Edit report at https://bugs.php.net/bug.php?id=47842&edit=1
ID: 47842
Comment by: iam4webwork at hotmail dot com
Reported by: signe at cothlamadh dot net
Summary: sscanf() does not support 64-bit values
Status: Closed
Type: Bug
Package: Strings related
Operating System: * (64bit)
PHP Version: 5.2.9
Assigned To: mike
Block user comment: N
Private report: N
New Comment:
Yes, but the issue mentioned with printf still remains open, ie:
printf("printf 64-bit signed int '18446744073709551615' (2^64)-1 = %u\n",
18446744073709551615);
see http://3v4l.org/ZeAYt
Previous Comments:
------------------------------------------------------------------------
[2010-05-19 13:28:32] [email protected]
This bug has been fixed in SVN.
Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
Thank you for the report, and for helping us make PHP better.
------------------------------------------------------------------------
[2010-05-19 13:28:12] [email protected]
Automatic comment from SVN on behalf of mike
Revision: http://svn.php.net/viewvc/?view=revision&revision=299484
Log: * fixed bug #47842 sscanf() does not support 64-bit values
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[2009-03-30 22:09:53] signe at cothlamadh dot net
Note: sscanf %x and %X have the same behavior as %d and %u
------------------------------------------------------------------------
[2009-03-30 21:26:23] signe at cothlamadh dot net
Description:
------------
On 64-bit operating systems, printf()'s %d and %u formatting codes support
64-bit integers. sscanf, which supposedly uses the same code (and has the
same expected behavior) does not support 64-bit values.
Also, printf is not outputting accurate values when it reaches numbers near the
upper bounds of a 64-bit int.
Reproduce code:
---------------
<?php
sscanf("2147483647", '%d', $int);
echo "sscanf 32-bit signed int '2147483647' (2^31)-1 = ",$int,"\n";
sscanf("4294967295", '%u', $int);
echo "sscanf 32-bit unsign int '4294967295' (2^32)-1 = ",$int,"\n";
sscanf("9223372036854775807", '%d', $int);
echo "sscanf 64-bit signed int '9223372036854775807' (2^63)-1 = ",$int,"\n";
sscanf("18446744073709551615", '%u', $int);
echo "sscanf 64-bit unsign int '18446744073709551615' (2^64)-1 = ",$int,"\n";
printf("printf 64-bit signed int '9223372036854775807' (2^63)-1 = %d\n",
9223372036854775807);
printf("printf 64-bit signed int '18446744073709551615' (2^64)-1 = %u\n",
18446744073709551615);
echo "\n(2^64)-1 - 100,000,000\n";
printf("printf 64-bit signed int '18446744073609551615' = %u\n",
18446744073609551615);
echo "Output is 257 greater than input\n";
?>
Expected result:
----------------
sscanf 32-bit signed int '2147483647' (2^31)-1 = 2147483647
sscanf 32-bit unsign int '4294967295' (2^32)-1 = 4294967295
sscanf 64-bit signed int '9223372036854775807' (2^63)-1 = 9223372036854775807
sscanf 64-bit unsign int '18446744073709551615' (2^64)-1 = 18446744073709551615
printf 64-bit signed int '9223372036854775807' (2^63)-1 = 9223372036854775807
printf 64-bit signed int '18446744073709551615' (2^64)-1 = 18446744073709551615
Actual result:
--------------
sscanf 32-bit signed int '2147483647' (2^31)-1 = 2147483647
sscanf 32-bit unsign int '4294967295' (2^32)-1 = 4294967295
sscanf 64-bit signed int '9223372036854775807' (2^63)-1 = -1
sscanf 64-bit unsign int '18446744073709551615' (2^64)-1 = 4294967295
printf 64-bit signed int '9223372036854775807' (2^63)-1 = 9223372036854775807
printf 64-bit signed int '18446744073709551615' (2^64)-1 = 0
printf 64-bit signed int '18446744073609551615' ((2^64)-1 - 100000000) =
18446744073609551872
Output is 257 greater than input
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Edit this bug report at https://bugs.php.net/bug.php?id=47842&edit=1
