuf = _hash_getbuf(rel, ovflblkno, HASH_WRITE);
@@ -158,12 +158,13 @@ _hash_getovfladdr(Relation rel, Buffer *metabufp)
 	offset = metap->hashm_spares[splitnum] -
 		(splitnum ? metap->hashm_spares[splitnum - 1] : 0);
 
-#define OVMSG	"HASH: Out of overflow pages.  Out of luck.\n"
-
 	if (offset > SPLITMASK)
 	{
 		if (++splitnum >= NCACHED)
-			elog(ERROR, OVMSG);
+			ereport(ERROR,
+					(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+					 errmsg("out of overflow pages in hash index \"%s\"",
+							RelationGetRelationName(rel))));
 		metap->hashm_ovflpoint = splitnum;
 		metap->hashm_spares[splitnum] = metap->hashm_spares[splitnum - 1];
 		metap->hashm_spares[splitnum - 1]--;
@@ -179,7 +180,10 @@ _hash_getovfladdr(Relation rel, Buffer *metabufp)
 
 		free_page++;
 		if (free_page >= NCACHED)
-			elog(ERROR, OVMSG);
+			ereport(ERROR,
+					(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+					 errmsg("out of overflow pages in hash index \"%s\"",
+							RelationGetRelationName(rel))));
 
 		/*
 		 * This is tricky.	The 1 indicates that you want the new page
@@ -193,13 +197,16 @@ _hash_getovfladdr(Relation rel, Buffer *metabufp)
 		 */
 		if (_hash_initbitmap(rel, metap, OADDR_OF(splitnum, offset),
 							 1, free_page))
-			elog(ERROR, "overflow_page: problem with _hash_initbitmap.");
+			elog(ERROR, "_hash_initbitmap failed");
 		metap->hashm_spares[splitnum]++;
 		offset++;
 		if (offset > SPLITMASK)
 		{
 			if (++splitnum >= NCACHED)
-				elog(ERROR, OVMSG);
+				ereport(ERROR,
+						(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+						 errmsg("out of overflow pages in hash index \"%s\"",
+								RelationGetRelationName(rel))));
 			metap->hashm_ovflpoint = splitnum;
 			metap->hashm_spares[splitnum] = metap->hashm_spares[splitnum - 1];
 			metap->hashm_spares[splitnum - 1]--;
@@ -242,7 +249,10 @@ found:
 		;
 	offset = (i ? bit - metap->hashm_spares[i - 1] : bit);
 	if (offset >= SPLITMASK)
-		elog(ERROR, OVMSG);
+		ereport(ERROR,
+				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+				 errmsg("out of overflow pages in hash index \"%s\"",
+						RelationGetRelationName(rel))));
 
 	/* initialize this page */
 	oaddr = OADDR_OF(i, offset);
@@ -479,8 +489,6 @@ _hash_squeezebucket(Relation rel,
 	HashItem	hitem;
 	Size		itemsz;
 
-/*	  elog(DEBUG, "_hash_squeezebucket: squeezing bucket %d", bucket); */
-
 	/*
 	 * start squeezing into the base bucket page.
 	 */
@@ -565,7 +573,7 @@ _hash_squeezebucket(Relation rel,
 		woffnum = OffsetNumberNext(PageGetMaxOffsetNumber(wpage));
 		if (PageAddItem(wpage, (Item) hitem, itemsz, woffnum, LP_USED)
 			== InvalidOffsetNumber)
-			elog(ERROR, "_hash_squeezebucket: failed to add index item to %s",
+			elog(ERROR, "failed to add index item to \"%s\"",
 				 RelationGetRelationName(rel));
 
 		/*

src/backend/access/hash/hashpage.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashpage.c,v 1.36 2002/06/20 20:29:24 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashpage.c,v 1.37 2003/07/21 20:29:38 tgl Exp $
  *
  * NOTES
  *	  Postgres hash pages look like ordinary relation pages.  The opaque
@@ -90,7 +90,7 @@ _hash_metapinit(Relation rel)
 		LockRelation(rel, AccessExclusiveLock);
 
 	if (RelationGetNumberOfBlocks(rel) != 0)
-		elog(ERROR, "Cannot initialize non-empty hash table %s",
+		elog(ERROR, "cannot initialize non-empty hash index \"%s\"",
 			 RelationGetRelationName(rel));
 
 	metabuf = _hash_getbuf(rel, HASH_METAPAGE, HASH_WRITE);
@@ -148,7 +148,7 @@ _hash_metapinit(Relation rel)
 	 * created the first two buckets above.
 	 */
 	if (_hash_initbitmap(rel, metap, OADDR_OF(lg2nelem, 1), lg2nelem + 1, 0))
-		elog(ERROR, "Problem with _hash_initbitmap.");
+		elog(ERROR, "_hash_initbitmap failed");
 
 	/* all done */
 	_hash_wrtnorelbuf(metabuf);
@@ -193,7 +193,7 @@ _hash_getbuf(Relation rel, BlockNumber blkno, int access)
 	Buffer		buf;
 
 	if (blkno == P_NEW)
-		elog(ERROR, "_hash_getbuf: internal error: hash AM does not use P_NEW");
+		elog(ERROR, "hash AM does not use P_NEW");
 	switch (access)
 	{
 		case HASH_WRITE:
@@ -201,8 +201,7 @@ _hash_getbuf(Relation rel, BlockNumber blkno, int access)
 			_hash_setpagelock(rel, blkno, access);
 			break;
 		default:
-			elog(ERROR, "_hash_getbuf: invalid access (%d) on new blk: %s",
-				 access, RelationGetRelationName(rel));
+			elog(ERROR, "unrecognized hash access code: %d", access);
 			break;
 	}
 	buf = ReadBuffer(rel, blkno);
@@ -228,8 +227,8 @@ _hash_relbuf(Relation rel, Buffer buf, int access)
 			_hash_unsetpagelock(rel, blkno, access);
 			break;
 		default:
-			elog(ERROR, "_hash_relbuf: invalid access (%d) on blk %x: %s",
-				 access, blkno, RelationGetRelationName(rel));
+			elog(ERROR, "unrecognized hash access code: %d", access);
+			break;
 	}
 
 	ReleaseBuffer(buf);
@@ -287,8 +286,7 @@ _hash_chgbufaccess(Relation rel,
 			_hash_relbuf(rel, *bufp, from_access);
 			break;
 		default:
-			elog(ERROR, "_hash_chgbufaccess: invalid access (%d) on blk %x: %s",
-				 from_access, blkno, RelationGetRelationName(rel));
+			elog(ERROR, "unrecognized hash access code: %d", from_access);
 			break;
 	}
 	*bufp = _hash_getbuf(rel, blkno, to_access);
@@ -322,8 +320,7 @@ _hash_setpagelock(Relation rel,
 				LockPage(rel, blkno, ShareLock);
 				break;
 			default:
-				elog(ERROR, "_hash_setpagelock: invalid access (%d) on blk %x: %s",
-					 access, blkno, RelationGetRelationName(rel));
+				elog(ERROR, "unrecognized hash access code: %d", access);
 				break;
 		}
 	}
@@ -346,8 +343,7 @@ _hash_unsetpagelock(Relation rel,
 				UnlockPage(rel, blkno, ShareLock);
 				break;
 			default:
-				elog(ERROR, "_hash_unsetpagelock: invalid access (%d) on blk %x: %s",
-					 access, blkno, RelationGetRelationName(rel));
+				elog(ERROR, "unrecognized hash access code: %d", access);
 				break;
 		}
 	}
@@ -409,8 +405,6 @@ _hash_expandtable(Relation rel, Buffer metabuf)
 	Bucket		new_bucket;
 	uint32		spare_ndx;
 
-/*	  elog(DEBUG, "_hash_expandtable: expanding..."); */
-
 	metap = (HashMetaPage) BufferGetPage(metabuf);
 	_hash_checkpage((Page) metap, LH_META_PAGE);
 
@@ -483,9 +477,6 @@ _hash_splitpage(Relation rel,
 	Page		npage;
 	TupleDesc	itupdesc;
 
-/*	  elog(DEBUG, "_hash_splitpage: splitting %d into %d,%d",
-		 obucket, obucket, nbucket);
-*/
 	metap = (HashMetaPage) BufferGetPage(metabuf);
 	_hash_checkpage((Page) metap, LH_META_PAGE);
 
@@ -534,7 +525,7 @@ _hash_splitpage(Relation rel,
 		opage = BufferGetPage(obuf);
 		_hash_checkpage(opage, LH_OVERFLOW_PAGE);
 		if (PageIsEmpty(opage))
-			elog(ERROR, "_hash_splitpage: empty overflow page %d", oblkno);
+			elog(ERROR, "empty hash overflow page %u", oblkno);
 		oopaque = (HashPageOpaque) PageGetSpecialPointer(opage);
 	}
 
@@ -569,13 +560,9 @@ _hash_splitpage(Relation rel,
 				opage = BufferGetPage(obuf);
 				_hash_checkpage(opage, LH_OVERFLOW_PAGE);
 				oopaque = (HashPageOpaque) PageGetSpecialPointer(opage);
-
 				/* we're guaranteed that an ovfl page has at least 1 tuple */
 				if (PageIsEmpty(opage))
-				{
-					elog(ERROR, "_hash_splitpage: empty ovfl page %d!",
-						 oblkno);
-				}
+					elog(ERROR, "empty hash overflow page %u", oblkno);
 				ooffnum = FirstOffsetNumber;
 				omaxoffnum = PageGetMaxOffsetNumber(opage);
 			}
@@ -626,7 +613,7 @@ _hash_splitpage(Relation rel,
 			noffnum = OffsetNumberNext(PageGetMaxOffsetNumber(npage));
 			if (PageAddItem(npage, (Item) hitem, itemsz, noffnum, LP_USED)
 				== InvalidOffsetNumber)
-				elog(ERROR, "_hash_splitpage: failed to add index item to %s",
+				elog(ERROR, "failed to add index item to \"%s\"",
 					 RelationGetRelationName(rel));
 			_hash_wrtnorelbuf(nbuf);
 
@@ -670,10 +657,7 @@ _hash_splitpage(Relation rel,
 				oblkno = BufferGetBlockNumber(obuf);
 				oopaque = (HashPageOpaque) PageGetSpecialPointer(opage);
 				if (PageIsEmpty(opage))
-				{
-					elog(ERROR, "_hash_splitpage: empty overflow page %d",
-						 oblkno);
-				}
+					elog(ERROR, "empty hash overflow page %u", oblkno);
 				ooffnum = FirstOffsetNumber;
 				omaxoffnum = PageGetMaxOffsetNumber(opage);
 			}

src/backend/access/hash/hashutil.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashutil.c,v 1.31 2002/07/02 06:18:57 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashutil.c,v 1.32 2003/07/21 20:29:38 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -78,7 +78,9 @@ _hash_formitem(IndexTuple itup)
 
 	/* disallow nulls in hash keys */
 	if (IndexTupleHasNulls(itup))
-		elog(ERROR, "hash indices cannot include null keys");
+		ereport(ERROR,
+				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+				 errmsg("hash indexes cannot include null keys")));
 
 	/* make a copy of the index tuple with room for the sequence number */
 	tuplen = IndexTupleSize(itup);

src/backend/access/heap/hio.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Id: hio.c,v 1.47 2003/02/13 05:35:11 momjian Exp $
+ *	  $Id: hio.c,v 1.48 2003/07/21 20:29:38 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -23,7 +23,7 @@
 /*
  * RelationPutHeapTuple - place tuple at specified page
  *
- * !!! ELOG(ERROR) IS DISALLOWED HERE !!!
+ * !!! EREPORT(ERROR) IS DISALLOWED HERE !!!  Must PANIC on failure!!!
  *
  * Note - caller must hold BUFFER_LOCK_EXCLUSIVE on the buffer.
  */
@@ -44,7 +44,7 @@ RelationPutHeapTuple(Relation relation,
 						 tuple->t_len, InvalidOffsetNumber, LP_USED);
 
 	if (offnum == InvalidOffsetNumber)
-		elog(PANIC, "RelationPutHeapTuple: failed to add tuple");
+		elog(PANIC, "failed to add tuple to page");
 
 	/* Update tuple->t_self to the actual position where it was stored */
 	ItemPointerSet(&(tuple->t_self), BufferGetBlockNumber(buffer), offnum);
@@ -84,7 +84,7 @@ RelationPutHeapTuple(Relation relation,
  *	for indices only. Alternatively, we could define pseudo-table as
  *	we do for transactions with XactLockTable.
  *
- *	ELOG(ERROR) is allowed here, so this routine *must* be called
+ *	ereport(ERROR) is allowed here, so this routine *must* be called
  *	before any (unlogged) changes are made in buffer pool.
  */
 Buffer
@@ -104,8 +104,11 @@ RelationGetBufferForTuple(Relation relation, Size len,
 	 * If we're gonna fail for oversize tuple, do it right away
 	 */
 	if (len > MaxTupleSize)
-		elog(ERROR, "Tuple is too big: size %lu, max size %ld",
-			 (unsigned long) len, MaxTupleSize);
+		ereport(ERROR,
+				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+				 errmsg("tuple is too big: size %lu, maximum size %lu",
+						(unsigned long) len,
+						(unsigned long) MaxTupleSize)));
 
 	if (otherBuffer != InvalidBuffer)
 		otherBlock = BufferGetBlockNumber(otherBuffer);
@@ -268,7 +271,7 @@ RelationGetBufferForTuple(Relation relation, Size len,
 	if (len > PageGetFreeSpace(pageHeader))
 	{
 		/* We should not get here given the test at the top */
-		elog(PANIC, "Tuple is too big: size %lu", (unsigned long) len);
+		elog(PANIC, "tuple is too big: size %lu", (unsigned long) len);
 	}
 
 	/*

src/backend/access/heap/tuptoaster.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/heap/tuptoaster.c,v 1.36 2002/09/04 20:31:09 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/heap/tuptoaster.c,v 1.37 2003/07/21 20:29:39 tgl Exp $
  *
  *
  * INTERFACE ROUTINES
@@ -896,7 +896,7 @@ toast_save_datum(Relation rel, Datum value)
 		memcpy(VARATT_DATA(&chunk_data), data_p, chunk_size);
 		toasttup = heap_formtuple(toasttupDesc, t_values, t_nulls);
 		if (!HeapTupleIsValid(toasttup))
-			elog(ERROR, "Failed to build TOAST tuple");
+			elog(ERROR, "failed to build TOAST tuple");
 
 		simple_heap_insert(toastrel, toasttup);
 
@@ -912,7 +912,7 @@ toast_save_datum(Relation rel, Datum value)
 							  &(toasttup->t_self),
 							  toastrel, toastidx->rd_index->indisunique);
 		if (idxres == NULL)
-			elog(ERROR, "Failed to insert index entry for TOAST tuple");
+			elog(ERROR, "failed to insert index entry for TOAST tuple");
 
 		/*
 		 * Free memory

src/backend/access/index/genam.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/index/genam.c,v 1.38 2003/03/24 21:42:33 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/index/genam.c,v 1.39 2003/07/21 20:29:39 tgl Exp $
  *
  * NOTES
  *	  many of the old access method routines have been turned into
@@ -70,9 +70,6 @@ RelationGetIndexScan(Relation indexRelation,
 {
 	IndexScanDesc scan;
 
-	if (!RelationIsValid(indexRelation))
-		elog(ERROR, "RelationGetIndexScan: relation invalid");
-
 	scan = (IndexScanDesc) palloc(sizeof(IndexScanDescData));
 
 	scan->heapRelation = NULL;	/* may be set later */
@@ -135,9 +132,6 @@ RelationGetIndexScan(Relation indexRelation,
 void
 IndexScanEnd(IndexScanDesc scan)
 {
-	if (!IndexScanIsValid(scan))
-		elog(ERROR, "IndexScanEnd: invalid scan");
-
 	if (scan->keyData != NULL)
 		pfree(scan->keyData);
 

src/backend/access/index/indexam.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/index/indexam.c,v 1.66 2003/03/24 21:42:33 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/index/indexam.c,v 1.67 2003/07/21 20:29:39 tgl Exp $
  *
  * INTERFACE ROUTINES
  *		index_open		- open an index relation by relation OID
@@ -90,7 +90,7 @@
 	procedure = indexRelation->rd_am->y, \
 	(!RegProcedureIsValid(procedure)) ? \
 		elog(ERROR, "index_%s: invalid %s regproc", \
-			CppAsString(x), CppAsString(y)) \
+			 CppAsString(x), CppAsString(y)) \
 	: (void)NULL \
 )
 
@@ -99,7 +99,7 @@
 	procedure = scan->indexRelation->rd_am->y, \
 	(!RegProcedureIsValid(procedure)) ? \
 		elog(ERROR, "index_%s: invalid %s regproc", \
-			CppAsString(x), CppAsString(y)) \
+			 CppAsString(x), CppAsString(y)) \
 	: (void)NULL \
 )
 
@@ -129,8 +129,10 @@ index_open(Oid relationId)
 	r = relation_open(relationId, NoLock);
 
 	if (r->rd_rel->relkind != RELKIND_INDEX)
-		elog(ERROR, "%s is not an index relation",
-			 RelationGetRelationName(r));
+		ereport(ERROR,
+				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
+				 errmsg("\"%s\" is not an index relation",
+						RelationGetRelationName(r))));
 
 	pgstat_initstats(&r->pgstat_info, r);
 
@@ -152,8 +154,10 @@ index_openrv(const RangeVar *relation)
 	r = relation_openrv(relation, NoLock);
 
 	if (r->rd_rel->relkind != RELKIND_INDEX)
-		elog(ERROR, "%s is not an index relation",
-			 RelationGetRelationName(r));
+		ereport(ERROR,
+				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
+				 errmsg("\"%s\" is not an index relation",
+						RelationGetRelationName(r))));
 
 	pgstat_initstats(&r->pgstat_info, r);
 
@@ -175,8 +179,10 @@ index_openr(const char *sysRelationName)
 	r = relation_openr(sysRelationName, NoLock);
 
 	if (r->rd_rel->relkind != RELKIND_INDEX)
-		elog(ERROR, "%s is not an index relation",
-			 RelationGetRelationName(r));
+		ereport(ERROR,
+				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
+				 errmsg("\"%s\" is not an index relation",
+						RelationGetRelationName(r))));
 
 	pgstat_initstats(&r->pgstat_info, r);
 
@@ -753,7 +759,7 @@ index_getprocinfo(Relation irel,
 		 * use index_getprocid.)
 		 */
 		if (!RegProcedureIsValid(procId))
-			elog(ERROR, "Missing support function %d for attribute %d of index %s",
+			elog(ERROR, "missing support function %d for attribute %d of index \"%s\"",
 				 procnum, attnum, RelationGetRelationName(irel));
 
 		fmgr_info_cxt(procId, locinfo, irel->rd_indexcxt);

src/backend/access/index/istrat.c

@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/index/Attic/istrat.c,v 1.58 2002/06/20 20:29:25 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/index/Attic/istrat.c,v 1.59 2003/07/21 20:29:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -235,7 +235,7 @@ StrategyTermEvaluate(StrategyTerm term,
 				break;
 
 			default:
-				elog(ERROR, "StrategyTermEvaluate: impossible case %d",
+				elog(ERROR, "impossible strategy case: %d",
 					 operator->flags ^ entry->sk_flags);
 		}
 		if (!result)
@@ -310,13 +310,14 @@ RelationGetStrategy(Relation relation,
 			break;
 
 		default:
-			elog(FATAL, "RelationGetStrategy: impossible case %d", entry->sk_flags);
+			elog(ERROR, "impossible strategy case: %d",
+				 entry->sk_flags);
 	}
 
 	if (!StrategyNumberIsInBounds(strategy, evaluation->maxStrategy))
 	{
 		if (!StrategyNumberIsValid(strategy))
-			elog(ERROR, "RelationGetStrategy: corrupted evaluation");
+			elog(ERROR, "corrupted strategy evaluation");
 	}
 
 	return strategy;
@@ -435,8 +436,7 @@ RelationInvokeStrategy(Relation relation,
 		}
 	}
 
-	elog(ERROR, "RelationInvokeStrategy: cannot evaluate strategy %d",
-		 strategy);
+	elog(ERROR, "cannot evaluate strategy %d", strategy);
 
 	/* not reached, just to make compiler happy */
 	return FALSE;

src/backend/access/nbtree/nbtinsert.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.100 2003/05/27 17:49:45 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.101 2003/07/21 20:29:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -153,7 +153,7 @@ top:
  *
  * Returns InvalidTransactionId if there is no conflict, else an xact ID
  * we must wait for to see if it commits a conflicting tuple.	If an actual
- * conflict is detected, no return --- just elog().
+ * conflict is detected, no return --- just ereport().
  */
 static TransactionId
 _bt_check_unique(Relation rel, BTItem btitem, Relation heapRel,
@@ -237,8 +237,10 @@ _bt_check_unique(Relation rel, BTItem btitem, Relation heapRel,
 					/*
 					 * Otherwise we have a definite conflict.
 					 */
-					elog(ERROR, "Cannot insert a duplicate key into unique index %s",
-						 RelationGetRelationName(rel));
+					ereport(ERROR,
+							(errcode(ERRCODE_UNIQUE_VIOLATION),
+							 errmsg("duplicate key violates UNIQUE constraint \"%s\"",
+									RelationGetRelationName(rel))));
 				}
 				else if (htup.t_data != NULL)
 				{
@@ -291,7 +293,7 @@ _bt_check_unique(Relation rel, BTItem btitem, Relation heapRel,
 				if (!P_IGNORE(opaque))
 					break;
 				if (P_RIGHTMOST(opaque))
-					elog(ERROR, "_bt_check_unique: fell off the end of %s",
+					elog(ERROR, "fell off the end of \"%s\"",
 						 RelationGetRelationName(rel));
 			}
 			maxoff = PageGetMaxOffsetNumber(page);
@@ -387,8 +389,11 @@ _bt_insertonpg(Relation rel,
 	 * itemsz doesn't include the ItemId.
 	 */
 	if (itemsz > BTMaxItemSize(page))
-		elog(ERROR, "btree: index item size %lu exceeds maximum %lu",
-			 (unsigned long) itemsz, BTMaxItemSize(page));
+		ereport(ERROR,
+				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+				 errmsg("index tuple size %lu exceeds btree maximum, %lu",
+						(unsigned long) itemsz,
+						(unsigned long) BTMaxItemSize(page))));
 
 	/*
 	 * Determine exactly where new item will go.
@@ -445,7 +450,7 @@ _bt_insertonpg(Relation rel,
 				if (!P_IGNORE(lpageop))
 					break;
 				if (P_RIGHTMOST(lpageop))
-					elog(ERROR, "_bt_insertonpg: fell off the end of %s",
+					elog(ERROR, "fell off the end of \"%s\"",
 						 RelationGetRelationName(rel));
 			}
 			_bt_relbuf(rel, buf);
@@ -536,7 +541,7 @@ _bt_insertonpg(Relation rel,
 			}
 		}
 
-		/* Do the actual update.  No elog(ERROR) until changes are logged */
+		/* Do the update.  No ereport(ERROR) until changes are logged */
 		START_CRIT_SECTION();
 
 		_bt_pgaddtup(rel, page, itemsz, btitem, newitemoff, "page");
@@ -705,7 +710,7 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
 		item = (BTItem) PageGetItem(origpage, itemid);
 		if (PageAddItem(rightpage, (Item) item, itemsz, rightoff,
 						LP_USED) == InvalidOffsetNumber)
-			elog(PANIC, "btree: failed to add hikey to the right sibling");
+			elog(PANIC, "failed to add hikey to the right sibling");
 		rightoff = OffsetNumberNext(rightoff);
 	}
 
@@ -730,7 +735,7 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
 	}
 	if (PageAddItem(leftpage, (Item) item, itemsz, leftoff,
 					LP_USED) == InvalidOffsetNumber)
-		elog(PANIC, "btree: failed to add hikey to the left sibling");
+		elog(PANIC, "failed to add hikey to the left sibling");
 	leftoff = OffsetNumberNext(leftoff);
 
 	/*
@@ -815,14 +820,14 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
 		spage = BufferGetPage(sbuf);
 		sopaque = (BTPageOpaque) PageGetSpecialPointer(spage);
 		if (sopaque->btpo_prev != ropaque->btpo_prev)
-			elog(PANIC, "btree: right sibling's left-link doesn't match");
+			elog(PANIC, "right sibling's left-link doesn't match");
 	}
 
 	/*
 	 * Right sibling is locked, new siblings are prepared, but original
 	 * page is not updated yet. Log changes before continuing.
 	 *
-	 * NO ELOG(ERROR) till right sibling is updated.
+	 * NO EREPORT(ERROR) till right sibling is updated.
 	 */
 	START_CRIT_SECTION();
 
@@ -1059,7 +1064,7 @@ _bt_findsplitloc(Relation rel,
 	 * just in case ...
 	 */
 	if (!state.have_split)
-		elog(FATAL, "_bt_findsplitloc: can't find a feasible split point for %s",
+		elog(ERROR, "cannot find a feasible split point for \"%s\"",
 			 RelationGetRelationName(rel));
 
 	*newitemonleft = state.newitemonleft;
@@ -1193,7 +1198,7 @@ _bt_insert_parent(Relation rel,
 			BTPageOpaque lpageop;
 
 			if (!InRecovery)
-				elog(DEBUG2, "_bt_insert_parent: concurrent ROOT page split");
+				elog(DEBUG2, "concurrent ROOT page split");
 			lpageop = (BTPageOpaque) PageGetSpecialPointer(page);
 			/* Find the leftmost page at the next level up */
 			pbuf = _bt_get_endpoint(rel, lpageop->btpo.level + 1, false);
@@ -1232,8 +1237,8 @@ _bt_insert_parent(Relation rel,
 
 		/* Check for error only after writing children */
 		if (pbuf == InvalidBuffer)
-			elog(ERROR, "_bt_getstackbuf: my bits moved right off the end of the world!"
-				 "\n\tRecreate index %s.", RelationGetRelationName(rel));
+			elog(ERROR, "failed to re-find parent key in \"%s\"",
+				 RelationGetRelationName(rel));
 
 		/* Recursively update the parent */
 		newres = _bt_insertonpg(rel, pbuf, stack->bts_parent,
@@ -1399,7 +1404,7 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
 	metapg = BufferGetPage(metabuf);
 	metad = BTPageGetMeta(metapg);
 
-	/* NO ELOG(ERROR) from here till newroot op is logged */
+	/* NO EREPORT(ERROR) from here till newroot op is logged */
 	START_CRIT_SECTION();
 
 	/* set btree special data */
@@ -1431,7 +1436,7 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
 	 * the two items will go into positions P_HIKEY and P_FIRSTKEY.
 	 */
 	if (PageAddItem(rootpage, (Item) new_item, itemsz, P_HIKEY, LP_USED) == InvalidOffsetNumber)
-		elog(PANIC, "btree: failed to add leftkey to new root page");
+		elog(PANIC, "failed to add leftkey to new root page");
 	pfree(new_item);
 
 	/*
@@ -1448,7 +1453,7 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf)
 	 * insert the right page pointer into the new root page.
 	 */
 	if (PageAddItem(rootpage, (Item) new_item, itemsz, P_FIRSTKEY, LP_USED) == InvalidOffsetNumber)
-		elog(PANIC, "btree: failed to add rightkey to new root page");
+		elog(PANIC, "failed to add rightkey to new root page");
 	pfree(new_item);
 
 	/* XLOG stuff */
@@ -1533,7 +1538,7 @@ _bt_pgaddtup(Relation rel,
 
 	if (PageAddItem(page, (Item) btitem, itemsize, itup_off,
 					LP_USED) == InvalidOffsetNumber)
-		elog(PANIC, "btree: failed to add item to the %s for %s",
+		elog(PANIC, "failed to add item to the %s for \"%s\"",
 			 where, RelationGetRelationName(rel));
 }
 

src/backend/access/nbtree/nbtpage.c

@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtpage.c,v 1.65 2003/05/27 17:49:45 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtpage.c,v 1.66 2003/07/21 20:29:39 tgl Exp $
  *
  *	NOTES
  *	   Postgres btree pages look like ordinary relation pages.	The opaque
@@ -44,7 +44,7 @@ _bt_metapinit(Relation rel)
 	BTPageOpaque op;
 
 	if (RelationGetNumberOfBlocks(rel) != 0)
-		elog(ERROR, "Cannot initialize non-empty btree %s",
+		elog(ERROR, "cannot initialize non-empty btree index \"%s\"",
 			 RelationGetRelationName(rel));
 
 	buf = ReadBuffer(rel, P_NEW);
@@ -145,13 +145,17 @@ _bt_getroot(Relation rel, int access)
 	/* sanity-check the metapage */
 	if (!(metaopaque->btpo_flags & BTP_META) ||
 		metad->btm_magic != BTREE_MAGIC)
-		elog(ERROR, "Index %s is not a btree",
-			 RelationGetRelationName(rel));
+		ereport(ERROR,
+				(errcode(ERRCODE_INDEX_CORRUPTED),
+				 errmsg("index \"%s\" is not a btree",
+						RelationGetRelationName(rel))));
 
 	if (metad->btm_version != BTREE_VERSION)
-		elog(ERROR, "Version mismatch on %s: version %d file, version %d code",
-			 RelationGetRelationName(rel),
-			 metad->btm_version, BTREE_VERSION);
+		ereport(ERROR,
+				(errcode(ERRCODE_INDEX_CORRUPTED),
+				 errmsg("version mismatch in \"%s\": file version %d, code version %d",
+						RelationGetRelationName(rel),
+						metad->btm_version, BTREE_VERSION)));
 
 	/* if no root page initialized yet, do it */
 	if (metad->btm_root == P_NONE)
@@ -265,7 +269,7 @@ _bt_getroot(Relation rel, int access)
 
 			/* it's dead, Jim.  step right one page */
 			if (P_RIGHTMOST(rootopaque))
-				elog(ERROR, "No live root page found in %s",
+				elog(ERROR, "no live root page found in \"%s\"",
 					 RelationGetRelationName(rel));
 			rootblkno = rootopaque->btpo_next;
 
@@ -274,7 +278,7 @@ _bt_getroot(Relation rel, int access)
 
 		/* Note: can't check btpo.level on deleted pages */
 		if (rootopaque->btpo.level != rootlevel)
-			elog(ERROR, "Root page %u of %s has level %u, expected %u",
+			elog(ERROR, "root page %u of \"%s\" has level %u, expected %u",
 				 rootblkno, RelationGetRelationName(rel),
 				 rootopaque->btpo.level, rootlevel);
 	}
@@ -320,13 +324,17 @@ _bt_gettrueroot(Relation rel)
 
 	if (!(metaopaque->btpo_flags & BTP_META) ||
 		metad->btm_magic != BTREE_MAGIC)
-		elog(ERROR, "Index %s is not a btree",
-			 RelationGetRelationName(rel));
+		ereport(ERROR,
+				(errcode(ERRCODE_INDEX_CORRUPTED),
+				 errmsg("index \"%s\" is not a btree",
+						RelationGetRelationName(rel))));
 
 	if (metad->btm_version != BTREE_VERSION)
-		elog(ERROR, "Version mismatch on %s: version %d file, version %d code",
-			 RelationGetRelationName(rel),
-			 metad->btm_version, BTREE_VERSION);
+		ereport(ERROR,
+				(errcode(ERRCODE_INDEX_CORRUPTED),
+				 errmsg("version mismatch in \"%s\": file version %d, code version %d",
+						RelationGetRelationName(rel),
+						metad->btm_version, BTREE_VERSION)));
 
 	/* if no root page initialized yet, fail */
 	if (metad->btm_root == P_NONE)
@@ -351,7 +359,7 @@ _bt_gettrueroot(Relation rel)
 
 		/* it's dead, Jim.  step right one page */
 		if (P_RIGHTMOST(rootopaque))
-			elog(ERROR, "No live root page found in %s",
+			elog(ERROR, "no live root page found in \"%s\"",
 				 RelationGetRelationName(rel));
 		rootblkno = rootopaque->btpo_next;
 
@@ -360,7 +368,7 @@ _bt_gettrueroot(Relation rel)
 
 	/* Note: can't check btpo.level on deleted pages */
 	if (rootopaque->btpo.level != rootlevel)
-		elog(ERROR, "Root page %u of %s has level %u, expected %u",
+		elog(ERROR, "root page %u of \"%s\" has level %u, expected %u",
 			 rootblkno, RelationGetRelationName(rel),
 			 rootopaque->btpo.level, rootlevel);
 
@@ -416,7 +424,7 @@ _bt_getbuf(Relation rel, BlockNumber blkno, int access)
 				_bt_pageinit(page, BufferGetPageSize(buf));
 				return buf;
 			}
-			elog(DEBUG2, "_bt_getbuf: FSM returned nonrecyclable page");
+			elog(DEBUG2, "FSM returned nonrecyclable page");
 			_bt_relbuf(rel, buf);
 		}
 
@@ -630,7 +638,7 @@ _bt_delitems(Relation rel, Buffer buf,
 	Page		page = BufferGetPage(buf);
 	int			i;
 
-	/* No elog(ERROR) until changes are logged */
+	/* No ereport(ERROR) until changes are logged */
 	START_CRIT_SECTION();
 
 	/*
@@ -775,7 +783,7 @@ _bt_pagedel(Relation rel, Buffer buf, bool vacuum_full)
 	for (;;)
 	{
 		if (stack == NULL)
-			elog(ERROR, "_bt_pagedel: not enough stack items");
+			elog(ERROR, "not enough stack items");
 		if (ilevel == targetlevel)
 			break;
 		stack = stack->bts_parent;
@@ -805,7 +813,7 @@ _bt_pagedel(Relation rel, Buffer buf, bool vacuum_full)
 			_bt_relbuf(rel, lbuf);
 			if (leftsib == P_NONE)
 			{
-				elog(LOG, "_bt_pagedel: no left sibling (concurrent deletion?)");
+				elog(LOG, "no left sibling (concurrent deletion?)");
 				return 0;
 			}
 			lbuf = _bt_getbuf(rel, leftsib, BT_WRITE);
@@ -837,7 +845,7 @@ _bt_pagedel(Relation rel, Buffer buf, bool vacuum_full)
 		return 0;
 	}
 	if (opaque->btpo_prev != leftsib)
-		elog(ERROR, "_bt_pagedel: left link changed unexpectedly");
+		elog(ERROR, "left link changed unexpectedly");
 	/*
 	 * And next write-lock the (current) right sibling.
 	 */
@@ -851,8 +859,8 @@ _bt_pagedel(Relation rel, Buffer buf, bool vacuum_full)
 				   target, P_HIKEY);
 	pbuf = _bt_getstackbuf(rel, stack, BT_WRITE);
 	if (pbuf == InvalidBuffer)
-		elog(ERROR, "_bt_getstackbuf: my bits moved right off the end of the world!"
-			 "\n\tRecreate index %s.", RelationGetRelationName(rel));
+		elog(ERROR, "failed to re-find parent key in \"%s\"",
+			 RelationGetRelationName(rel));
 	parent = stack->bts_blkno;
 	poffset = stack->bts_offset;
 	/*
@@ -924,7 +932,7 @@ _bt_pagedel(Relation rel, Buffer buf, bool vacuum_full)
 	 * Here we begin doing the deletion.
 	 */
 
-	/* No elog(ERROR) until changes are logged */
+	/* No ereport(ERROR) until changes are logged */
 	START_CRIT_SECTION();
 
 	/*
@@ -954,7 +962,7 @@ _bt_pagedel(Relation rel, Buffer buf, bool vacuum_full)
 		itemid = PageGetItemId(page, nextoffset);
 		btitem = (BTItem) PageGetItem(page, itemid);
 		if (ItemPointerGetBlockNumber(&(btitem->bti_itup.t_tid)) != rightsib)
-			elog(PANIC, "_bt_pagedel: right sibling is not next child");
+			elog(PANIC, "right sibling is not next child");
 
 		PageIndexTupleDelete(page, nextoffset);
 	}

src/backend/access/nbtree/nbtree.c

@@ -12,7 +12,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtree.c,v 1.102 2003/03/23 23:01:03 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtree.c,v 1.103 2003/07/21 20:29:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -108,7 +108,7 @@ btbuild(PG_FUNCTION_ARGS)
 	 * that's not the case, big trouble's what we have.
 	 */
 	if (RelationGetNumberOfBlocks(index) != 0)
-		elog(ERROR, "%s already contains data",
+		elog(ERROR, "index \"%s\" already contains data",
 			 RelationGetRelationName(index));
 
 	/* initialize the btree index metadata page */
@@ -816,8 +816,7 @@ btvacuumcleanup(PG_FUNCTION_ARGS)
 			 */
 			i = FlushRelationBuffers(rel, new_pages);
 			if (i < 0)
-				elog(ERROR, "btvacuumcleanup: FlushRelationBuffers returned %d",
-					 i);
+				elog(ERROR, "FlushRelationBuffers returned %d", i);
 
 			/*
 			 * Do the physical truncation.
@@ -929,8 +928,8 @@ _bt_restscan(IndexScanDesc scan)
 		 * we can find it again.
 		 */
 		if (P_RIGHTMOST(opaque))
-			elog(ERROR, "_bt_restscan: my bits moved right off the end of the world!"
-				 "\n\tRecreate index %s.", RelationGetRelationName(rel));
+			elog(ERROR, "failed to re-find previous key in \"%s\"",
+				 RelationGetRelationName(rel));
 		/* Advance to next non-dead page --- there must be one */
 		nextbuf = InvalidBuffer;
 		for (;;)
@@ -944,7 +943,7 @@ _bt_restscan(IndexScanDesc scan)
 			if (!P_IGNORE(opaque))
 				break;
 			if (P_RIGHTMOST(opaque))
-				elog(ERROR, "_bt_restscan: fell off the end of %s",
+				elog(ERROR, "fell off the end of \"%s\"",
 					 RelationGetRelationName(rel));
 		}
 		_bt_relbuf(rel, buf);

src/backend/access/nbtree/nbtsearch.c

@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtsearch.c,v 1.74 2003/02/22 00:45:04 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtsearch.c,v 1.75 2003/07/21 20:29:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -168,7 +168,7 @@ _bt_moveright(Relation rel,
 	}
 
 	if (P_IGNORE(opaque))
-		elog(ERROR, "_bt_moveright: fell off the end of %s",
+		elog(ERROR, "fell off the end of \"%s\"",
 			 RelationGetRelationName(rel));
 
 	return buf;
@@ -552,7 +552,7 @@ _bt_first(IndexScanDesc scan, ScanDirection dir)
 		{
 			pfree(nKeyIs);
 			pfree(scankeys);
-			elog(ERROR, "_bt_first: btree doesn't support is(not)null, yet");
+			elog(ERROR, "btree doesn't support is(not)null, yet");
 			return false;
 		}
 		procinfo = index_getprocinfo(rel, i + 1, BTORDER_PROC);
@@ -700,7 +700,7 @@ _bt_first(IndexScanDesc scan, ScanDirection dir)
 					result = _bt_compare(rel, keysCount, scankeys, page, offnum);
 				} while (result == 0);
 				if (!_bt_step(scan, &buf, BackwardScanDirection))
-					elog(ERROR, "_bt_first: equal items disappeared?");
+					elog(ERROR, "equal items disappeared?");
 			}
 			break;
 
@@ -991,7 +991,7 @@ _bt_walk_left(Relation rel, Buffer buf)
 			for (;;)
 			{
 				if (P_RIGHTMOST(opaque))
-					elog(ERROR, "_bt_walk_left: fell off the end of %s",
+					elog(ERROR, "fell off the end of \"%s\"",
 						 RelationGetRelationName(rel));
 				blkno = opaque->btpo_next;
 				_bt_relbuf(rel, buf);
@@ -1015,7 +1015,7 @@ _bt_walk_left(Relation rel, Buffer buf)
 			 * if there's anything wrong.
 			 */
 			if (opaque->btpo_prev == lblkno)
-				elog(ERROR, "_bt_walk_left: can't find left sibling in %s",
+				elog(ERROR, "cannot find left sibling in \"%s\"",
 					 RelationGetRelationName(rel));
 			/* Okay to try again with new lblkno value */
 		}
@@ -1028,7 +1028,7 @@ _bt_walk_left(Relation rel, Buffer buf)
  * _bt_get_endpoint() -- Find the first or last page on a given tree level
  *
  * If the index is empty, we will return InvalidBuffer; any other failure
- * condition causes elog().  We will not return a dead page.
+ * condition causes ereport().  We will not return a dead page.
  *
  * The returned buffer is pinned and read-locked.
  */
@@ -1075,7 +1075,7 @@ _bt_get_endpoint(Relation rel, uint32 level, bool rightmost)
 		{
 			blkno = opaque->btpo_next;
 			if (blkno == P_NONE)
-				elog(ERROR, "_bt_get_endpoint: fell off the end of %s",
+				elog(ERROR, "fell off the end of \"%s\"",
 					 RelationGetRelationName(rel));
 			_bt_relbuf(rel, buf);
 			buf = _bt_getbuf(rel, blkno, BT_READ);
@@ -1087,7 +1087,7 @@ _bt_get_endpoint(Relation rel, uint32 level, bool rightmost)
 		if (opaque->btpo.level == level)
 			break;
 		if (opaque->btpo.level < level)
-			elog(ERROR, "_bt_get_endpoint: btree level %u not found", level);
+			elog(ERROR, "btree level %u not found", level);
 
 		/* Descend to leftmost or rightmost child page */
 		if (rightmost)
@@ -1176,7 +1176,7 @@ _bt_endpoint(IndexScanDesc scan, ScanDirection dir)
 	}
 	else
 	{
-		elog(ERROR, "Illegal scan direction %d", dir);
+		elog(ERROR, "invalid scan direction: %d", (int) dir);
 		start = 0;				/* keep compiler quiet */
 	}
 

src/backend/access/nbtree/nbtsort.c

@@ -36,7 +36,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtsort.c,v 1.72 2003/02/22 00:45:04 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtsort.c,v 1.73 2003/07/21 20:29:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -332,7 +332,7 @@ _bt_sortaddtup(Page page,
 
 	if (PageAddItem(page, (Item) btitem, itemsize, itup_off,
 					LP_USED) == InvalidOffsetNumber)
-		elog(ERROR, "btree: failed to add item to the page in _bt_sort");
+		elog(ERROR, "failed to add item to the index page");
 }
 
 /*----------
@@ -397,8 +397,11 @@ _bt_buildadd(Relation index, BTPageState *state, BTItem bti)
 	 * during creation of an index, we don't go through there.
 	 */
 	if (btisz > BTMaxItemSize(npage))
-		elog(ERROR, "btree: index item size %lu exceeds maximum %ld",
-			 (unsigned long) btisz, BTMaxItemSize(npage));
+		ereport(ERROR,
+				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+				 errmsg("index tuple size %lu exceeds btree maximum, %lu",
+						(unsigned long) btisz,
+						(unsigned long) BTMaxItemSize(npage))));
 
 	if (pgspc < btisz || pgspc < state->btps_full)
 	{

src/backend/access/nbtree/nbtutils.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtutils.c,v 1.51 2002/09/04 20:31:12 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtutils.c,v 1.52 2003/07/21 20:29:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -227,7 +227,7 @@ _bt_orderkeys(IndexScanDesc scan)
 	cur = &key[0];
 	/* check input keys are correctly ordered */
 	if (cur->sk_attno != 1)
-		elog(ERROR, "_bt_orderkeys: key(s) for attribute 1 missed");
+		elog(ERROR, "key(s) for attribute 1 missed");
 
 	/* We can short-circuit most of the work if there's just one key */
 	if (numberOfKeys == 1)
@@ -305,8 +305,7 @@ _bt_orderkeys(IndexScanDesc scan)
 
 			/* check input keys are correctly ordered */
 			if (i < numberOfKeys && cur->sk_attno != attno + 1)
-				elog(ERROR, "_bt_orderkeys: key(s) for attribute %d missed",
-					 attno + 1);
+				elog(ERROR, "key(s) for attribute %d missed", attno + 1);
 
 			/*
 			 * If = has been specified, no other key will be used. In case
@@ -462,8 +461,7 @@ _bt_getstrategynumber(RegProcedure sk_procedure, StrategyMap map)
 		if (sk_procedure == map->entry[j].sk_procedure)
 			return j;
 	}
-	elog(ERROR, "_bt_getstrategynumber: unable to identify operator %u",
-		 sk_procedure);
+	elog(ERROR, "unable to identify operator %u", sk_procedure);
 	return -1;					/* keep compiler quiet */
 }
 

src/backend/access/rtree/rtree.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/rtree/Attic/rtree.c,v 1.77 2003/02/24 00:57:17 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/rtree/Attic/rtree.c,v 1.78 2003/07/21 20:29:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -125,7 +125,7 @@ rtbuild(PG_FUNCTION_ARGS)
 	 * that's not the case, big trouble's what we have.
 	 */
 	if (RelationGetNumberOfBlocks(index) != 0)
-		elog(ERROR, "%s already contains data",
+		elog(ERROR, "index \"%s\" already contains data",
 			 RelationGetRelationName(index));
 
 	/* initialize the root page */
@@ -328,7 +328,7 @@ rtdoinsert(Relation r, IndexTuple itup, RTSTATE *rtstate)
 						LP_USED);
 	}
 	if (l == InvalidOffsetNumber)
-		elog(ERROR, "rtdoinsert: failed to add index item to %s",
+		elog(ERROR, "failed to add index item to \"%s\"",
 			 RelationGetRelationName(r));
 
 	WriteBuffer(buffer);
@@ -520,7 +520,7 @@ rtdosplit(Relation r,
 
 		if (PageAddItem(left, (Item) item, IndexTupleSize(item),
 						leftoff, LP_USED) == InvalidOffsetNumber)
-			elog(ERROR, "rtdosplit: failed to add index item to %s",
+			elog(ERROR, "failed to add index item to \"%s\"",
 				 RelationGetRelationName(r));
 		leftoff = OffsetNumberNext(leftoff);
 
@@ -544,7 +544,7 @@ rtdosplit(Relation r,
 
 		if (PageAddItem(right, (Item) item, IndexTupleSize(item),
 						rightoff, LP_USED) == InvalidOffsetNumber)
-			elog(ERROR, "rtdosplit: failed to add index item to %s",
+			elog(ERROR, "failed to add index item to \"%s\"",
 				 RelationGetRelationName(r));
 		rightoff = OffsetNumberNext(rightoff);
 
@@ -640,7 +640,9 @@ rtintinsert(Relation r,
 	 */
 
 	if (IndexTupleSize(old) != IndexTupleSize(ltup))
-		elog(ERROR, "Variable-length rtree keys are not supported.");
+		ereport(ERROR,
+				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+				 errmsg("variable-length rtree keys are not supported")));
 
 	/* install pointer to left child */
 	memmove(old, ltup, IndexTupleSize(ltup));
@@ -660,7 +662,7 @@ rtintinsert(Relation r,
 		if (PageAddItem(p, (Item) rtup, IndexTupleSize(rtup),
 						PageGetMaxOffsetNumber(p),
 						LP_USED) == InvalidOffsetNumber)
-			elog(ERROR, "rtintinsert: failed to add index item to %s",
+			elog(ERROR, "failed to add index item to \"%s\"",
 				 RelationGetRelationName(r));
 		WriteBuffer(b);
 		ldatum = IndexTupleGetDatum(ltup);
@@ -686,12 +688,12 @@ rtnewroot(Relation r, IndexTuple lt, IndexTuple rt)
 	if (PageAddItem(p, (Item) lt, IndexTupleSize(lt),
 					FirstOffsetNumber,
 					LP_USED) == InvalidOffsetNumber)
-		elog(ERROR, "rtnewroot: failed to add index item to %s",
+		elog(ERROR, "failed to add index item to \"%s\"",
 			 RelationGetRelationName(r));
 	if (PageAddItem(p, (Item) rt, IndexTupleSize(rt),
 					OffsetNumberNext(FirstOffsetNumber),
 					LP_USED) == InvalidOffsetNumber)
-		elog(ERROR, "rtnewroot: failed to add index item to %s",
+		elog(ERROR, "failed to add index item to \"%s\"",
 			 RelationGetRelationName(r));
 	WriteBuffer(b);
 }
@@ -778,8 +780,11 @@ rtpicksplit(Relation r,
 	 */
 	newitemsz = IndexTupleTotalSize(itup);
 	if (newitemsz > RTPageAvailSpace)
-		elog(ERROR, "rtree: index item size %lu exceeds maximum %lu",
-			 (unsigned long) newitemsz, (unsigned long) RTPageAvailSpace);
+		ereport(ERROR,
+				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+				 errmsg("index tuple size %lu exceeds rtree maximum, %lu",
+						(unsigned long) newitemsz,
+						(unsigned long) RTPageAvailSpace)));
 
 	maxoff = PageGetMaxOffsetNumber(page);
 	newitemoff = OffsetNumberNext(maxoff);		/* phony index for new
@@ -1065,7 +1070,7 @@ rtpicksplit(Relation r,
 			choose_left = false;
 		else
 		{
-			elog(ERROR, "rtpicksplit: failed to find a workable page split");
+			elog(ERROR, "failed to find a workable rtree page split");
 			choose_left = false;	/* keep compiler quiet */
 		}
 

src/backend/access/rtree/rtscan.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/rtree/Attic/rtscan.c,v 1.43 2003/03/23 23:01:03 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/rtree/Attic/rtscan.c,v 1.44 2003/07/21 20:29:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -384,7 +384,7 @@ adjustiptr(IndexScanDesc s,
 					break;
 
 				default:
-					elog(ERROR, "Bad operation in rtree scan adjust: %d", op);
+					elog(ERROR, "unrecognized operation in rtree scan adjust: %d", op);
 			}
 		}
 	}

src/backend/access/transam/xact.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.148 2003/05/14 03:26:00 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.149 2003/07/21 20:29:39 tgl Exp $
  *
  * NOTES
  *		Transaction aborts can now occur two ways:
@@ -400,7 +400,9 @@ CommandCounterIncrement(void)
 
 	s->commandId += 1;
 	if (s->commandId == FirstCommandId) /* check for overflow */
-		elog(ERROR, "You may only have 2^32-1 commands per transaction");
+		ereport(ERROR,
+				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+				 errmsg("cannot have more than 2^32-1 commands in a transaction")));
 
 	/* Propagate new command ID into query snapshots, if set */
 	if (QuerySnapshot)
@@ -672,8 +674,7 @@ RecordTransactionAbort(void)
 		 * RecordTransactionCommit ...
 		 */
 		if (TransactionIdDidCommit(xid))
-			elog(PANIC, "RecordTransactionAbort: xact %u already committed",
-				 xid);
+			elog(PANIC, "cannot abort transaction %u, it was already committed", xid);
 
 		START_CRIT_SECTION();
 
@@ -1367,23 +1368,24 @@ PreventTransactionChain(void *stmtNode, const char *stmtType)
 	 * xact block already started?
 	 */
 	if (IsTransactionBlock())
-	{
-		/* translator: %s represents an SQL statement name */
-		elog(ERROR, "%s cannot run inside a transaction block", stmtType);
-	}
+		ereport(ERROR,
+				(errcode(ERRCODE_ACTIVE_SQL_TRANSACTION),
+				 /* translator: %s represents an SQL statement name */
+				 errmsg("%s cannot run inside a transaction block",
+						stmtType)));
 	/*
 	 * Are we inside a function call?  If the statement's parameter block
 	 * was allocated in QueryContext, assume it is an interactive command.
 	 * Otherwise assume it is coming from a function.
 	 */
 	if (!MemoryContextContains(QueryContext, stmtNode))
-	{
-		/* translator: %s represents an SQL statement name */
-		elog(ERROR, "%s cannot be executed from a function", stmtType);
-	}
+		ereport(ERROR,
+				(errcode(ERRCODE_ACTIVE_SQL_TRANSACTION),
+				 /* translator: %s represents an SQL statement name */
+				 errmsg("%s cannot be executed from a function", stmtType)));
 	/* If we got past IsTransactionBlock test, should be in default state */
 	if (CurrentTransactionState->blockState != TBLOCK_DEFAULT)
-		elog(ERROR, "PreventTransactionChain: can't prevent chain");
+		elog(ERROR, "cannot prevent transaction chain");
 	/* all okay */
 }
 
@@ -1419,9 +1421,11 @@ RequireTransactionChain(void *stmtNode, const char *stmtType)
 	 */
 	if (!MemoryContextContains(QueryContext, stmtNode))
 		return;
-	/* translator: %s represents an SQL statement name */
-	elog(ERROR, "%s may only be used in begin/end transaction blocks",
-		 stmtType);
+	ereport(ERROR,
+			(errcode(ERRCODE_NO_ACTIVE_SQL_TRANSACTION),
+			 /* translator: %s represents an SQL statement name */
+			 errmsg("%s may only be used in BEGIN/END transaction blocks",
+					stmtType)));
 }
 
 
@@ -1441,7 +1445,9 @@ BeginTransactionBlock(void)
 	 * check the current transaction state
 	 */
 	if (s->blockState != TBLOCK_DEFAULT)
-		elog(WARNING, "BEGIN: already a transaction in progress");
+		ereport(WARNING,
+				(errcode(ERRCODE_ACTIVE_SQL_TRANSACTION),
+				 errmsg("there is already a transaction in progress")));
 
 	/*
 	 * set the current transaction block state information appropriately
@@ -1501,7 +1507,9 @@ EndTransactionBlock(void)
 	 * CommitTransactionCommand() will then put us back into the default
 	 * state.
 	 */
-	elog(WARNING, "COMMIT: no transaction in progress");
+	ereport(WARNING,
+			(errcode(ERRCODE_NO_ACTIVE_SQL_TRANSACTION),
+			 errmsg("there is no transaction in progress")));
 	AbortTransaction();
 	s->blockState = TBLOCK_ENDABORT;
 }
@@ -1537,7 +1545,9 @@ AbortTransactionBlock(void)
 	 * CommitTransactionCommand() will then put us back into the default
 	 * state.
 	 */
-	elog(WARNING, "ROLLBACK: no transaction in progress");
+	ereport(WARNING,
+			(errcode(ERRCODE_NO_ACTIVE_SQL_TRANSACTION),
+			 errmsg("there is no transaction in progress")));
 	AbortTransaction();
 	s->blockState = TBLOCK_ENDABORT;
 }
@@ -1583,7 +1593,9 @@ UserAbortTransactionBlock(void)
 	 * CommitTransactionCommand() will then put us back into the default
 	 * state.
 	 */
-	elog(WARNING, "ROLLBACK: no transaction in progress");
+	ereport(WARNING,
+			(errcode(ERRCODE_NO_ACTIVE_SQL_TRANSACTION),
+			 errmsg("there is no transaction in progress")));
 	AbortTransaction();
 	s->blockState = TBLOCK_ENDABORT;
 }
@@ -1663,7 +1675,8 @@ TransactionBlockStatusCode(void)
 	}
 
 	/* should never get here */
-	elog(ERROR, "bogus transaction block state");
+	elog(ERROR, "invalid transaction block state: %d",
+		 (int) s->blockState);
 	return 0;					/* keep compiler quiet */
 }
 

src/include/utils/elog.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: elog.h,v 1.52 2003/07/21 17:05:11 tgl Exp $
+ * $Id: elog.h,v 1.53 2003/07/21 20:29:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -177,6 +177,7 @@
 #define ERRCODE_NO_ACTIVE_SQL_TRANSACTION_FOR_BRANCH_TRANSACTION	MAKE_SQLSTATE('2','5', '0','0','5')
 #define ERRCODE_READ_ONLY_SQL_TRANSACTION	MAKE_SQLSTATE('2','5', '0','0','6')
 #define ERRCODE_SCHEMA_AND_DATA_STATEMENT_MIXING_NOT_SUPPORTED	MAKE_SQLSTATE('2','5', '0','0','7')
+#define ERRCODE_NO_ACTIVE_SQL_TRANSACTION	MAKE_SQLSTATE('2','5', 'P','0','1')
 
 /* Class 26 - Invalid SQL Statement Name */
 /* (we take this to mean prepared statements) */
@@ -308,6 +309,7 @@
 #define ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE	MAKE_SQLSTATE('5','5', '0','0','0')
 #define ERRCODE_OBJECT_IN_USE				MAKE_SQLSTATE('5','5', '0','0','6')
 #define ERRCODE_INDEXES_DEACTIVATED			MAKE_SQLSTATE('5','5', 'P','0','1')
+#define ERRCODE_INDEX_CORRUPTED				MAKE_SQLSTATE('5','5', 'P','0','2')
 
 /* Class 57 - Operator Intervention (class borrowed from DB2) */
 #define ERRCODE_OPERATOR_INTERVENTION		MAKE_SQLSTATE('5','7', '0','0','0')

src/test/regress/expected/alter_table.out

@@ -475,7 +475,7 @@ NOTICE:  ALTER TABLE / ADD UNIQUE will create implicit index "atacc_test1" for t
 insert into atacc1 (test) values (2);
 -- should fail
 insert into atacc1 (test) values (2);
-ERROR:  Cannot insert a duplicate key into unique index atacc_test1
+ERROR:  duplicate key violates UNIQUE constraint "atacc_test1"
 -- should succeed
 insert into atacc1 (test) values (4);
 -- try adding a unique oid constraint
@@ -509,7 +509,7 @@ NOTICE:  ALTER TABLE / ADD UNIQUE will create implicit index "atacc_test1" for t
 insert into atacc1 (test,test2) values (4,4);
 -- should fail
 insert into atacc1 (test,test2) values (4,4);
-ERROR:  Cannot insert a duplicate key into unique index atacc_test1
+ERROR:  duplicate key violates UNIQUE constraint "atacc_test1"
 -- should all succeed
 insert into atacc1 (test,test2) values (4,5);
 insert into atacc1 (test,test2) values (5,4);
@@ -523,7 +523,7 @@ NOTICE:  ALTER TABLE / ADD UNIQUE will create implicit index "atacc1_test2_key"
 -- should fail for @@ second one @@
 insert into atacc1 (test2, test) values (3, 3);
 insert into atacc1 (test2, test) values (2, 3);
-ERROR:  Cannot insert a duplicate key into unique index atacc1_test_key
+ERROR:  duplicate key violates UNIQUE constraint "atacc1_test_key"
 drop table atacc1;
 -- test primary key constraint adding
 create table atacc1 ( test int );
@@ -534,7 +534,7 @@ NOTICE:  ALTER TABLE / ADD PRIMARY KEY will create implicit index "atacc_test1"
 insert into atacc1 (test) values (2);
 -- should fail
 insert into atacc1 (test) values (2);
-ERROR:  Cannot insert a duplicate key into unique index atacc_test1
+ERROR:  duplicate key violates UNIQUE constraint "atacc_test1"
 -- should succeed
 insert into atacc1 (test) values (4);
 -- inserting NULL should fail
@@ -589,7 +589,7 @@ ERROR:  multiple primary keys for table "atacc1" are not allowed
 insert into atacc1 (test,test2) values (4,4);
 -- should fail
 insert into atacc1 (test,test2) values (4,4);
-ERROR:  Cannot insert a duplicate key into unique index atacc_test1
+ERROR:  duplicate key violates UNIQUE constraint "atacc_test1"
 insert into atacc1 (test,test2) values (NULL,3);
 ERROR:  null value for attribute "test" violates NOT NULL constraint
 insert into atacc1 (test,test2) values (3, NULL);
@@ -607,7 +607,7 @@ NOTICE:  CREATE TABLE / PRIMARY KEY will create implicit index "atacc1_pkey" for
 -- only first should succeed
 insert into atacc1 (test2, test) values (3, 3);
 insert into atacc1 (test2, test) values (2, 3);
-ERROR:  Cannot insert a duplicate key into unique index atacc1_pkey
+ERROR:  duplicate key violates UNIQUE constraint "atacc1_pkey"
 insert into atacc1 (test2, test) values (1, NULL);
 ERROR:  null value for attribute "test" violates NOT NULL constraint
 drop table atacc1;

src/test/regress/expected/arrays.out

@@ -363,7 +363,7 @@ insert into arr_tbl values ('{1,2,3}');
 insert into arr_tbl values ('{1,2}');
 -- failure expected:
 insert into arr_tbl values ('{1,2,3}');
-ERROR:  Cannot insert a duplicate key into unique index arr_tbl_f1_key
+ERROR:  duplicate key violates UNIQUE constraint "arr_tbl_f1_key"
 insert into arr_tbl values ('{2,3,4}');
 insert into arr_tbl values ('{1,5,3}');
 insert into arr_tbl values ('{1,2,10}');

src/test/regress/expected/create_index.out

@@ -78,7 +78,7 @@ INSERT INTO func_index_heap VALUES('AB','CDEFG');
 INSERT INTO func_index_heap VALUES('QWE','RTY');
 -- this should fail because of unique index:
 INSERT INTO func_index_heap VALUES('ABCD', 'EF');
-ERROR:  Cannot insert a duplicate key into unique index func_index_index
+ERROR:  duplicate key violates UNIQUE constraint "func_index_index"
 -- but this shouldn't:
 INSERT INTO func_index_heap VALUES('QWERTY');
 --
@@ -92,7 +92,7 @@ INSERT INTO func_index_heap VALUES('AB','CDEFG');
 INSERT INTO func_index_heap VALUES('QWE','RTY');
 -- this should fail because of unique index:
 INSERT INTO func_index_heap VALUES('ABCD', 'EF');
-ERROR:  Cannot insert a duplicate key into unique index func_index_index
+ERROR:  duplicate key violates UNIQUE constraint "func_index_index"
 -- but this shouldn't:
 INSERT INTO func_index_heap VALUES('QWERTY');
 --

src/test/regress/expected/errors.out

@@ -99,10 +99,10 @@ ERROR:  attribute "oid" of relation "stud_emp" already exists
  
 -- not in a xact 
 abort;
-WARNING:  ROLLBACK: no transaction in progress
+WARNING:  there is no transaction in progress
 -- not in a xact 
 end;
-WARNING:  COMMIT: no transaction in progress
+WARNING:  there is no transaction in progress
 --
 -- CREATE AGGREGATE
 -- sfunc/finalfunc type disagreement 

src/test/regress/expected/plpgsql.out

@@ -1515,7 +1515,7 @@ select * from PField_v1 where pfname = 'PF0_2' order by slotname;
 -- Finally we want errors
 --
 insert into PField values ('PF1_1', 'should fail due to unique index');
-ERROR:  Cannot insert a duplicate key into unique index pfield_name
+ERROR:  duplicate key violates UNIQUE constraint "pfield_name"
 update PSlot set backlink = 'WS.not.there' where slotname = 'PS.base.a1';
 ERROR:  WS.not.there         does not exist
 CONTEXT:  PL/pgSQL function tg_backlink_a line 16 at assignment
@@ -1529,7 +1529,7 @@ update PSlot set slotlink = 'XX.illegal' where slotname = 'PS.base.a1';
 ERROR:  illegal slotlink beginning with XX
 CONTEXT:  PL/pgSQL function tg_slotlink_a line 16 at assignment
 insert into HSlot values ('HS', 'base.hub1', 1, '');
-ERROR:  Cannot insert a duplicate key into unique index hslot_name
+ERROR:  duplicate key violates UNIQUE constraint "hslot_name"
 insert into HSlot values ('HS', 'base.hub1', 20, '');
 ERROR:  no manual manipulation of HSlot
 delete from HSlot;

src/test/regress/output/constraints.source

@@ -290,7 +290,7 @@ NOTICE:  CREATE TABLE / PRIMARY KEY will create implicit index "primary_tbl_pkey
 INSERT INTO PRIMARY_TBL VALUES (1, 'one');
 INSERT INTO PRIMARY_TBL VALUES (2, 'two');
 INSERT INTO PRIMARY_TBL VALUES (1, 'three');
-ERROR:  Cannot insert a duplicate key into unique index primary_tbl_pkey
+ERROR:  duplicate key violates UNIQUE constraint "primary_tbl_pkey"
 INSERT INTO PRIMARY_TBL VALUES (4, 'three');
 INSERT INTO PRIMARY_TBL VALUES (5, 'one');
 INSERT INTO PRIMARY_TBL (t) VALUES ('six');
@@ -334,7 +334,7 @@ NOTICE:  CREATE TABLE / UNIQUE will create implicit index "unique_tbl_i_key" for
 INSERT INTO UNIQUE_TBL VALUES (1, 'one');
 INSERT INTO UNIQUE_TBL VALUES (2, 'two');
 INSERT INTO UNIQUE_TBL VALUES (1, 'three');
-ERROR:  Cannot insert a duplicate key into unique index unique_tbl_i_key
+ERROR:  duplicate key violates UNIQUE constraint "unique_tbl_i_key"
 INSERT INTO UNIQUE_TBL VALUES (4, 'four');
 INSERT INTO UNIQUE_TBL VALUES (5, 'one');
 INSERT INTO UNIQUE_TBL (t) VALUES ('six');
@@ -358,7 +358,7 @@ INSERT INTO UNIQUE_TBL VALUES (1, 'one');
 INSERT INTO UNIQUE_TBL VALUES (2, 'two');
 INSERT INTO UNIQUE_TBL VALUES (1, 'three');
 INSERT INTO UNIQUE_TBL VALUES (1, 'one');
-ERROR:  Cannot insert a duplicate key into unique index unique_tbl_i_key
+ERROR:  duplicate key violates UNIQUE constraint "unique_tbl_i_key"
 INSERT INTO UNIQUE_TBL VALUES (5, 'one');
 INSERT INTO UNIQUE_TBL (t) VALUES ('six');
 SELECT '' AS five, * FROM UNIQUE_TBL;