#47805 [NEW]: integer overflows it is converted to double but it is not done in vice versa.

From:             vivekanandan8 at yahoo dot com
Operating system: Debian
PHP version:      5.2CVS-2009-03-27 (snap)
PHP Bug Type:     Scripting Engine problem
Bug description:  integer overflows it is converted to double but it is not done in vice versa.

Description:
------------
when the integer overflows it is converted to double but it is not done in
vice versa.
Hence i fell:
it is not done from double to long.
Hence in the function increment_function(zend_operators.c)
we have to add the validation as follows 
case IS_DOUBLE:  
 if(op1->value.dval == LONG_MIN) {   
  op1->value.lval = (long) op1->value.dval+1;
  op1->type = IS_LONG; 
 }else{
   op1->value.dval = op1->value.dval + 1;
}

Reproduce code:
---------------
<?

$vValue = -2147483647;
var_dump($vValue); //output: int(-2147483647) 
$vValue--;
var_dump($vValue); //output: float(-2147483648) 
$vValue--;
var_dump($vValue); //output: float(-2147483649) 
$vValue++;
var_dump($vValue);//output: float(-2147483648) 
$vValue++;
var_dump($vValue);//output: float(-2147483647)
?>

Expected result:
----------------
int(-2147483647) int(-2147483648) float(-2147483649) int(-2147483648)
int(-2147483647)

Actual result:
--------------
int(-2147483647) int(-2147483648) float(-2147483649) float(-2147483648)
float(-2147483647)

-- 
Edit bug report at http://bugs.php.net/?id=47805&edit=1
-- 
Try a CVS snapshot (PHP 5.2):        http://bugs.php.net/fix.php?id=47805&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):        http://bugs.php.net/fix.php?id=47805&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):        http://bugs.php.net/fix.php?id=47805&r=trysnapshot60
Fixed in CVS:                        http://bugs.php.net/fix.php?id=47805&r=fixedcvs
Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=47805&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=47805&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=47805&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=47805&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=47805&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=47805&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=47805&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=47805&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=47805&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=47805&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=47805&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=47805&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=47805&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=47805&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=47805&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=47805&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=47805&r=mysqlcfg