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Fix incorrect addition, subtraction, and overflow checking in new

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inet operators.
REL8_2_STABLE
Tom Lane 20 years ago
parent 77bb65d3fc
commit fbb1daed93
4 changed files with 374 additions and 263 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 107
      src/backend/utils/adt/network.c
  2. 24
      src/include/catalog/pg_proc.h
  3. 313
      src/test/regress/expected/inet.out
  4. 31
      src/test/regress/sql/inet.sql

107
src/backend/utils/adt/network.c
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@ -1,7 +1,7 @@
/*
* PostgreSQL type definitions for the INET and CIDR types.
*
* $PostgreSQL: pgsql/src/backend/utils/adt/network.c,v 1.64 2006/02/11 03:32:39 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/network.c,v 1.65 2006/02/11 20:39:58 tgl Exp $
*
* Jon Postel RIP 16 Oct 1998
*/
@ -27,7 +27,7 @@ static int32 network_cmp_internal(inet *a1, inet *a2);
static int bitncmp(void *l, void *r, int n);
static bool addressOK(unsigned char *a, int bits, int family);
static int ip_addrsize(inet *inetptr);
static Datum internal_inetpl(inet *ip, int64 iarg);
static inet *internal_inetpl(inet *ip, int64 addend);
/*
* Access macros.
@ -1292,8 +1292,7 @@ inetand(PG_FUNCTION_ARGS)
if (ip_family(ip) != ip_family(ip2))
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("mismatch in address family (%d) != (%d)",
ip_family(ip), ip_family(ip2))));
errmsg("cannot AND inet values of different sizes")));
else
{
int nb = ip_addrsize(ip);
@ -1327,8 +1326,7 @@ inetor(PG_FUNCTION_ARGS)
if (ip_family(ip) != ip_family(ip2))
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("mismatch in address family (%d) != (%d)",
ip_family(ip), ip_family(ip2))));
errmsg("cannot OR inet values of different sizes")));
else
{
int nb = ip_addrsize(ip);
@ -1350,8 +1348,8 @@ inetor(PG_FUNCTION_ARGS)
}
static Datum
internal_inetpl(inet *ip, int64 plus)
static inet *
internal_inetpl(inet *ip, int64 addend)
{
inet *dst;
@ -1365,15 +1363,31 @@ internal_inetpl(inet *ip, int64 plus)
while (nb-- > 0)
{
pdst[nb] = carry = pip[nb] + plus + carry;
plus /= 0x100; /* process next byte */
carry /= 0x100; /* remove low byte */
/* Overflow on high byte? */
if (nb == 0 && (plus != 0 || carry != 0))
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("result out of range")));
carry = pip[nb] + (int) (addend & 0xFF) + carry;
pdst[nb] = (unsigned char) (carry & 0xFF);
carry >>= 8;
/*
* We have to be careful about right-shifting addend because
* right-shift isn't portable for negative values, while
* simply dividing by 256 doesn't work (the standard rounding
* is in the wrong direction, besides which there may be machines
* out there that round the wrong way). So, explicitly clear
* the low-order byte to remove any doubt about the correct
* result of the division, and then divide rather than shift.
*/
addend &= ~((int64) 0xFF);
addend /= 0x100;
}
/*
* At this point we should have addend and carry both zero if
* original addend was >= 0, or addend -1 and carry 1 if original
* addend was < 0. Anything else means overflow.
*/
if (!((addend == 0 && carry == 0) ||
(addend == -1 && carry == 1)))
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("result out of range")));
}
ip_bits(dst) = ip_bits(ip);
@ -1382,7 +1396,7 @@ internal_inetpl(inet *ip, int64 plus)
((char *) ip_addr(dst) - (char *) VARDATA(dst)) +
ip_addrsize(dst);
PG_RETURN_INET_P(dst);
return dst;
}
@ -1390,9 +1404,9 @@ Datum
inetpl(PG_FUNCTION_ARGS)
{
inet *ip = PG_GETARG_INET_P(0);
int64 plus = PG_GETARG_INT64(1);
int64 addend = PG_GETARG_INT64(1);
return internal_inetpl(ip, plus);
PG_RETURN_INET_P(internal_inetpl(ip, addend));
}
@ -1400,9 +1414,9 @@ Datum
inetmi_int8(PG_FUNCTION_ARGS)
{
inet *ip = PG_GETARG_INET_P(0);
int64 plus = PG_GETARG_INT64(1);
int64 addend = PG_GETARG_INT64(1);
return internal_inetpl(ip, -plus);
PG_RETURN_INET_P(internal_inetpl(ip, -addend));
}
@ -1416,42 +1430,53 @@ inetmi(PG_FUNCTION_ARGS)
if (ip_family(ip) != ip_family(ip2))
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("mismatch in address family (%d) != (%d)",
ip_family(ip), ip_family(ip2))));
errmsg("cannot subtract inet values of different sizes")));
else
{
/*
* We form the difference using the traditional complement,
* increment, and add rule, with the increment part being handled
* by starting the carry off at 1. If you don't think integer
* arithmetic is done in two's complement, too bad.
*/
int nb = ip_addrsize(ip);
int byte = 0;
unsigned char *pip = ip_addr(ip);
unsigned char *pip2 = ip_addr(ip2);
int carry = 1;
while (nb-- > 0)
{
/*
* Error if overflow on last byte. This test is tricky
* because if the subtraction == 128 and res is negative, or
* if subtraction == -128 and res is positive, the result
* would still fit in int64.
*/
if (byte + 1 == sizeof(int64) &&
(pip[nb] - pip2[nb] >= 128 + (res < 0) ||
pip[nb] - pip2[nb] <= -128 - (res > 0)))
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("result out of range")));
if (byte >= sizeof(int64))
int lobyte;
carry = pip[nb] + (~pip2[nb] & 0xFF) + carry;
lobyte = carry & 0xFF;
if (byte < sizeof(int64))
{
/* Error if bytes beyond int64 length differ. */
if (pip[nb] != pip2[nb])
res |= ((int64) lobyte) << (byte * 8);
}
else
{
/*
* Input wider than int64: check for overflow. All bytes
* to the left of what will fit should be 0 or 0xFF,
* depending on sign of the now-complete result.
*/
if ((res < 0) ? (lobyte != 0xFF) : (lobyte != 0))
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("result out of range")));
}
else
res += (int64)(pip[nb] - pip2[nb]) << (byte * 8);
carry >>= 8;
byte++;
}
/*
* If input is narrower than int64, overflow is not possible, but
* we have to do proper sign extension.
*/
if (carry == 0 && byte < sizeof(int64))
res |= ((int64) -1) << (byte * 8);
}
PG_RETURN_INT64(res);

24
src/include/catalog/pg_proc.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.395 2006/02/11 03:32:39 momjian Exp $
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.396 2006/02/11 20:39:58 tgl Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@ -2297,7 +2297,7 @@ DESCR("bitwise or");
DATA(insert OID = 1675 ( bitxor PGNSP PGUID 12 f f t f i 2 1560 "1560 1560" _null_ _null_ _null_ bitxor - _null_ ));
DESCR("bitwise exclusive or");
DATA(insert OID = 1676 ( bitnot PGNSP PGUID 12 f f t f i 1 1560 "1560" _null_ _null_ _null_ bitnot - _null_ ));
DESCR("bitwise negation");
DESCR("bitwise not");
DATA(insert OID = 1677 ( bitshiftleft PGNSP PGUID 12 f f t f i 2 1560 "1560 23" _null_ _null_ _null_ bitshiftleft - _null_ ));
DESCR("bitwise left shift");
DATA(insert OID = 1678 ( bitshiftright PGNSP PGUID 12 f f t f i 2 1560 "1560 23" _null_ _null_ _null_ bitshiftright - _null_ ));
@ -2423,28 +2423,28 @@ DATA(insert OID = 1715 ( cidr PGNSP PGUID 12 f f t f i 1 650 "869" _null_ _n
DESCR("coerce inet to cidr");
DATA(insert OID = 2196 ( inet_client_addr PGNSP PGUID 12 f f f f s 0 869 "" _null_ _null_ _null_ inet_client_addr - _null_ ));
DESCR("INET address of the client");
DESCR("inet address of the client");
DATA(insert OID = 2197 ( inet_client_port PGNSP PGUID 12 f f f f s 0 23 "" _null_ _null_ _null_ inet_client_port - _null_ ));
DESCR("client's port number for this connection");
DATA(insert OID = 2198 ( inet_server_addr PGNSP PGUID 12 f f f f s 0 869 "" _null_ _null_ _null_ inet_server_addr - _null_ ));
DESCR("INET address of the server");
DESCR("inet address of the server");
DATA(insert OID = 2199 ( inet_server_port PGNSP PGUID 12 f f f f s 0 23 "" _null_ _null_ _null_ inet_server_port - _null_ ));
DESCR("server's port number for this connection");
DATA(insert OID = 2627 ( inetnot PGNSP PGUID 12 f f t f i 1 869 "869" _null_ _null_ _null_ inetnot - _null_ ));
DESCR("binary NOT");
DESCR("bitwise not");
DATA(insert OID = 2628 ( inetand PGNSP PGUID 12 f f t f i 2 869 "869 869" _null_ _null_ _null_ inetand - _null_ ));
DESCR("binary AND");
DESCR("bitwise and");
DATA(insert OID = 2629 ( inetor PGNSP PGUID 12 f f t f i 2 869 "869 869" _null_ _null_ _null_ inetor - _null_ ));
DESCR("binary OR");
DESCR("bitwise or");
DATA(insert OID = 2630 ( inetpl PGNSP PGUID 12 f f t f i 2 869 "869 20" _null_ _null_ _null_ inetpl - _null_ ));
DESCR("add integer to INET value");
DATA(insert OID = 2631 ( int8pl_inet PGNSP PGUID 14 f f t f i 2 869 "20 869" _null_ _null_ _null_ "select $2 + $1" - _null_ ));
DESCR("add integer to INET value");
DESCR("add integer to inet value");
DATA(insert OID = 2631 ( int8pl_inet PGNSP PGUID 14 f f t f i 2 869 "20 869" _null_ _null_ _null_ "select $2 + $1" - _null_ ));
DESCR("add integer to inet value");
DATA(insert OID = 2632 ( inetmi_int8 PGNSP PGUID 12 f f t f i 2 869 "869 20" _null_ _null_ _null_ inetmi_int8 - _null_ ));
DESCR("subtract integer from INET value");
DESCR("subtract integer from inet value");
DATA(insert OID = 2633 ( inetmi PGNSP PGUID 12 f f t f i 2 20 "869 869" _null_ _null_ _null_ inetmi - _null_ ));
DESCR("subtract INET values");
DESCR("subtract inet values");
DATA(insert OID = 1686 ( numeric PGNSP PGUID 12 f f t f i 1 1700 "25" _null_ _null_ _null_ text_numeric - _null_ ));
DESCR("(internal)");

313
src/test/regress/expected/inet.out
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@ -240,137 +240,208 @@ SELECT * FROM inet_tbl WHERE i<<='192.168.1.0/24'::cidr;
192.168.1.0/26 | 192.168.1.226
(6 rows)
SELECT ~i FROM inet_tbl;
?column?
--------------------------------------------
63.87.254.29/24
63.87.254.29
63.87.254.255/24
63.87.254.255/25
63.87.254.0/24
63.87.254.0/25
245.254.253.252/8
245.254.253.252/8
245.254.253.252
245.254.253.252/24
245.254.253.252/16
245.254.253.252/8
244.254.253.252/8
246.254.253.252/8
ffef:ffdc:ffff:ffff:ffff:ffff:ffff:ff0e/64
ffef:ffdc:ffff:ffff:ffff:ffff:ffff:0
ffff:ffff:ffff:ffff:ffff:ffff:fbfc:fdfe/24
SET enable_seqscan TO on;
DROP INDEX inet_idx1;
-- simple tests of inet boolean and arithmetic operators
SELECT i, ~i AS "~i" FROM inet_tbl;
i | ~i
------------------+--------------------------------------------
192.168.1.226/24 | 63.87.254.29/24
192.168.1.226 | 63.87.254.29
192.168.1.0/24 | 63.87.254.255/24
192.168.1.0/25 | 63.87.254.255/25
192.168.1.255/24 | 63.87.254.0/24
192.168.1.255/25 | 63.87.254.0/25
10.1.2.3/8 | 245.254.253.252/8
10.1.2.3/8 | 245.254.253.252/8
10.1.2.3 | 245.254.253.252
10.1.2.3/24 | 245.254.253.252/24
10.1.2.3/16 | 245.254.253.252/16
10.1.2.3/8 | 245.254.253.252/8
11.1.2.3/8 | 244.254.253.252/8
9.1.2.3/8 | 246.254.253.252/8
10:23::f1/64 | ffef:ffdc:ffff:ffff:ffff:ffff:ffff:ff0e/64
10:23::ffff | ffef:ffdc:ffff:ffff:ffff:ffff:ffff:0
::4.3.2.1/24 | ffff:ffff:ffff:ffff:ffff:ffff:fbfc:fdfe/24
(17 rows)
SELECT i & c FROM inet_tbl;
?column?
----------------
192.168.1.0/24
192.168.1.0
192.168.1.0/24
192.168.1.0/25
192.168.1.0/24
192.168.1.0/25
10.0.0.0/8
10.0.0.0
10.1.2.3
10.1.2.0/24
10.1.0.0/16
10.0.0.0/8
10.0.0.0/8
8.0.0.0/8
10:23::f1
10:23::8000
::0.2.2.0
SELECT i, c, i & c AS "and" FROM inet_tbl;
i | c | and
------------------+--------------------+----------------
192.168.1.226/24 | 192.168.1.0/24 | 192.168.1.0/24
192.168.1.226 | 192.168.1.0/26 | 192.168.1.0
192.168.1.0/24 | 192.168.1.0/24 | 192.168.1.0/24
192.168.1.0/25 | 192.168.1.0/24 | 192.168.1.0/25
192.168.1.255/24 | 192.168.1.0/24 | 192.168.1.0/24
192.168.1.255/25 | 192.168.1.0/24 | 192.168.1.0/25
10.1.2.3/8 | 10.0.0.0/8 | 10.0.0.0/8
10.1.2.3/8 | 10.0.0.0/32 | 10.0.0.0
10.1.2.3 | 10.1.2.3/32 | 10.1.2.3
10.1.2.3/24 | 10.1.2.0/24 | 10.1.2.0/24
10.1.2.3/16 | 10.1.0.0/16 | 10.1.0.0/16
10.1.2.3/8 | 10.0.0.0/8 | 10.0.0.0/8
11.1.2.3/8 | 10.0.0.0/8 | 10.0.0.0/8
9.1.2.3/8 | 10.0.0.0/8 | 8.0.0.0/8
10:23::f1/64 | 10:23::f1/128 | 10:23::f1
10:23::ffff | 10:23::8000/113 | 10:23::8000
::4.3.2.1/24 | ::ffff:1.2.3.4/128 | ::0.2.2.0
(17 rows)
SELECT i | c FROM inet_tbl;
?column?
------------------
192.168.1.226/24
192.168.1.226
192.168.1.0/24
192.168.1.0/25
192.168.1.255/24
192.168.1.255/25
10.1.2.3/8
10.1.2.3
10.1.2.3
10.1.2.3/24
10.1.2.3/16
10.1.2.3/8
11.1.2.3/8
11.1.2.3/8
10:23::f1
10:23::ffff
::ffff:5.3.3.5
SELECT i, c, i | c AS "or" FROM inet_tbl;
i | c | or
------------------+--------------------+------------------
192.168.1.226/24 | 192.168.1.0/24 | 192.168.1.226/24
192.168.1.226 | 192.168.1.0/26 | 192.168.1.226
192.168.1.0/24 | 192.168.1.0/24 | 192.168.1.0/24
192.168.1.0/25 | 192.168.1.0/24 | 192.168.1.0/25
192.168.1.255/24 | 192.168.1.0/24 | 192.168.1.255/24
192.168.1.255/25 | 192.168.1.0/24 | 192.168.1.255/25
10.1.2.3/8 | 10.0.0.0/8 | 10.1.2.3/8
10.1.2.3/8 | 10.0.0.0/32 | 10.1.2.3
10.1.2.3 | 10.1.2.3/32 | 10.1.2.3
10.1.2.3/24 | 10.1.2.0/24 | 10.1.2.3/24
10.1.2.3/16 | 10.1.0.0/16 | 10.1.2.3/16
10.1.2.3/8 | 10.0.0.0/8 | 10.1.2.3/8
11.1.2.3/8 | 10.0.0.0/8 | 11.1.2.3/8
9.1.2.3/8 | 10.0.0.0/8 | 11.1.2.3/8
10:23::f1/64 | 10:23::f1/128 | 10:23::f1
10:23::ffff | 10:23::8000/113 | 10:23::ffff
::4.3.2.1/24 | ::ffff:1.2.3.4/128 | ::ffff:5.3.3.5
(17 rows)
SELECT i + 500 FROM inet_tbl;
?column?
------------------
192.168.4.214/24
192.168.4.214
192.168.3.244/24
192.168.3.244/25
192.168.4.243/24
192.168.4.243/25
10.1.4.247/8
10.1.4.247/8
10.1.4.247
10.1.4.247/24
10.1.4.247/16
10.1.4.247/8
11.1.4.247/8
9.1.4.247/8
10:23::3e5/64
10:23::1:2f3
::4.3.4.245/24
SELECT i, i + 500 AS "i+500" FROM inet_tbl;
i | i+500
------------------+------------------
192.168.1.226/24 | 192.168.3.214/24
192.168.1.226 | 192.168.3.214
192.168.1.0/24 | 192.168.2.244/24
192.168.1.0/25 | 192.168.2.244/25
192.168.1.255/24 | 192.168.3.243/24
192.168.1.255/25 | 192.168.3.243/25
10.1.2.3/8 | 10.1.3.247/8
10.1.2.3/8 | 10.1.3.247/8
10.1.2.3 | 10.1.3.247
10.1.2.3/24 | 10.1.3.247/24
10.1.2.3/16 | 10.1.3.247/16
10.1.2.3/8 | 10.1.3.247/8
11.1.2.3/8 | 11.1.3.247/8
9.1.2.3/8 | 9.1.3.247/8
10:23::f1/64 | 10:23::2e5/64
10:23::ffff | 10:23::1:1f3
::4.3.2.1/24 | ::4.3.3.245/24
(17 rows)
SELECT i, i - 500 AS "i-500" FROM inet_tbl;
i | i-500
------------------+----------------------------------------
192.168.1.226/24 | 192.167.255.238/24
192.168.1.226 | 192.167.255.238
192.168.1.0/24 | 192.167.255.12/24
192.168.1.0/25 | 192.167.255.12/25
192.168.1.255/24 | 192.168.0.11/24
192.168.1.255/25 | 192.168.0.11/25
10.1.2.3/8 | 10.1.0.15/8
10.1.2.3/8 | 10.1.0.15/8
10.1.2.3 | 10.1.0.15
10.1.2.3/24 | 10.1.0.15/24
10.1.2.3/16 | 10.1.0.15/16
10.1.2.3/8 | 10.1.0.15/8
11.1.2.3/8 | 11.1.0.15/8
9.1.2.3/8 | 9.1.0.15/8
10:23::f1/64 | 10:22:ffff:ffff:ffff:ffff:ffff:fefd/64
10:23::ffff | 10:23::fe0b
::4.3.2.1/24 | ::4.3.0.13/24
(17 rows)
SELECT i - 500 FROM inet_tbl;
?column?
--------------------
192.168.255.238/24
192.168.255.238
192.168.255.12/24
192.168.255.12/25
192.168.0.11/24
192.168.0.11/25
10.1.0.15/8
10.1.0.15/8
10.1.0.15
10.1.0.15/24
10.1.0.15/16
10.1.0.15/8
11.1.0.15/8
9.1.0.15/8
10:23::fefd/64
10:23::fe0b
::4.3.0.13/24
SELECT i, c, i - c AS "minus" FROM inet_tbl;
i | c | minus
------------------+--------------------+------------------
192.168.1.226/24 | 192.168.1.0/24 | 226
192.168.1.226 | 192.168.1.0/26 | 226
192.168.1.0/24 | 192.168.1.0/24 | 0
192.168.1.0/25 | 192.168.1.0/24 | 0
192.168.1.255/24 | 192.168.1.0/24 | 255
192.168.1.255/25 | 192.168.1.0/24 | 255
10.1.2.3/8 | 10.0.0.0/8 | 66051
10.1.2.3/8 | 10.0.0.0/32 | 66051
10.1.2.3 | 10.1.2.3/32 | 0
10.1.2.3/24 | 10.1.2.0/24 | 3
10.1.2.3/16 | 10.1.0.0/16 | 515
10.1.2.3/8 | 10.0.0.0/8 | 66051
11.1.2.3/8 | 10.0.0.0/8 | 16843267
9.1.2.3/8 | 10.0.0.0/8 | -16711165
10:23::f1/64 | 10:23::f1/128 | 0
10:23::ffff | 10:23::8000/113 | 32767
::4.3.2.1/24 | ::ffff:1.2.3.4/128 | -281470631346435
(17 rows)
SELECT i - c FROM inet_tbl;
SELECT '127.0.0.1'::inet + 257;
?column?
-----------
127.0.1.2
(1 row)
SELECT ('127.0.0.1'::inet + 257) - 257;
?column?
-----------
127.0.0.1
(1 row)
SELECT '127::1'::inet + 257;
?column?
----------
127::102
(1 row)
SELECT ('127::1'::inet + 257) - 257;
?column?
----------
127::1
(1 row)
SELECT '127.0.0.2'::inet - ('127.0.0.2'::inet + 500);
?column?
----------
-500
(1 row)
SELECT '127.0.0.2'::inet - ('127.0.0.2'::inet - 500);
?column?
----------
500
(1 row)
SELECT '127::2'::inet - ('127::2'::inet + 500);
?column?
----------
-500
(1 row)
SELECT '127::2'::inet - ('127::2'::inet - 500);
?column?
----------
500
(1 row)
-- these should give overflow errors:
SELECT '127.0.0.1'::inet + 10000000000;
ERROR: result out of range
SELECT '127.0.0.1'::inet - 10000000000;
ERROR: result out of range
SELECT '126::1'::inet - '127::2'::inet;
ERROR: result out of range
SELECT '127::1'::inet - '126::2'::inet;
ERROR: result out of range
-- but not these
SELECT '127::1'::inet + 10000000000;
?column?
------------------
226
226
0
0
255
255
66051
66051
0
3
515
66051
16843267
-16711165
0
32767
-281470631346435
(17 rows)
127::2:540b:e401
(1 row)
SELECT '127::1'::inet - '127::2'::inet;
?column?
----------
-1
(1 row)
SET enable_seqscan TO on;
DROP INDEX inet_idx1;

31
src/test/regress/sql/inet.sql
Unescape View File

@ -62,14 +62,29 @@ CREATE INDEX inet_idx1 ON inet_tbl(i);
SET enable_seqscan TO off;
SELECT * FROM inet_tbl WHERE i<<'192.168.1.0/24'::cidr;
SELECT * FROM inet_tbl WHERE i<<='192.168.1.0/24'::cidr;
SELECT ~i FROM inet_tbl;
SELECT i & c FROM inet_tbl;
SELECT i | c FROM inet_tbl;
SELECT i + 500 FROM inet_tbl;
SELECT i - 500 FROM inet_tbl;
SELECT i - c FROM inet_tbl;
SET enable_seqscan TO on;
DROP INDEX inet_idx1;
-- simple tests of inet boolean and arithmetic operators
SELECT i, ~i AS "~i" FROM inet_tbl;
SELECT i, c, i & c AS "and" FROM inet_tbl;
SELECT i, c, i | c AS "or" FROM inet_tbl;
SELECT i, i + 500 AS "i+500" FROM inet_tbl;
SELECT i, i - 500 AS "i-500" FROM inet_tbl;
SELECT i, c, i - c AS "minus" FROM inet_tbl;
SELECT '127.0.0.1'::inet + 257;
SELECT ('127.0.0.1'::inet + 257) - 257;
SELECT '127::1'::inet + 257;
SELECT ('127::1'::inet + 257) - 257;
SELECT '127.0.0.2'::inet - ('127.0.0.2'::inet + 500);
SELECT '127.0.0.2'::inet - ('127.0.0.2'::inet - 500);
SELECT '127::2'::inet - ('127::2'::inet + 500);
SELECT '127::2'::inet - ('127::2'::inet - 500);
-- these should give overflow errors:
SELECT '127.0.0.1'::inet + 10000000000;
SELECT '127.0.0.1'::inet - 10000000000;
SELECT '126::1'::inet - '127::2'::inet;
SELECT '127::1'::inet - '126::2'::inet;
-- but not these
SELECT '127::1'::inet + 10000000000;
SELECT '127::1'::inet - '127::2'::inet;

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