gcc 4.6 warnings -Wunused-but-set-variable

diff --git i/contrib/isn/isn.c w/contrib/isn/isn.c
index 46e904b..b698cb0 100644
--- i/contrib/isn/isn.c
+++ w/contrib/isn/isn.c
@@ -341,8 +341,7 @@ ean2isn(ean13 ean, bool errorOK, ean13 *result, enum isn_type accept)
 	enum isn_type type = INVALID;
 
 	char		buf[MAXEAN13LEN + 1];
-	char	   *firstdig,
-			   *aux;
+	char	   *aux;
 	unsigned	digval;
 	unsigned	search;
 	ean13		ret = ean;
@@ -354,7 +353,7 @@ ean2isn(ean13 ean, bool errorOK, ean13 *result, enum isn_type accept)
 
 	/* convert the number */
 	search = 0;
-	firstdig = aux = buf + 13;
+	aux = buf + 13;
 	*aux = '\0';				/* terminate string; aux points to last digit */
 	do
 	{
@@ -528,8 +527,7 @@ ean2string(ean13 ean, bool errorOK, char *result, bool shortType)
 	const unsigned (*TABLE_index)[2];
 	enum isn_type type = INVALID;
 
-	char	   *firstdig,
-			   *aux;
+	char	   *aux;
 	unsigned	digval;
 	unsigned	search;
 	char		valid = '\0';	/* was the number initially written with a
@@ -546,7 +544,7 @@ ean2string(ean13 ean, bool errorOK, char *result, bool shortType)
 
 	/* convert the number */
 	search = 0;
-	firstdig = aux = result + MAXEAN13LEN;
+	aux = result + MAXEAN13LEN;
 	*aux = '\0';				/* terminate string; aux points to last digit */
 	*--aux = valid;				/* append '!' for numbers with invalid but
 								 * corrected check digit */
diff --git i/contrib/pageinspect/fsmfuncs.c w/contrib/pageinspect/fsmfuncs.c
index eca3230..38c4e23 100644
--- i/contrib/pageinspect/fsmfuncs.c
+++ w/contrib/pageinspect/fsmfuncs.c
@@ -35,7 +35,6 @@ Datum
 fsm_page_contents(PG_FUNCTION_ARGS)
 {
 	bytea	   *raw_page = PG_GETARG_BYTEA_P(0);
-	int			raw_page_size;
 	StringInfoData sinfo;
 	FSMPage		fsmpage;
 	int			i;
@@ -45,7 +44,6 @@ fsm_page_contents(PG_FUNCTION_ARGS)
 				(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
 				 (errmsg("must be superuser to use raw page functions"))));
 
-	raw_page_size = VARSIZE(raw_page) - VARHDRSZ;
 	fsmpage = (FSMPage) PageGetContents(VARDATA(raw_page));
 
 	initStringInfo(&sinfo);
diff --git i/contrib/pgcrypto/pgp-s2k.c w/contrib/pgcrypto/pgp-s2k.c
index ef16caf..349234e 100644
--- i/contrib/pgcrypto/pgp-s2k.c
+++ w/contrib/pgcrypto/pgp-s2k.c
@@ -39,14 +39,12 @@ static int
 calc_s2k_simple(PGP_S2K *s2k, PX_MD *md, const uint8 *key,
 				unsigned key_len)
 {
-	unsigned	md_bs,
-				md_rlen;
+	unsigned	md_rlen;
 	uint8		buf[PGP_MAX_DIGEST];
 	unsigned	preload;
 	unsigned	remain;
 	uint8	   *dst = s2k->key;
 
-	md_bs = px_md_block_size(md);
 	md_rlen = px_md_result_size(md);
 
 	remain = s2k->key_len;
@@ -83,14 +81,12 @@ calc_s2k_simple(PGP_S2K *s2k, PX_MD *md, const uint8 *key,
 static int
 calc_s2k_salted(PGP_S2K *s2k, PX_MD *md, const uint8 *key, unsigned key_len)
 {
-	unsigned	md_bs,
-				md_rlen;
+	unsigned	md_rlen;
 	uint8		buf[PGP_MAX_DIGEST];
 	unsigned	preload = 0;
 	uint8	   *dst;
 	unsigned	remain;
 
-	md_bs = px_md_block_size(md);
 	md_rlen = px_md_result_size(md);
 
 	dst = s2k->key;
@@ -129,8 +125,7 @@ static int
 calc_s2k_iter_salted(PGP_S2K *s2k, PX_MD *md, const uint8 *key,
 					 unsigned key_len)
 {
-	unsigned	md_bs,
-				md_rlen;
+	unsigned	md_rlen;
 	uint8		buf[PGP_MAX_DIGEST];
 	uint8	   *dst;
 	unsigned	preload = 0;
@@ -143,7 +138,6 @@ calc_s2k_iter_salted(PGP_S2K *s2k, PX_MD *md, const uint8 *key,
 	cval = s2k->iter;
 	count = ((unsigned) 16 + (cval & 15)) << ((cval >> 4) + 6);
 
-	md_bs = px_md_block_size(md);
 	md_rlen = px_md_result_size(md);
 
 	remain = s2k->key_len;
diff --git i/contrib/pgcrypto/px-hmac.c w/contrib/pgcrypto/px-hmac.c
index 16abc43..36efabd 100644
--- i/contrib/pgcrypto/px-hmac.c
+++ w/contrib/pgcrypto/px-hmac.c
@@ -52,13 +52,11 @@ static void
 hmac_init(PX_HMAC *h, const uint8 *key, unsigned klen)
 {
 	unsigned	bs,
-				hlen,
 				i;
 	uint8	   *keybuf;
 	PX_MD	   *md = h->md;
 
 	bs = px_md_block_size(md);
-	hlen = px_md_result_size(md);
 	keybuf = px_alloc(bs);
 	memset(keybuf, 0, bs);
 
diff --git i/contrib/pgcrypto/px.c w/contrib/pgcrypto/px.c
index 768c7c3..e3f5e26 100644
--- i/contrib/pgcrypto/px.c
+++ w/contrib/pgcrypto/px.c
@@ -162,14 +162,12 @@ combo_init(PX_Combo *cx, const uint8 *key, unsigned klen,
 		   const uint8 *iv, unsigned ivlen)
 {
 	int			err;
-	unsigned	bs,
-				ks,
+	unsigned	ks,
 				ivs;
 	PX_Cipher  *c = cx->cipher;
 	uint8	   *ivbuf = NULL;
 	uint8	   *keybuf;
 
-	bs = px_cipher_block_size(c);
 	ks = px_cipher_key_size(c);
 
 	ivs = px_cipher_iv_size(c);
@@ -205,7 +203,6 @@ combo_encrypt(PX_Combo *cx, const uint8 *data, unsigned dlen,
 	int			err = 0;
 	uint8	   *bbuf;
 	unsigned	bs,
-				maxlen,
 				bpos,
 				i,
 				pad;
@@ -213,7 +210,6 @@ combo_encrypt(PX_Combo *cx, const uint8 *data, unsigned dlen,
 	PX_Cipher  *c = cx->cipher;
 
 	bbuf = NULL;
-	maxlen = *rlen;
 	bs = px_cipher_block_size(c);
 
 	/* encrypt */
diff --git i/contrib/seg/seg.c w/contrib/seg/seg.c
index afada2a..5cadb9c 100644
--- i/contrib/seg/seg.c
+++ w/contrib/seg/seg.c
@@ -867,7 +867,6 @@ restore(char *result, float val, int n)
 		'0', '0', '0', '0', '\0'
 	};
 	char	   *p;
-	char	   *mant;
 	int			exp;
 	int			i,
 				dp,
@@ -893,7 +892,7 @@ restore(char *result, float val, int n)
 	*p = '\0';
 
 	/* get the exponent */
-	mant = (char *) strtok(strdup(result), "e");
+	strtok(strdup(result), "e");
 	exp = atoi(strtok(NULL, "e"));
 
 	if (exp == 0)
diff --git i/src/backend/access/gist/gistvacuum.c w/src/backend/access/gist/gistvacuum.c
index 4369d01..33e6f34 100644
--- i/src/backend/access/gist/gistvacuum.c
+++ w/src/backend/access/gist/gistvacuum.c
@@ -38,8 +38,6 @@ gistvacuumcleanup(PG_FUNCTION_ARGS)
 	BlockNumber npages,
 				blkno;
 	BlockNumber totFreePages;
-	BlockNumber lastBlock = GIST_ROOT_BLKNO,
-				lastFilledBlock = GIST_ROOT_BLKNO;
 	bool		needLock;
 
 	/* No-op in ANALYZE ONLY mode */
@@ -90,11 +88,8 @@ gistvacuumcleanup(PG_FUNCTION_ARGS)
 			totFreePages++;
 			RecordFreeIndexPage(rel, blkno);
 		}
-		else
-			lastFilledBlock = blkno;
 		UnlockReleaseBuffer(buffer);
 	}
-	lastBlock = npages - 1;
 
 	/* Finally, vacuum the FSM */
 	IndexFreeSpaceMapVacuum(info->index);
diff --git i/src/backend/access/nbtree/nbtpage.c w/src/backend/access/nbtree/nbtpage.c
index 2796445..8003b5a 100644
--- i/src/backend/access/nbtree/nbtpage.c
+++ w/src/backend/access/nbtree/nbtpage.c
@@ -466,7 +466,6 @@ _bt_log_reuse_page(Relation rel, BlockNumber blkno, TransactionId latestRemovedX
 
 	/* XLOG stuff */
 	{
-		XLogRecPtr	recptr;
 		XLogRecData rdata[1];
 		xl_btree_reuse_page xlrec_reuse;
 
@@ -478,7 +477,7 @@ _bt_log_reuse_page(Relation rel, BlockNumber blkno, TransactionId latestRemovedX
 		rdata[0].buffer = InvalidBuffer;
 		rdata[0].next = NULL;
 
-		recptr = XLogInsert(RM_BTREE_ID, XLOG_BTREE_REUSE_PAGE, rdata);
+		XLogInsert(RM_BTREE_ID, XLOG_BTREE_REUSE_PAGE, rdata);
 
 		/*
 		 * We don't do PageSetLSN or PageSetTLI here because we're about
diff --git i/src/backend/catalog/pg_proc.c w/src/backend/catalog/pg_proc.c
index 6138165..55276d5 100644
--- i/src/backend/catalog/pg_proc.c
+++ w/src/backend/catalog/pg_proc.c
@@ -671,7 +671,6 @@ fmgr_internal_validator(PG_FUNCTION_ARGS)
 {
 	Oid			funcoid = PG_GETARG_OID(0);
 	HeapTuple	tuple;
-	Form_pg_proc proc;
 	bool		isnull;
 	Datum		tmp;
 	char	   *prosrc;
@@ -684,7 +683,6 @@ fmgr_internal_validator(PG_FUNCTION_ARGS)
 	tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcoid));
 	if (!HeapTupleIsValid(tuple))
 		elog(ERROR, "cache lookup failed for function %u", funcoid);
-	proc = (Form_pg_proc) GETSTRUCT(tuple);
 
 	tmp = SysCacheGetAttr(PROCOID, tuple, Anum_pg_proc_prosrc, &isnull);
 	if (isnull)
@@ -717,7 +715,6 @@ fmgr_c_validator(PG_FUNCTION_ARGS)
 	Oid			funcoid = PG_GETARG_OID(0);
 	void	   *libraryhandle;
 	HeapTuple	tuple;
-	Form_pg_proc proc;
 	bool		isnull;
 	Datum		tmp;
 	char	   *prosrc;
@@ -732,7 +729,6 @@ fmgr_c_validator(PG_FUNCTION_ARGS)
 	tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcoid));
 	if (!HeapTupleIsValid(tuple))
 		elog(ERROR, "cache lookup failed for function %u", funcoid);
-	proc = (Form_pg_proc) GETSTRUCT(tuple);
 
 	tmp = SysCacheGetAttr(PROCOID, tuple, Anum_pg_proc_prosrc, &isnull);
 	if (isnull)
diff --git i/src/backend/catalog/toasting.c w/src/backend/catalog/toasting.c
index 5d5496d..42986d3 100644
--- i/src/backend/catalog/toasting.c
+++ w/src/backend/catalog/toasting.c
@@ -118,7 +118,6 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid, Datum reloptio
 	Relation	toast_rel;
 	Relation	class_rel;
 	Oid			toast_relid;
-	Oid			toast_idxid;
 	Oid			toast_typid = InvalidOid;
 	Oid			namespaceid;
 	char		toast_relname[NAMEDATALEN];
@@ -274,7 +273,7 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid, Datum reloptio
 	coloptions[0] = 0;
 	coloptions[1] = 0;
 
-	toast_idxid = index_create(toast_rel, toast_idxname, toastIndexOid,
+	index_create(toast_rel, toast_idxname, toastIndexOid,
 							   indexInfo,
 							   list_make2("chunk_id", "chunk_seq"),
 							   BTREE_AM_OID,
diff --git i/src/backend/commands/explain.c w/src/backend/commands/explain.c
index 1d9586f..bb15b25 100644
--- i/src/backend/commands/explain.c
+++ w/src/backend/commands/explain.c
@@ -1269,7 +1269,6 @@ show_plan_tlist(PlanState *planstate, List *ancestors, ExplainState *es)
 	List	   *result = NIL;
 	bool		useprefix;
 	ListCell   *lc;
-	int			i;
 
 	/* No work if empty tlist (this occurs eg in bitmap indexscans) */
 	if (plan->targetlist == NIL)
@@ -1290,7 +1289,6 @@ show_plan_tlist(PlanState *planstate, List *ancestors, ExplainState *es)
 	useprefix = list_length(es->rtable) > 1;
 
 	/* Deparse each result column (we now include resjunk ones) */
-	i = 0;
 	foreach(lc, plan->targetlist)
 	{
 		TargetEntry *tle = (TargetEntry *) lfirst(lc);
diff --git i/src/backend/commands/tablecmds.c w/src/backend/commands/tablecmds.c
index 737ab1a..82d09c0 100644
--- i/src/backend/commands/tablecmds.c
+++ w/src/backend/commands/tablecmds.c
@@ -8129,14 +8129,12 @@ MergeAttributesIntoExisting(Relation child_rel, Relation parent_rel)
 	AttrNumber	parent_attno;
 	int			parent_natts;
 	TupleDesc	tupleDesc;
-	TupleConstr *constr;
 	HeapTuple	tuple;
 
 	attrrel = heap_open(AttributeRelationId, RowExclusiveLock);
 
 	tupleDesc = RelationGetDescr(parent_rel);
 	parent_natts = tupleDesc->natts;
-	constr = tupleDesc->constr;
 
 	for (parent_attno = 1; parent_attno <= parent_natts; parent_attno++)
 	{
diff --git i/src/backend/commands/tsearchcmds.c w/src/backend/commands/tsearchcmds.c
index 81f129d..d16f1fd 100644
--- i/src/backend/commands/tsearchcmds.c
+++ w/src/backend/commands/tsearchcmds.c
@@ -2152,14 +2152,12 @@ DropConfigurationMapping(AlterTSConfigurationStmt *stmt,
 	HeapTuple	maptup;
 	int			i;
 	Oid			prsId;
-	int		   *tokens,
-				ntoken;
+	int		   *tokens;
 	ListCell   *c;
 
 	prsId = ((Form_pg_ts_config) GETSTRUCT(tup))->cfgparser;
 
 	tokens = getTokenTypes(prsId, stmt->tokentype);
-	ntoken = list_length(stmt->tokentype);
 
 	i = 0;
 	foreach(c, stmt->tokentype)
diff --git i/src/backend/commands/vacuum.c w/src/backend/commands/vacuum.c
index 1651aa9..3ec28c8 100644
--- i/src/backend/commands/vacuum.c
+++ w/src/backend/commands/vacuum.c
@@ -92,8 +92,7 @@ vacuum(VacuumStmt *vacstmt, Oid relid, bool do_toast,
 	   BufferAccessStrategy bstrategy, bool for_wraparound, bool isTopLevel)
 {
 	const char *stmttype;
-	volatile bool all_rels,
-				in_outer_xact,
+	volatile bool in_outer_xact,
 				use_own_xacts;
 	List	   *relations;
 
@@ -153,9 +152,6 @@ vacuum(VacuumStmt *vacstmt, Oid relid, bool do_toast,
 	}
 	vac_strategy = bstrategy;
 
-	/* Remember whether we are processing everything in the DB */
-	all_rels = (!OidIsValid(relid) && vacstmt->relation == NULL);
-
 	/*
 	 * Build list of relations to process, unless caller gave us one. (If we
 	 * build one, we put it in vac_context for safekeeping.)
diff --git i/src/backend/commands/variable.c w/src/backend/commands/variable.c
index 2a61ea3..1d04e33 100644
--- i/src/backend/commands/variable.c
+++ w/src/backend/commands/variable.c
@@ -855,7 +855,6 @@ show_session_authorization(void)
 	 * assign_session_authorization
 	 */
 	const char *value = session_authorization_string;
-	Oid			savedoid;
 	char	   *endptr;
 
 	/* If session_authorization hasn't been set in this process, return "" */
@@ -865,7 +864,7 @@ show_session_authorization(void)
 	Assert(strspn(value, "x") == NAMEDATALEN &&
 		   (value[NAMEDATALEN] == 'T' || value[NAMEDATALEN] == 'F'));
 
-	savedoid = (Oid) strtoul(value + NAMEDATALEN + 1, &endptr, 10);
+	strtoul(value + NAMEDATALEN + 1, &endptr, 10);
 
 	Assert(endptr != value + NAMEDATALEN + 1 && *endptr == ',');
 
diff --git i/src/backend/executor/nodeHashjoin.c w/src/backend/executor/nodeHashjoin.c
index a6847c9..114ff00 100644
--- i/src/backend/executor/nodeHashjoin.c
+++ w/src/backend/executor/nodeHashjoin.c
@@ -59,7 +59,6 @@ static bool ExecHashJoinNewBatch(HashJoinState *hjstate);
 TupleTableSlot *				/* return: a tuple or NULL */
 ExecHashJoin(HashJoinState *node)
 {
-	EState	   *estate;
 	PlanState  *outerNode;
 	HashState  *hashNode;
 	List	   *joinqual;
@@ -74,7 +73,6 @@ ExecHashJoin(HashJoinState *node)
 	/*
 	 * get information from HashJoin node
 	 */
-	estate = node->js.ps.state;
 	joinqual = node->js.joinqual;
 	otherqual = node->js.ps.qual;
 	hashNode = (HashState *) innerPlanState(node);
diff --git i/src/backend/executor/nodeMergejoin.c w/src/backend/executor/nodeMergejoin.c
index 75c3a64..bc1aa30 100644
--- i/src/backend/executor/nodeMergejoin.c
+++ w/src/backend/executor/nodeMergejoin.c
@@ -639,7 +639,6 @@ ExecMergeTupleDump(MergeJoinState *mergestate)
 TupleTableSlot *
 ExecMergeJoin(MergeJoinState *node)
 {
-	EState	   *estate;
 	List	   *joinqual;
 	List	   *otherqual;
 	bool		qualResult;
@@ -655,7 +654,6 @@ ExecMergeJoin(MergeJoinState *node)
 	/*
 	 * get information from node
 	 */
-	estate = node->js.ps.state;
 	innerPlan = innerPlanState(node);
 	outerPlan = outerPlanState(node);
 	econtext = node->js.ps.ps_ExprContext;
diff --git i/src/backend/executor/nodeRecursiveunion.c w/src/backend/executor/nodeRecursiveunion.c
index 84c0518..be0d8ba 100644
--- i/src/backend/executor/nodeRecursiveunion.c
+++ w/src/backend/executor/nodeRecursiveunion.c
@@ -79,7 +79,6 @@ ExecRecursiveUnion(RecursiveUnionState *node)
 	PlanState  *innerPlan = innerPlanState(node);
 	RecursiveUnion *plan = (RecursiveUnion *) node->ps.plan;
 	TupleTableSlot *slot;
-	RUHashEntry entry;
 	bool		isnew;
 
 	/* 1. Evaluate non-recursive term */
@@ -93,8 +92,7 @@ ExecRecursiveUnion(RecursiveUnionState *node)
 			if (plan->numCols > 0)
 			{
 				/* Find or build hashtable entry for this tuple's group */
-				entry = (RUHashEntry)
-					LookupTupleHashEntry(node->hashtable, slot, &isnew);
+				LookupTupleHashEntry(node->hashtable, slot, &isnew);
 				/* Must reset temp context after each hashtable lookup */
 				MemoryContextReset(node->tempContext);
 				/* Ignore tuple if already seen */
@@ -141,8 +139,7 @@ ExecRecursiveUnion(RecursiveUnionState *node)
 		if (plan->numCols > 0)
 		{
 			/* Find or build hashtable entry for this tuple's group */
-			entry = (RUHashEntry)
-				LookupTupleHashEntry(node->hashtable, slot, &isnew);
+			LookupTupleHashEntry(node->hashtable, slot, &isnew);
 			/* Must reset temp context after each hashtable lookup */
 			MemoryContextReset(node->tempContext);
 			/* Ignore tuple if already seen */
diff --git i/src/backend/foreign/foreign.c w/src/backend/foreign/foreign.c
index 44cd181..dfede78 100644
--- i/src/backend/foreign/foreign.c
+++ w/src/backend/foreign/foreign.c
@@ -214,7 +214,6 @@ GetForeignServerByName(const char *srvname, bool missing_ok)
 UserMapping *
 GetUserMapping(Oid userid, Oid serverid)
 {
-	Form_pg_user_mapping umform;
 	Datum		datum;
 	HeapTuple	tp;
 	bool		isnull;
@@ -238,8 +237,6 @@ GetUserMapping(Oid userid, Oid serverid)
 				 errmsg("user mapping not found for \"%s\"",
 						MappingUserName(userid))));
 
-	umform = (Form_pg_user_mapping) GETSTRUCT(tp);
-
 	um = (UserMapping *) palloc(sizeof(UserMapping));
 	um->userid = userid;
 	um->serverid = serverid;
diff --git i/src/backend/libpq/auth.c w/src/backend/libpq/auth.c
index 151ec56..70cc5a5 100644
--- i/src/backend/libpq/auth.c
+++ w/src/backend/libpq/auth.c
@@ -956,15 +956,14 @@ static void
 pg_GSS_error(int severity, char *errmsg, OM_uint32 maj_stat, OM_uint32 min_stat)
 {
 	gss_buffer_desc gmsg;
-	OM_uint32	lmaj_s,
-				lmin_s,
+	OM_uint32	lmin_s,
 				msg_ctx;
 	char		msg_major[128],
 				msg_minor[128];
 
 	/* Fetch major status message */
 	msg_ctx = 0;
-	lmaj_s = gss_display_status(&lmin_s, maj_stat, GSS_C_GSS_CODE,
+	gss_display_status(&lmin_s, maj_stat, GSS_C_GSS_CODE,
 								GSS_C_NO_OID, &msg_ctx, &gmsg);
 	strlcpy(msg_major, gmsg.value, sizeof(msg_major));
 	gss_release_buffer(&lmin_s, &gmsg);
@@ -980,7 +979,7 @@ pg_GSS_error(int severity, char *errmsg, OM_uint32 maj_stat, OM_uint32 min_stat)
 
 	/* Fetch mechanism minor status message */
 	msg_ctx = 0;
-	lmaj_s = gss_display_status(&lmin_s, min_stat, GSS_C_MECH_CODE,
+	gss_display_status(&lmin_s, min_stat, GSS_C_MECH_CODE,
 								GSS_C_NO_OID, &msg_ctx, &gmsg);
 	strlcpy(msg_minor, gmsg.value, sizeof(msg_minor));
 	gss_release_buffer(&lmin_s, &gmsg);
diff --git i/src/backend/optimizer/geqo/geqo_main.c w/src/backend/optimizer/geqo/geqo_main.c
index b3b02d6..e2a8bbc 100644
--- i/src/backend/optimizer/geqo/geqo_main.c
+++ w/src/backend/optimizer/geqo/geqo_main.c
@@ -73,15 +73,16 @@ geqo(PlannerInfo *root, int number_of_rels, List *initial_rels)
 	Chromosome *kid;
 	Pool	   *pool;
 	int			pool_size,
-				number_generations,
-				status_interval;
+				number_generations;
+#ifdef GEQO_DEBUG
+	int			status_interval;
+#endif
 	Gene	   *best_tour;
 	RelOptInfo *best_rel;
 
 #if defined(ERX)
 	Edge	   *edge_table;		/* list of edges */
 	int			edge_failures = 0;
-	float		difference;
 #endif
 #if defined(CX) || defined(PX) || defined(OX1) || defined(OX2)
 	City	   *city_table;		/* list of cities */
@@ -101,7 +102,9 @@ geqo(PlannerInfo *root, int number_of_rels, List *initial_rels)
 /* set GA parameters */
 	pool_size = gimme_pool_size(number_of_rels);
 	number_generations = gimme_number_generations(pool_size);
+#ifdef GEQO_DEBUG
 	status_interval = 10;
+#endif
 
 /* allocate genetic pool memory */
 	pool = alloc_pool(root, pool_size, number_of_rels);
@@ -178,7 +181,7 @@ geqo(PlannerInfo *root, int number_of_rels, List *initial_rels)
 
 #if defined (ERX)
 		/* EDGE RECOMBINATION CROSSOVER */
-		difference = gimme_edge_table(root, momma->string, daddy->string, pool->string_length, edge_table);
+		gimme_edge_table(root, momma->string, daddy->string, pool->string_length, edge_table);
 
 		kid = momma;
 
diff --git i/src/backend/parser/parse_utilcmd.c w/src/backend/parser/parse_utilcmd.c
index fe8d0c4..1eda78f 100644
--- i/src/backend/parser/parse_utilcmd.c
+++ w/src/backend/parser/parse_utilcmd.c
@@ -2516,9 +2516,8 @@ transformColumnType(CreateStmtContext *cxt, ColumnDef *column)
 	if (column->collClause)
 	{
 		Form_pg_type typtup = (Form_pg_type) GETSTRUCT(ctype);
-		Oid		collOid;
 
-		collOid = LookupCollation(cxt->pstate,
+		LookupCollation(cxt->pstate,
 								  column->collClause->collname,
 								  column->collClause->location);
 		/* Complain if COLLATE is applied to an uncollatable type */
diff --git i/src/backend/rewrite/rewriteDefine.c w/src/backend/rewrite/rewriteDefine.c
index a405dbf..5bdbbd8 100644
--- i/src/backend/rewrite/rewriteDefine.c
+++ w/src/backend/rewrite/rewriteDefine.c
@@ -232,7 +232,6 @@ DefineQueryRewrite(char *rulename,
 				   List *action)
 {
 	Relation	event_relation;
-	Oid			ruleId;
 	int			event_attno;
 	ListCell   *l;
 	Query	   *query;
@@ -488,7 +487,7 @@ DefineQueryRewrite(char *rulename,
 	/* discard rule if it's null action and not INSTEAD; it's a no-op */
 	if (action != NIL || is_instead)
 	{
-		ruleId = InsertRule(rulename,
+		InsertRule(rulename,
 							event_type,
 							event_relid,
 							event_attno,
diff --git i/src/backend/storage/ipc/standby.c w/src/backend/storage/ipc/standby.c
index 2e71484..277ae16 100644
--- i/src/backend/storage/ipc/standby.c
+++ w/src/backend/storage/ipc/standby.c
@@ -334,7 +334,6 @@ static void
 ResolveRecoveryConflictWithLock(Oid dbOid, Oid relOid)
 {
 	VirtualTransactionId *backends;
-	bool		report_memory_error = false;
 	bool		lock_acquired = false;
 	int			num_attempts = 0;
 	LOCKTAG		locktag;
@@ -354,11 +353,8 @@ ResolveRecoveryConflictWithLock(Oid dbOid, Oid relOid)
 		if (++num_attempts < 3)
 			backends = GetLockConflicts(&locktag, AccessExclusiveLock);
 		else
-		{
 			backends = GetConflictingVirtualXIDs(InvalidTransactionId,
 												 InvalidOid);
-			report_memory_error = true;
-		}
 
 		ResolveRecoveryConflictWithVirtualXIDs(backends,
 											 PROCSIG_RECOVERY_CONFLICT_LOCK);
diff --git i/src/backend/storage/smgr/md.c w/src/backend/storage/smgr/md.c
index 9d585b6..9afce7c 100644
--- i/src/backend/storage/smgr/md.c
+++ w/src/backend/storage/smgr/md.c
@@ -901,13 +901,12 @@ void
 mdimmedsync(SMgrRelation reln, ForkNumber forknum)
 {
 	MdfdVec    *v;
-	BlockNumber curnblk;
 
 	/*
 	 * NOTE: mdnblocks makes sure we have opened all active segments, so that
 	 * fsync loop will get them all!
 	 */
-	curnblk = mdnblocks(reln, forknum);
+	mdnblocks(reln, forknum);
 
 	v = mdopen(reln, forknum, EXTENSION_FAIL);
 
diff --git i/src/backend/utils/adt/ri_triggers.c w/src/backend/utils/adt/ri_triggers.c
index 591d2eb..ada1c95 100644
--- i/src/backend/utils/adt/ri_triggers.c
+++ w/src/backend/utils/adt/ri_triggers.c
@@ -255,7 +255,6 @@ RI_FKey_check(PG_FUNCTION_ARGS)
 	Relation	fk_rel;
 	Relation	pk_rel;
 	HeapTuple	new_row;
-	HeapTuple	old_row;
 	Buffer		new_row_buf;
 	RI_QueryKey qkey;
 	SPIPlanPtr	qplan;
@@ -274,13 +273,11 @@ RI_FKey_check(PG_FUNCTION_ARGS)
 
 	if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
 	{
-		old_row = trigdata->tg_trigtuple;
 		new_row = trigdata->tg_newtuple;
 		new_row_buf = trigdata->tg_newtuplebuf;
 	}
 	else
 	{
-		old_row = NULL;
 		new_row = trigdata->tg_trigtuple;
 		new_row_buf = trigdata->tg_trigtuplebuf;
 	}
diff --git i/src/backend/utils/adt/selfuncs.c w/src/backend/utils/adt/selfuncs.c
index f7358d1..9187f65 100644
--- i/src/backend/utils/adt/selfuncs.c
+++ w/src/backend/utils/adt/selfuncs.c
@@ -1081,7 +1081,6 @@ patternsel(PG_FUNCTION_ARGS, Pattern_Type ptype, bool negate)
 	List	   *args = (List *) PG_GETARG_POINTER(2);
 	int			varRelid = PG_GETARG_INT32(3);
 	VariableStatData vardata;
-	Node	   *variable;
 	Node	   *other;
 	bool		varonleft;
 	Datum		constval;
@@ -1123,7 +1122,6 @@ patternsel(PG_FUNCTION_ARGS, Pattern_Type ptype, bool negate)
 		ReleaseVariableStats(vardata);
 		return result;
 	}
-	variable = (Node *) linitial(args);
 
 	/*
 	 * If the constant is NULL, assume operator is strict and return zero, ie,
@@ -2286,7 +2284,6 @@ eqjoinsel_semi(Oid operator,
 	double		nd1;
 	double		nd2;
 	Form_pg_statistic stats1 = NULL;
-	Form_pg_statistic stats2 = NULL;
 	bool		have_mcvs1 = false;
 	Datum	   *values1 = NULL;
 	int			nvalues1 = 0;
@@ -2316,7 +2313,6 @@ eqjoinsel_semi(Oid operator,
 
 	if (HeapTupleIsValid(vardata2->statsTuple))
 	{
-		stats2 = (Form_pg_statistic) GETSTRUCT(vardata2->statsTuple);
 		have_mcvs2 = get_attstatsslot(vardata2->statsTuple,
 									  vardata2->atttype,
 									  vardata2->atttypmod,
@@ -4410,7 +4406,6 @@ get_variable_range(PlannerInfo *root, VariableStatData *vardata, Oid sortop,
 	Datum		tmin = 0;
 	Datum		tmax = 0;
 	bool		have_data = false;
-	Form_pg_statistic stats;
 	int16		typLen;
 	bool		typByVal;
 	Datum	   *values;
@@ -4434,7 +4429,6 @@ get_variable_range(PlannerInfo *root, VariableStatData *vardata, Oid sortop,
 		/* no stats available, so default result */
 		return false;
 	}
-	stats = (Form_pg_statistic) GETSTRUCT(vardata->statsTuple);
 
 	get_typlenbyval(vardata->atttype, &typLen, &typByVal);
 
diff --git i/src/bin/pg_basebackup/pg_basebackup.c w/src/bin/pg_basebackup/pg_basebackup.c
index 9f926bd..b44f821 100644
--- i/src/bin/pg_basebackup/pg_basebackup.c
+++ w/src/bin/pg_basebackup/pg_basebackup.c
@@ -755,7 +755,7 @@ static void
 BaseBackup(void)
 {
 	PGresult   *res;
-	uint32		timeline;
+	uint32		timeline; // XXX: not used?!?
 	char		current_path[MAXPGPATH];
 	char		escaped_label[MAXPGPATH];
 	int			i;
diff --git i/src/bin/pg_dump/common.c w/src/bin/pg_dump/common.c
index 472760e..c419c2d 100644
--- i/src/bin/pg_dump/common.c
+++ w/src/bin/pg_dump/common.c
@@ -80,24 +80,9 @@ static int	strInArray(const char *pattern, char **arr, int arr_size);
 TableInfo *
 getSchemaData(int *numTablesPtr)
 {
-	NamespaceInfo *nsinfo;
 	ExtensionInfo *extinfo;
-	AggInfo    *agginfo;
 	InhInfo    *inhinfo;
-	RuleInfo   *ruleinfo;
-	ProcLangInfo *proclanginfo;
-	CastInfo   *castinfo;
-	OpclassInfo *opcinfo;
-	OpfamilyInfo *opfinfo;
 	CollInfo   *collinfo;
-	ConvInfo   *convinfo;
-	TSParserInfo *prsinfo;
-	TSTemplateInfo *tmplinfo;
-	TSDictInfo *dictinfo;
-	TSConfigInfo *cfginfo;
-	FdwInfo    *fdwinfo;
-	ForeignServerInfo *srvinfo;
-	DefaultACLInfo *daclinfo;
 	int			numNamespaces;
 	int			numExtensions;
 	int			numAggregates;
@@ -118,7 +103,7 @@ getSchemaData(int *numTablesPtr)
 
 	if (g_verbose)
 		write_msg(NULL, "reading schemas\n");
-	nsinfo = getNamespaces(&numNamespaces);
+	getNamespaces(&numNamespaces);
 
 	if (g_verbose)
 		write_msg(NULL, "reading extensions\n");
@@ -138,11 +123,11 @@ getSchemaData(int *numTablesPtr)
 	/* this must be after getFuncs, too */
 	if (g_verbose)
 		write_msg(NULL, "reading procedural languages\n");
-	proclanginfo = getProcLangs(&numProcLangs);
+	getProcLangs(&numProcLangs);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined aggregate functions\n");
-	agginfo = getAggregates(&numAggregates);
+	getAggregates(&numAggregates);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined operators\n");
@@ -151,39 +136,39 @@ getSchemaData(int *numTablesPtr)
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined operator classes\n");
-	opcinfo = getOpclasses(&numOpclasses);
+	getOpclasses(&numOpclasses);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined operator families\n");
-	opfinfo = getOpfamilies(&numOpfamilies);
+	getOpfamilies(&numOpfamilies);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined text search parsers\n");
-	prsinfo = getTSParsers(&numTSParsers);
+	getTSParsers(&numTSParsers);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined text search templates\n");
-	tmplinfo = getTSTemplates(&numTSTemplates);
+	getTSTemplates(&numTSTemplates);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined text search dictionaries\n");
-	dictinfo = getTSDictionaries(&numTSDicts);
+	getTSDictionaries(&numTSDicts);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined text search configurations\n");
-	cfginfo = getTSConfigurations(&numTSConfigs);
+	getTSConfigurations(&numTSConfigs);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined foreign-data wrappers\n");
-	fdwinfo = getForeignDataWrappers(&numForeignDataWrappers);
+	getForeignDataWrappers(&numForeignDataWrappers);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined foreign servers\n");
-	srvinfo = getForeignServers(&numForeignServers);
+	getForeignServers(&numForeignServers);
 
 	if (g_verbose)
 		write_msg(NULL, "reading default privileges\n");
-	daclinfo = getDefaultACLs(&numDefaultACLs);
+	getDefaultACLs(&numDefaultACLs);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined collations\n");
@@ -192,11 +177,11 @@ getSchemaData(int *numTablesPtr)
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined conversions\n");
-	convinfo = getConversions(&numConversions);
+	getConversions(&numConversions);
 
 	if (g_verbose)
 		write_msg(NULL, "reading type casts\n");
-	castinfo = getCasts(&numCasts);
+	getCasts(&numCasts);
 
 	if (g_verbose)
 		write_msg(NULL, "reading user-defined tables\n");
@@ -209,7 +194,7 @@ getSchemaData(int *numTablesPtr)
 
 	if (g_verbose)
 		write_msg(NULL, "reading rewrite rules\n");
-	ruleinfo = getRules(&numRules);
+	getRules(&numRules);
 
 	/*
 	 * Identify extension member objects and mark them as not to be dumped.
diff --git i/src/bin/pg_dump/pg_backup_custom.c w/src/bin/pg_dump/pg_backup_custom.c
index 87c6fb6..9b2054c 100644
--- i/src/bin/pg_dump/pg_backup_custom.c
+++ w/src/bin/pg_dump/pg_backup_custom.c
@@ -237,7 +237,6 @@ _WriteExtraToc(ArchiveHandle *AH, TocEntry *te)
 static void
 _ReadExtraToc(ArchiveHandle *AH, TocEntry *te)
 {
-	int			junk;
 	lclTocEntry *ctx = (lclTocEntry *) te->formatData;
 
 	if (ctx == NULL)
@@ -253,7 +252,7 @@ _ReadExtraToc(ArchiveHandle *AH, TocEntry *te)
 	 * dump it at all.
 	 */
 	if (AH->version < K_VERS_1_7)
-		junk = ReadInt(AH);
+		ReadInt(AH);
 }
 
 /*
diff --git i/src/bin/pg_dump/pg_dump.c w/src/bin/pg_dump/pg_dump.c
index 5561295..a9c8da4 100644
--- i/src/bin/pg_dump/pg_dump.c
+++ w/src/bin/pg_dump/pg_dump.c
@@ -7312,8 +7312,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 	char	   *typmodin;
 	char	   *typmodout;
 	char	   *typanalyze;
-	Oid			typinputoid;
-	Oid			typoutputoid;
 	Oid			typreceiveoid;
 	Oid			typsendoid;
 	Oid			typmodinoid;
@@ -7338,8 +7336,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 		appendPQExpBuffer(query, "SELECT typlen, "
 						  "typinput, typoutput, typreceive, typsend, "
 						  "typmodin, typmodout, typanalyze, "
-						  "typinput::pg_catalog.oid AS typinputoid, "
-						  "typoutput::pg_catalog.oid AS typoutputoid, "
 						  "typreceive::pg_catalog.oid AS typreceiveoid, "
 						  "typsend::pg_catalog.oid AS typsendoid, "
 						  "typmodin::pg_catalog.oid AS typmodinoid, "
@@ -7358,8 +7354,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 		appendPQExpBuffer(query, "SELECT typlen, "
 						  "typinput, typoutput, typreceive, typsend, "
 						  "typmodin, typmodout, typanalyze, "
-						  "typinput::pg_catalog.oid AS typinputoid, "
-						  "typoutput::pg_catalog.oid AS typoutputoid, "
 						  "typreceive::pg_catalog.oid AS typreceiveoid, "
 						  "typsend::pg_catalog.oid AS typsendoid, "
 						  "typmodin::pg_catalog.oid AS typmodinoid, "
@@ -7379,8 +7373,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 		appendPQExpBuffer(query, "SELECT typlen, "
 						  "typinput, typoutput, typreceive, typsend, "
 						  "typmodin, typmodout, typanalyze, "
-						  "typinput::pg_catalog.oid AS typinputoid, "
-						  "typoutput::pg_catalog.oid AS typoutputoid, "
 						  "typreceive::pg_catalog.oid AS typreceiveoid, "
 						  "typsend::pg_catalog.oid AS typsendoid, "
 						  "typmodin::pg_catalog.oid AS typmodinoid, "
@@ -7400,8 +7392,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 						  "typinput, typoutput, typreceive, typsend, "
 						  "'-' AS typmodin, '-' AS typmodout, "
 						  "typanalyze, "
-						  "typinput::pg_catalog.oid AS typinputoid, "
-						  "typoutput::pg_catalog.oid AS typoutputoid, "
 						  "typreceive::pg_catalog.oid AS typreceiveoid, "
 						  "typsend::pg_catalog.oid AS typsendoid, "
 						  "0 AS typmodinoid, 0 AS typmodoutoid, "
@@ -7420,8 +7410,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 						  "typinput, typoutput, typreceive, typsend, "
 						  "'-' AS typmodin, '-' AS typmodout, "
 						  "'-' AS typanalyze, "
-						  "typinput::pg_catalog.oid AS typinputoid, "
-						  "typoutput::pg_catalog.oid AS typoutputoid, "
 						  "typreceive::pg_catalog.oid AS typreceiveoid, "
 						  "typsend::pg_catalog.oid AS typsendoid, "
 						  "0 AS typmodinoid, 0 AS typmodoutoid, "
@@ -7441,8 +7429,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 						  "'-' AS typreceive, '-' AS typsend, "
 						  "'-' AS typmodin, '-' AS typmodout, "
 						  "'-' AS typanalyze, "
-						  "typinput::pg_catalog.oid AS typinputoid, "
-						  "typoutput::pg_catalog.oid AS typoutputoid, "
 						  "0 AS typreceiveoid, 0 AS typsendoid, "
 						  "0 AS typmodinoid, 0 AS typmodoutoid, "
 						  "0 AS typanalyzeoid, "
@@ -7465,8 +7451,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 						  "'-' AS typreceive, '-' AS typsend, "
 						  "'-' AS typmodin, '-' AS typmodout, "
 						  "'-' AS typanalyze, "
-						  "typinput::oid AS typinputoid, "
-						  "typoutput::oid AS typoutputoid, "
 						  "0 AS typreceiveoid, 0 AS typsendoid, "
 						  "0 AS typmodinoid, 0 AS typmodoutoid, "
 						  "0 AS typanalyzeoid, "
@@ -7489,8 +7473,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 						  "'-' AS typreceive, '-' AS typsend, "
 						  "'-' AS typmodin, '-' AS typmodout, "
 						  "'-' AS typanalyze, "
-						  "typinput::oid AS typinputoid, "
-						  "typoutput::oid AS typoutputoid, "
 						  "0 AS typreceiveoid, 0 AS typsendoid, "
 						  "0 AS typmodinoid, 0 AS typmodoutoid, "
 						  "0 AS typanalyzeoid, "
@@ -7509,8 +7491,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 						  "'-' AS typreceive, '-' AS typsend, "
 						  "'-' AS typmodin, '-' AS typmodout, "
 						  "'-' AS typanalyze, "
-						  "typinput::oid AS typinputoid, "
-						  "typoutput::oid AS typoutputoid, "
 						  "0 AS typreceiveoid, 0 AS typsendoid, "
 						  "0 AS typmodinoid, 0 AS typmodoutoid, "
 						  "0 AS typanalyzeoid, "
@@ -7546,8 +7526,6 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
 	typmodin = PQgetvalue(res, 0, PQfnumber(res, "typmodin"));
 	typmodout = PQgetvalue(res, 0, PQfnumber(res, "typmodout"));
 	typanalyze = PQgetvalue(res, 0, PQfnumber(res, "typanalyze"));
-	typinputoid = atooid(PQgetvalue(res, 0, PQfnumber(res, "typinputoid")));
-	typoutputoid = atooid(PQgetvalue(res, 0, PQfnumber(res, "typoutputoid")));
 	typreceiveoid = atooid(PQgetvalue(res, 0, PQfnumber(res, "typreceiveoid")));
 	typsendoid = atooid(PQgetvalue(res, 0, PQfnumber(res, "typsendoid")));
 	typmodinoid = atooid(PQgetvalue(res, 0, PQfnumber(res, "typmodinoid")));
@@ -10141,10 +10119,8 @@ dumpCollation(Archive *fout, CollInfo *collinfo)
 	PQExpBuffer labelq;
 	PGresult   *res;
 	int			ntups;
-	int			i_collname;
 	int			i_collcollate;
 	int			i_collctype;
-	const char *collname;
 	const char *collcollate;
 	const char *collctype;
 
@@ -10161,7 +10137,7 @@ dumpCollation(Archive *fout, CollInfo *collinfo)
 	selectSourceSchema(collinfo->dobj.namespace->dobj.name);
 
 	/* Get conversion-specific details */
-	appendPQExpBuffer(query, "SELECT collname, "
+	appendPQExpBuffer(query, "SELECT "
 					  "collcollate, "
 					  "collctype "
 					  "FROM pg_catalog.pg_collation c "
@@ -10182,11 +10158,9 @@ dumpCollation(Archive *fout, CollInfo *collinfo)
 		exit_nicely();
 	}
 
-	i_collname = PQfnumber(res, "collname");
 	i_collcollate = PQfnumber(res, "collcollate");
 	i_collctype = PQfnumber(res, "collctype");
 
-	collname = PQgetvalue(res, 0, i_collname);
 	collcollate = PQgetvalue(res, 0, i_collcollate);
 	collctype = PQgetvalue(res, 0, i_collctype);
 
@@ -10246,12 +10220,10 @@ dumpConversion(Archive *fout, ConvInfo *convinfo)
 	PQExpBuffer labelq;
 	PGresult   *res;
 	int			ntups;
-	int			i_conname;
 	int			i_conforencoding;
 	int			i_contoencoding;
 	int			i_conproc;
 	int			i_condefault;
-	const char *conname;
 	const char *conforencoding;
 	const char *contoencoding;
 	const char *conproc;
@@ -10270,7 +10242,7 @@ dumpConversion(Archive *fout, ConvInfo *convinfo)
 	selectSourceSchema(convinfo->dobj.namespace->dobj.name);
 
 	/* Get conversion-specific details */
-	appendPQExpBuffer(query, "SELECT conname, "
+	appendPQExpBuffer(query, "SELECT "
 		 "pg_catalog.pg_encoding_to_char(conforencoding) AS conforencoding, "
 		   "pg_catalog.pg_encoding_to_char(contoencoding) AS contoencoding, "
 					  "conproc, condefault "
@@ -10292,13 +10264,11 @@ dumpConversion(Archive *fout, ConvInfo *convinfo)
 		exit_nicely();
 	}
 
-	i_conname = PQfnumber(res, "conname");
 	i_conforencoding = PQfnumber(res, "conforencoding");
 	i_contoencoding = PQfnumber(res, "contoencoding");
 	i_conproc = PQfnumber(res, "conproc");
 	i_condefault = PQfnumber(res, "condefault");
 
-	conname = PQgetvalue(res, 0, i_conname);
 	conforencoding = PQgetvalue(res, 0, i_conforencoding);
 	contoencoding = PQgetvalue(res, 0, i_contoencoding);
 	conproc = PQgetvalue(res, 0, i_conproc);
@@ -11771,7 +11741,6 @@ dumpTableSchema(Archive *fout, TableInfo *tbinfo)
 	char	   *storage;
 	int			j,
 				k;
-	bool		toast_set = false;
 	char	   *srvname;
 	char	   *ftoptions = NULL;
 
@@ -11779,7 +11748,7 @@ dumpTableSchema(Archive *fout, TableInfo *tbinfo)
 	selectSourceSchema(tbinfo->dobj.namespace->dobj.name);
 
 	if (binary_upgrade)
-		toast_set = binary_upgrade_set_type_oids_by_rel_oid(q,
+		binary_upgrade_set_type_oids_by_rel_oid(q,
 													 tbinfo->dobj.catId.oid);
 
 	/* Is it a table or a view? */
diff --git i/src/bin/pg_dump/pg_dumpall.c w/src/bin/pg_dump/pg_dumpall.c
index 9082653..00afd74 100644
--- i/src/bin/pg_dump/pg_dumpall.c
+++ w/src/bin/pg_dump/pg_dumpall.c
@@ -91,7 +91,6 @@ main(int argc, char *argv[])
 	bool		output_clean = false;
 	bool		roles_only = false;
 	bool		tablespaces_only = false;
-	bool		schema_only = false;
 	PGconn	   *conn;
 	int			encoding;
 	const char *std_strings;
@@ -241,7 +240,6 @@ main(int argc, char *argv[])
 				break;
 
 			case 's':
-				schema_only = true;
 				appendPQExpBuffer(pgdumpopts, " -s");
 				break;
 
@@ -632,7 +630,6 @@ dumpRoles(PGconn *conn)
 				i_rolinherit,
 				i_rolcreaterole,
 				i_rolcreatedb,
-				i_rolcatupdate,
 				i_rolcanlogin,
 				i_rolconnlimit,
 				i_rolpassword,
@@ -645,7 +642,7 @@ dumpRoles(PGconn *conn)
 	if (server_version >= 90100)
 		printfPQExpBuffer(buf,
 						  "SELECT oid, rolname, rolsuper, rolinherit, "
-						  "rolcreaterole, rolcreatedb, rolcatupdate, "
+						  "rolcreaterole, rolcreatedb, "
 						  "rolcanlogin, rolconnlimit, rolpassword, "
 						  "rolvaliduntil, rolreplication, "
 			  "pg_catalog.shobj_description(oid, 'pg_authid') as rolcomment "
@@ -654,7 +651,7 @@ dumpRoles(PGconn *conn)
 	else if (server_version >= 80200)
 		printfPQExpBuffer(buf,
 						  "SELECT oid, rolname, rolsuper, rolinherit, "
-						  "rolcreaterole, rolcreatedb, rolcatupdate, "
+						  "rolcreaterole, rolcreatedb, "
 						  "rolcanlogin, rolconnlimit, rolpassword, "
 						  "rolvaliduntil, false as rolreplication, "
 			  "pg_catalog.shobj_description(oid, 'pg_authid') as rolcomment "
@@ -663,7 +660,7 @@ dumpRoles(PGconn *conn)
 	else if (server_version >= 80100)
 		printfPQExpBuffer(buf,
 						  "SELECT oid, rolname, rolsuper, rolinherit, "
-						  "rolcreaterole, rolcreatedb, rolcatupdate, "
+						  "rolcreaterole, rolcreatedb, "
 						  "rolcanlogin, rolconnlimit, rolpassword, "
 						  "rolvaliduntil, false as rolreplication, "
 						  "null as rolcomment "
@@ -676,7 +673,6 @@ dumpRoles(PGconn *conn)
 						  "true as rolinherit, "
 						  "usesuper as rolcreaterole, "
 						  "usecreatedb as rolcreatedb, "
-						  "usecatupd as rolcatupdate, "
 						  "true as rolcanlogin, "
 						  "-1 as rolconnlimit, "
 						  "passwd as rolpassword, "
@@ -690,7 +686,6 @@ dumpRoles(PGconn *conn)
 						  "true as rolinherit, "
 						  "false as rolcreaterole, "
 						  "false as rolcreatedb, "
-						  "false as rolcatupdate, "
 						  "false as rolcanlogin, "
 						  "-1 as rolconnlimit, "
 						  "null::text as rolpassword, "
@@ -710,7 +705,6 @@ dumpRoles(PGconn *conn)
 	i_rolinherit = PQfnumber(res, "rolinherit");
 	i_rolcreaterole = PQfnumber(res, "rolcreaterole");
 	i_rolcreatedb = PQfnumber(res, "rolcreatedb");
-	i_rolcatupdate = PQfnumber(res, "rolcatupdate");
 	i_rolcanlogin = PQfnumber(res, "rolcanlogin");
 	i_rolconnlimit = PQfnumber(res, "rolconnlimit");
 	i_rolpassword = PQfnumber(res, "rolpassword");
diff --git i/src/bin/psql/psqlscan.l w/src/bin/psql/psqlscan.l
index 3575f91..dfc6648 100644
--- i/src/bin/psql/psqlscan.l
+++ w/src/bin/psql/psqlscan.l
@@ -1384,7 +1384,6 @@ char *
 psql_scan_slash_command(PsqlScanState state)
 {
 	PQExpBufferData mybuf;
-	int			lexresult;
 
 	/* Must be scanning already */
 	psql_assert(state->scanbufhandle);
@@ -1404,7 +1403,7 @@ psql_scan_slash_command(PsqlScanState state)
 	BEGIN(xslashcmd);
 
 	/* And lex. */
-	lexresult = yylex();
+	yylex();
 
 	/* There are no possible errors in this lex state... */
 
@@ -1641,8 +1640,6 @@ psql_scan_slash_option(PsqlScanState state,
 void
 psql_scan_slash_command_end(PsqlScanState state)
 {
-	int			lexresult;
-
 	/* Must be scanning already */
 	psql_assert(state->scanbufhandle);
 
@@ -1658,7 +1655,7 @@ psql_scan_slash_command_end(PsqlScanState state)
 	BEGIN(xslashend);
 
 	/* And lex. */
-	lexresult = yylex();
+	yylex();
 
 	/* There are no possible errors in this lex state... */
 }
diff --git i/src/interfaces/ecpg/ecpglib/descriptor.c w/src/interfaces/ecpg/ecpglib/descriptor.c
index c9d960a..a63ed35 100644
--- i/src/interfaces/ecpg/ecpglib/descriptor.c
+++ w/src/interfaces/ecpg/ecpglib/descriptor.c
@@ -764,11 +764,8 @@ ECPGdescribe(int line, int compat, bool input, const char *connection_name, cons
 
 	for (;;)
 	{
-		enum ECPGttype type,
-					dummy_type;
-		void	   *ptr,
-				   *dummy_ptr;
-		long		dummy;
+		enum ECPGttype type;
+		void	   *ptr;
 
 		/* variable type */
 		type = va_arg(args, enum ECPGttype);
@@ -778,16 +775,16 @@ ECPGdescribe(int line, int compat, bool input, const char *connection_name, cons
 
 		/* rest of variable parameters */
 		ptr = va_arg(args, void *);
-		dummy = va_arg(args, long);
-		dummy = va_arg(args, long);
-		dummy = va_arg(args, long);
+		va_arg(args, long);
+		va_arg(args, long);
+		va_arg(args, long);
 
 		/* variable indicator */
-		dummy_type = va_arg(args, enum ECPGttype);
-		dummy_ptr = va_arg(args, void *);
-		dummy = va_arg(args, long);
-		dummy = va_arg(args, long);
-		dummy = va_arg(args, long);
+		va_arg(args, enum ECPGttype);
+		va_arg(args, void *);
+		va_arg(args, long);
+		va_arg(args, long);
+		va_arg(args, long);
 
 		switch (type)
 		{
diff --git i/src/interfaces/libpq/fe-auth.c w/src/interfaces/libpq/fe-auth.c
index 7d2ef51..c2ca0dc 100644
--- i/src/interfaces/libpq/fe-auth.c
+++ w/src/interfaces/libpq/fe-auth.c
@@ -320,14 +320,13 @@ static void
 pg_GSS_error_int(PQExpBuffer str, const char *mprefix,
 				 OM_uint32 stat, int type)
 {
-	OM_uint32	lmaj_s,
-				lmin_s;
+	OM_uint32	lmin_s;
 	gss_buffer_desc lmsg;
 	OM_uint32	msg_ctx = 0;
 
 	do
 	{
-		lmaj_s = gss_display_status(&lmin_s, stat, type,
+		gss_display_status(&lmin_s, stat, type,
 									GSS_C_NO_OID, &msg_ctx, &lmsg);
 		appendPQExpBuffer(str, "%s: %s\n", mprefix, (char *) lmsg.value);
 		gss_release_buffer(&lmin_s, &lmsg);
diff --git i/src/pl/plpgsql/src/pl_exec.c w/src/pl/plpgsql/src/pl_exec.c
index f793991..43a1d1a 100644
--- i/src/pl/plpgsql/src/pl_exec.c
+++ w/src/pl/plpgsql/src/pl_exec.c
@@ -1913,7 +1913,6 @@ exec_stmt_forc(PLpgSQL_execstate *estate, PLpgSQL_stmt_forc *stmt)
 {
 	PLpgSQL_var *curvar;
 	char	   *curname = NULL;
-	const char *portalname;
 	PLpgSQL_expr *query;
 	ParamListInfo paramLI;
 	Portal		portal;
@@ -1997,7 +1996,6 @@ exec_stmt_forc(PLpgSQL_execstate *estate, PLpgSQL_stmt_forc *stmt)
 	if (portal == NULL)
 		elog(ERROR, "could not open cursor: %s",
 			 SPI_result_code_string(SPI_result));
-	portalname = portal->name;
 
 	/* don't need paramlist any more */
 	if (paramLI)