Edit report at http://bugs.php.net/bug.php?id=47842&edit=1
ID: 47842 Updated by: m...@php.net Reported by: signe at cothlamadh dot net Summary: sscanf() does not support 64-bit values -Status: Open +Status: Closed Type: Bug Package: Strings related Operating System: * (64bit) PHP Version: 5.2.9 -Assigned To: +Assigned To: mike New Comment: 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. Previous Comments: ------------------------------------------------------------------------ [2010-05-19 13:28:12] m...@php.net 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 ------------------------------------------------------------------------ [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 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=47842&edit=1
