No support for int8 sized binary/hex literals

Steffen Hulegaard (9sch1@txl.com) reports a bug with a severity of 2
The lower the number the more severe it is.

Short Description
No support for int8 sized binary/hex literals

Long Description
The B'111...' and X'1F...' SQL92 literal syntax is limited to
int4 sized literals. Any attempt to use an int8 sized literal

int4/32-bit word size fails. This makes it impossible to specify

many int8 sized bit patterns as column default values. It makes
it impossible to even insert > 32bit sized binary/hex values.
Failure to support SQL92 literals for int8 types dramatically
limits and/or complicates the use of int8 bit/nibble/byte composed
values (bit fields, nibble/byte patterns, etc.)

Sample Code
/* $Id$
 +--------------------------------------------------------------------
 | No Copyright.  Public Domain.
 +--------------------------------------------------------------------
 | 
 | bug5.sql	     32 bit limit on SQL92 numeric literals
 |
 | Major Annoyance:  Any attempt to use SQL92 string literals 
 |                   (B'0101...' or X'1fa945...') whose values 
 |                   exceed the 32 bit limit fail.  This dramatically 
 |                   limits and/or complicates usage of int8 types 
 |                   for either bit fields or byte/nibble fields.  
 |                   You cannot define default values for 
 |                   int8 fields with binary or hex literals due 
 |                   to this limitation.  
 |
 | Environment ----------------------------------------------------
 | RedHat 6.2 
 | select version();
 |    PostgreSQL 7.0.2 on i686-pc-linux-gnu, compiled by gcc egcs-2.91.66
 | # rpm -qi postgresql-7.0.2-2
 | Name        : postgresql                   Relocations: /usr 
 | Version     : 7.0.2                             Vendor: The Ramifordistat
 | Release     : 2                             Build Date: Mon 12 Jun 2000 02:21:35 PM PDT
 | Install date: Fri 04 Aug 2000 11:40:39 AM PDT      Build Host: utility.wgcr.org
 | Group       : Applications/Databases        Source RPM: postgresql-7.0.2-2.src.rpm
 | Size        : 7431735                          License: BSD
 | Packager    : Lamar Owen <lamar.owen@wgcr.org>
 | URL         : http://www.postgresql.org/
 | Summary     : PostgreSQL client programs and libraries.
 | 
 | 02/17/2000  SC Hulegaard  Created. 
 + -------------------------------------------------------------------  */

CREATE TABLE test_num_literals (
foo INT4,
bigfoo INT8
);

/* try what works */
insert into test_num_literals (foo) values ( X'04040404');

/* get close to limit - this works too */
insert into test_num_literals (foo) values ( X'040404040');

/* demonstrate that it works for int8 type attributes too */
insert into test_num_literals (bigfoo) values ( X'040404040');

/* step beyond the 32 bit limit - this does *NOT* work - FAILS! */
insert into test_num_literals (bigfoo) values ( X'0404040404');

/* try to establish an int8 bit pattern - FAILS! */
insert into test_num_literals (bigfoo) values ( X'0404040404040404');

/* review what did work */
select * from test_num_literals;

DROP TABLE test_num_literals ;

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