diff --git a/contrib/chkpass/chkpass.c b/contrib/chkpass/chkpass.c
index 0832993bd752b5a2c67a23ead69ae7fcddebc099..8dda0bc4ad513e94f0f681a80d097ffcacb023b9 100644
--- a/contrib/chkpass/chkpass.c
+++ b/contrib/chkpass/chkpass.c
@@ -4,7 +4,7 @@
  * darcy@druid.net
  * http://www.druid.net/darcy/
  *
- * $PostgreSQL: pgsql/contrib/chkpass/chkpass.c,v 1.12 2003/11/29 22:39:18 pgsql Exp $
+ * $PostgreSQL: pgsql/contrib/chkpass/chkpass.c,v 1.13 2005/01/29 22:35:01 tgl Exp $
  * best viewed with tabs set to 4
  */
 
@@ -82,14 +82,10 @@ chkpass_in(PG_FUNCTION_ARGS)
 	}
 
 	if (verify_pass(str) != 0)
-	{
 		ereport(ERROR,
 				(errcode(ERRCODE_DATA_EXCEPTION),
 				 errmsg("password \"%s\" is weak", str)));
 
-		PG_RETURN_POINTER(NULL);
-	}
-
 	result = (chkpass *) palloc(sizeof(chkpass));
 
 	mysalt[0] = salt_chars[random() & 0x3f];
@@ -112,9 +108,6 @@ chkpass_out(PG_FUNCTION_ARGS)
 	chkpass    *password = (chkpass *) PG_GETARG_POINTER(0);
 	char	   *result;
 
-	if (password == NULL)
-		PG_RETURN_POINTER(NULL);
-
 	if ((result = (char *) palloc(16)) != NULL)
 	{
 		result[0] = ':';
@@ -134,10 +127,7 @@ Datum
 chkpass_rout(PG_FUNCTION_ARGS)
 {
 	chkpass    *password = (chkpass *) PG_GETARG_POINTER(0);
-	text	   *result = NULL;
-
-	if (password == NULL)
-		PG_RETURN_POINTER(NULL);
+	text	   *result;
 
 	if ((result = (text *) palloc(VARHDRSZ + 16)) != NULL)
 	{
@@ -162,9 +152,6 @@ chkpass_eq(PG_FUNCTION_ARGS)
 	char		str[10];
 	int			sz = 8;
 
-	if (!a1 || !a2)
-		PG_RETURN_BOOL(0);
-
 	if (a2->vl_len < 12)
 		sz = a2->vl_len - 4;
 	strncpy(str, a2->vl_dat, sz);
@@ -181,8 +168,6 @@ chkpass_ne(PG_FUNCTION_ARGS)
 	char		str[10];
 	int			sz = 8;
 
-	if (!a1 || !a2)
-		PG_RETURN_BOOL(0);
 	if (a2->vl_len < 12)
 		sz = a2->vl_len - 4;
 	strncpy(str, a2->vl_dat, sz);
diff --git a/contrib/chkpass/chkpass.sql.in b/contrib/chkpass/chkpass.sql.in
index 501edbdc9be705f17bb84ca1cc43f036f865a3ab..68cd1e27659a3029d83e5e06e49961e837ef7253 100644
--- a/contrib/chkpass/chkpass.sql.in
+++ b/contrib/chkpass/chkpass.sql.in
@@ -4,7 +4,7 @@
 --  darcy@druid.net
 --  http://www.druid.net/darcy/
 -- 
---  $PostgreSQL: pgsql/contrib/chkpass/chkpass.sql.in,v 1.5 2003/11/29 19:51:19 pgsql Exp $
+--  $PostgreSQL: pgsql/contrib/chkpass/chkpass.sql.in,v 1.6 2005/01/29 22:35:01 tgl Exp $
 --
 --  best viewed with tabs set to 4
 --
@@ -19,12 +19,12 @@ SET search_path = public;
 CREATE FUNCTION chkpass_in(cstring)
 	RETURNS chkpass
 	AS 'MODULE_PATHNAME'
-	LANGUAGE 'c';
+	LANGUAGE C STRICT;
 
 CREATE FUNCTION chkpass_out(chkpass)
 	RETURNS cstring
 	AS 'MODULE_PATHNAME'
-	LANGUAGE 'c';
+	LANGUAGE C STRICT;
 
 CREATE TYPE chkpass (
 	internallength = 16,
@@ -36,7 +36,7 @@ CREATE TYPE chkpass (
 CREATE FUNCTION raw(chkpass)
 	RETURNS text
 	AS 'MODULE_PATHNAME', 'chkpass_rout'
-	LANGUAGE 'c';
+	LANGUAGE C STRICT;
 
 --
 --	The various boolean tests:
@@ -45,12 +45,12 @@ CREATE FUNCTION raw(chkpass)
 CREATE FUNCTION eq(chkpass, text)
 	RETURNS bool
 	AS 'MODULE_PATHNAME', 'chkpass_eq'
-	LANGUAGE 'c';
+	LANGUAGE C STRICT;
 
 CREATE FUNCTION ne(chkpass, text)
 	RETURNS bool
 	AS 'MODULE_PATHNAME', 'chkpass_ne'
-	LANGUAGE 'c';
+	LANGUAGE C STRICT;
 
 --
 --	Now the operators.  Note how some of the parameters to some
diff --git a/contrib/isbn_issn/isbn_issn.sql.in b/contrib/isbn_issn/isbn_issn.sql.in
index db2efce41c0964d1e27f89a08ca92fffa65c305d..740296cdf739cf2a9b093f87c0fc2d1d43499574 100644
--- a/contrib/isbn_issn/isbn_issn.sql.in
+++ b/contrib/isbn_issn/isbn_issn.sql.in
@@ -1,7 +1,7 @@
 --
 --	PostgreSQL code for ISSNs.
 --
---	$PostgreSQL: pgsql/contrib/isbn_issn/isbn_issn.sql.in,v 1.10 2003/11/29 22:39:20 pgsql Exp $
+--	$PostgreSQL: pgsql/contrib/isbn_issn/isbn_issn.sql.in,v 1.11 2005/01/29 22:35:02 tgl Exp $
 --
 
 -- Adjust this setting to control where the objects get created.
@@ -14,12 +14,12 @@ SET search_path = public;
 CREATE FUNCTION issn_in(cstring)
 RETURNS issn
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION issn_out(issn)
 RETURNS cstring
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE TYPE issn (
 	INTERNALLENGTH = 16,
@@ -39,32 +39,32 @@ COMMENT ON TYPE issn
 CREATE FUNCTION issn_lt(issn, issn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION issn_le(issn, issn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION issn_eq(issn, issn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION issn_ge(issn, issn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION issn_gt(issn, issn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION issn_ne(issn, issn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 --
 --	Now the operators.  Note how some of the parameters to some
@@ -120,7 +120,7 @@ CREATE OPERATOR <> (
 CREATE FUNCTION issn_cmp(issn, issn)
 RETURNS integer
 AS '$libdir/isbn_issn'
-LANGUAGE c;
+LANGUAGE c STRICT;
 
 -- Create default operator class for 'issn'    --
 -- Needed to create index or primary key       --
@@ -147,12 +147,12 @@ AS
 CREATE FUNCTION isbn_in(cstring)
 RETURNS isbn
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION isbn_out(isbn)
 RETURNS cstring
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE TYPE isbn (
 	INTERNALLENGTH = 16,
@@ -171,32 +171,32 @@ COMMENT ON TYPE isbn IS 'International Standard Book Number';
 CREATE FUNCTION isbn_lt(isbn, isbn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION isbn_le(isbn, isbn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION isbn_eq(isbn, isbn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION isbn_ge(isbn, isbn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION isbn_gt(isbn, isbn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 CREATE FUNCTION isbn_ne(isbn, isbn)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 --
 --	Now the operators.  Note how some of the parameters to some
@@ -253,7 +253,7 @@ CREATE OPERATOR <> (
 CREATE FUNCTION isbn_cmp(isbn, isbn)
 RETURNS integer
 AS '$libdir/isbn_issn'
-LANGUAGE c;
+LANGUAGE c STRICT;
 
 -- Create default operator class for 'isbn'    --
 -- Needed to create index or primary key       --
diff --git a/contrib/lo/lo.sql.in b/contrib/lo/lo.sql.in
index 54ea1016020d43e9a35f8ac1ec75ea0bb9f68899..7be68453f77d4334009f6d6844bb736f33ce3053 100644
--- a/contrib/lo/lo.sql.in
+++ b/contrib/lo/lo.sql.in
@@ -1,7 +1,7 @@
 --
 --	PostgreSQL code for LargeObjects
 --
---	$PostgreSQL: pgsql/contrib/lo/lo.sql.in,v 1.11 2003/11/29 22:39:22 pgsql Exp $
+--	$PostgreSQL: pgsql/contrib/lo/lo.sql.in,v 1.12 2005/01/29 22:35:02 tgl Exp $
 --
 --
 --	Create the data type
@@ -15,13 +15,13 @@ SET search_path = public;
 CREATE FUNCTION lo_in(cstring)
 RETURNS lo
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C' IMMUTABLE;
+LANGUAGE C IMMUTABLE STRICT;
 
 -- used by the lo type, it returns the oid of the object
 CREATE FUNCTION lo_out(lo)
 RETURNS cstring
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C' IMMUTABLE;
+LANGUAGE C IMMUTABLE STRICT;
 
 -- finally the type itself
 CREATE TYPE lo (
@@ -35,7 +35,7 @@ CREATE TYPE lo (
 CREATE FUNCTION lo_oid(lo)
 RETURNS oid
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C' IMMUTABLE;
+LANGUAGE C IMMUTABLE STRICT;
 
 -- same function, named to allow it to be used as a type coercion, eg:
 --    CREATE TABLE a (image lo);
@@ -44,7 +44,7 @@ LANGUAGE 'C' IMMUTABLE;
 CREATE FUNCTION oid(lo)
 RETURNS oid
 AS 'MODULE_PATHNAME', 'lo_oid'
-LANGUAGE 'C' IMMUTABLE;
+LANGUAGE C IMMUTABLE STRICT;
 CREATE CAST (lo as oid) WITH FUNCTION oid(lo) AS IMPLICIT;
 
 -- this allows us to convert an oid to a managed lo object
@@ -52,11 +52,11 @@ CREATE CAST (lo as oid) WITH FUNCTION oid(lo) AS IMPLICIT;
 CREATE FUNCTION lo(oid)
 RETURNS lo
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C' IMMUTABLE;
+LANGUAGE C IMMUTABLE STRICT;
 CREATE CAST (oid as lo) WITH FUNCTION lo(oid) AS IMPLICIT;
 
 -- This is used in triggers
 CREATE FUNCTION lo_manage()
 RETURNS trigger
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C;
diff --git a/contrib/miscutil/misc_utils.c b/contrib/miscutil/misc_utils.c
index cb0f4b8833d9476d4f012b331073a4ca1bc1c2ff..855addb48e5677e4cb1b0de2b90f0685925931e7 100644
--- a/contrib/miscutil/misc_utils.c
+++ b/contrib/miscutil/misc_utils.c
@@ -96,7 +96,7 @@ active_listeners(text *relname)
 	{
 		d = heap_getattr(lTuple, Anum_pg_listener_pid, tdesc, &isnull);
 		pid = DatumGetInt32(d);
-		if ((pid == ourpid) || (kill(pid, SIGTSTP) == 0))
+		if ((pid == ourpid) || (kill(pid, 0) == 0))
 			count++;
 	}
 	heap_endscan(sRel);
diff --git a/contrib/miscutil/misc_utils.sql.in b/contrib/miscutil/misc_utils.sql.in
index 5f777a1e5b6f0cc534a7916463acf94230bf22ef..7c1b5bf9ccb81183c7348f42829f766673d448e9 100644
--- a/contrib/miscutil/misc_utils.sql.in
+++ b/contrib/miscutil/misc_utils.sql.in
@@ -37,14 +37,14 @@ LANGUAGE 'SQL';
 CREATE OR REPLACE FUNCTION min(int4,int4)
 RETURNS int4
 AS 'MODULE_PATHNAME', 'int4min'
-LANGUAGE 'C';
+LANGUAGE 'C' STRICT;
 
 -- max(x,y)
 --
 CREATE OR REPLACE FUNCTION max(int4,int4)
 RETURNS int4
 AS 'MODULE_PATHNAME', 'int4max'
-LANGUAGE 'C';
+LANGUAGE 'C' STRICT;
 
 -- Return the number of active listeners on a relation
 --
diff --git a/contrib/userlock/user_locks.sql.in b/contrib/userlock/user_locks.sql.in
index 62689c55436fca182454bedf2f624162c6644da1..d5aa355b10f3b55df230912f8d75a6539a972d66 100644
--- a/contrib/userlock/user_locks.sql.in
+++ b/contrib/userlock/user_locks.sql.in
@@ -15,74 +15,74 @@ SET search_path = public;
 CREATE OR REPLACE FUNCTION user_lock(int4,int4,int4)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_unlock(group,id,mode);
 --
 CREATE OR REPLACE FUNCTION user_unlock(int4,int4,int4)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_write_lock(group,id);
 --
 CREATE OR REPLACE FUNCTION user_write_lock(int4,int4)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_write_unlock(group,id);
 --
 CREATE OR REPLACE FUNCTION user_write_unlock(int4,int4)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_write_lock(group,oid);
 --
 CREATE OR REPLACE FUNCTION user_write_lock(int4,oid)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_write_unlock(group,oid);
 --
 CREATE OR REPLACE FUNCTION user_write_unlock(int4,oid)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_write_lock_oid(oid);
 --
 CREATE OR REPLACE FUNCTION user_write_lock_oid(oid)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_write_unlock_oid(oid);
 --
 CREATE OR REPLACE FUNCTION user_write_unlock_oid(oid)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_write_lock_oid(int4);
 --
 CREATE OR REPLACE FUNCTION user_write_lock_oid(int4)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_write_unlock_oid(int4);
 --
 CREATE OR REPLACE FUNCTION user_write_unlock_oid(int4)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;
 
 -- SELECT user_unlock_all();
 --
 CREATE OR REPLACE FUNCTION user_unlock_all()
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE 'C';
+LANGUAGE C STRICT;