I have two patches for 6.5.0:

arrayfuncs.patch        fixes a small bug in my previous patches for
arrays

array-regress.patch     adds _bpchar and _varchar to regression tests

--
Massimo Dal Zotto

Author: bmomjian

src/backend/utils/adt/arrayfuncs.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/arrayfuncs.c,v 1.40 1999/05/03 23:48:26 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/arrayfuncs.c,v 1.41 1999/05/05 21:38:37 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1336,10 +1336,16 @@ array_map(ArrayType *v,
 	system_cache_lookup(retType, false, &typlen, &typbyval,
 						&typdelim, &typelem, &proc, &typalign);
 
-	/* Allocate temporary array for new values */
 	ndim   = ARR_NDIM(v);
 	dim    = ARR_DIMS(v);
 	nitems = getNitems(ndim, dim);
+
+	/* Check for empty array */
+	if (nitems <= 0) {
+		return v;
+	}
+
+	/* Allocate temporary array for new values */
 	values = (char **) palloc(nitems * sizeof(char *));
 	MemSet(values, 0, nitems * sizeof(char *));
 

src/test/regress/expected/arrays.out

@@ -1,9 +1,9 @@
 QUERY: SELECT * FROM arrtest;
-a          |b              |c            |d                |e            
------------+---------------+-------------+-----------------+-------------
-{1,2,3,4,5}|{{{0,0},{1,2}}}|{}           |{}               |             
-{11,12,23} |{{3,4},{4,5}}  |{"foobar"}   |{{"elt1","elt2"}}|{"3.4","6.7"}
-{}         |{3,4}          |{"foo","bar"}|{"bar","foo"}    |             
+a          |b              |c            |d                |e            |f                |g              
+-----------+---------------+-------------+-----------------+-------------+-----------------+---------------
+{1,2,3,4,5}|{{{0,0},{1,2}}}|{}           |{}               |             |{}               |{}             
+{11,12,23} |{{3,4},{4,5}}  |{"foobar"}   |{{"elt1","elt2"}}|{"3.4","6.7"}|{"abc  ","abcde"}|{"abc","abcde"}
+{}         |{3,4}          |{"foo","bar"}|{"bar","foo"}    |             |                 |               
 (3 rows)
 
 QUERY: SELECT arrtest.a[1],
@@ -43,8 +43,8 @@ QUERY: SELECT *
    FROM arrtest
    WHERE arrtest.a[1] < 5 and
          arrtest.c = '{"foobar"}'::_name;
-a|b|c|d|e
--+-+-+-+-
+a|b|c|d|e|f|g
+-+-+-+-+-+-+-
 (0 rows)
 
 QUERY: SELECT arrtest.a[1:3],

src/test/regress/expected/create_misc.out

@@ -114,13 +114,14 @@ QUERY: INSERT INTO f_star (class, e) VALUES ('f', '-12'::int2);
 QUERY: INSERT INTO f_star (class, f)
    VALUES ('f', '(11111111,33333333),(22222222,44444444)'::polygon);
 QUERY: INSERT INTO f_star (class) VALUES ('f');
-QUERY: INSERT INTO arrtest (a[5], b[2][1][2], c, d)
-   VALUES ('{1,2,3,4,5}', '{{{},{1,2}}}', '{}', '{}');
+QUERY: INSERT INTO arrtest (a[5], b[2][1][2], c, d, f, g)
+   VALUES ('{1,2,3,4,5}', '{{{},{1,2}}}', '{}', '{}', '{}', '{}');
 QUERY: UPDATE arrtest SET e[0] = '1.1';
 QUERY: UPDATE arrtest SET e[1] = '2.2';
-QUERY: INSERT INTO arrtest (a, b[2][2][1], c, d, e)
+QUERY: INSERT INTO arrtest (a, b[2][2][1], c, d, e, f, g)
    VALUES ('{11,12,23}', '{{3,4},{4,5}}', '{"foobar"}',
-           '{{"elt1", "elt2"}}', '{"3.4", "6.7"}');
+           '{{"elt1", "elt2"}}', '{"3.4", "6.7"}',
+           '{"abc","abcdefgh"}', '{"abc","abcdefgh"}');
 QUERY: INSERT INTO arrtest (a, b[1][2][2], c, d[2][1])
    VALUES ('{}', '{3,4}', '{foo,bar}', '{bar,foo}');
 QUERY: CREATE TABLE iportaltest (

src/test/regress/expected/create_table.out

@@ -131,7 +131,9 @@ QUERY: CREATE TABLE arrtest (
 	b 		int4[][][],
 	c 		name[],
 	d		text[][],
-	e 		float8[]
+	e 		float8[],
+	f		char(5)[],
+	g		varchar(5)[]
 );
 QUERY: CREATE TABLE hash_i4_heap (
 	seqno 		int4,

src/test/regress/sql/create_misc.sql

@@ -198,16 +198,17 @@ INSERT INTO f_star (class) VALUES ('f');
 -- 'e' is also a large object.
 --
 
-INSERT INTO arrtest (a[5], b[2][1][2], c, d)
-   VALUES ('{1,2,3,4,5}', '{{{},{1,2}}}', '{}', '{}');
+INSERT INTO arrtest (a[5], b[2][1][2], c, d, f, g)
+   VALUES ('{1,2,3,4,5}', '{{{},{1,2}}}', '{}', '{}', '{}', '{}');
 
 UPDATE arrtest SET e[0] = '1.1';
 
 UPDATE arrtest SET e[1] = '2.2';
 
-INSERT INTO arrtest (a, b[2][2][1], c, d, e)
+INSERT INTO arrtest (a, b[2][2][1], c, d, e, f, g)
    VALUES ('{11,12,23}', '{{3,4},{4,5}}', '{"foobar"}', 
-           '{{"elt1", "elt2"}}', '{"3.4", "6.7"}');
+           '{{"elt1", "elt2"}}', '{"3.4", "6.7"}',
+           '{"abc","abcdefgh"}', '{"abc","abcdefgh"}');
 
 INSERT INTO arrtest (a, b[1][2][2], c, d[2][1])
    VALUES ('{}', '{3,4}', '{foo,bar}', '{bar,foo}');

src/test/regress/sql/create_table.sql

@@ -178,7 +178,9 @@ CREATE TABLE arrtest (
 	b 		int4[][][],
 	c 		name[],
 	d		text[][], 
-	e 		float8[]
+	e 		float8[],
+	f		char(5)[],
+	g		varchar(5)[]
 );
 
 CREATE TABLE hash_i4_heap (