#30315 [Opn]: big integers don't overflow
ID: 30315 Updated by: [EMAIL PROTECTED] Reported By: tokul at users dot sourceforge dot net Status: Open Bug Type: Variables related Operating System: Linux PHP Version: 5.0.2 New Comment: PHP never guaranteed that integers larger than 2^31 wrap negative. It has never been true on a 64-bit platform, for example; there, your code will have always printed 3725722773. I don't think this is a PHP bug. Previous Comments: [2004-10-04 10:03:43] [EMAIL PROTECTED] You didn't mention that before ;-) So no, then this is ofcourse a bug. [2004-10-04 08:58:11] tokul at users dot sourceforge dot net Have you checked php behaviour in other php versions? I have also tested 4.1.2, 4.3.9 and 5.0.1. This happens only on 5.0.2. I just need to know, if this is a bug or default behaviour in future php versions. [2004-10-04 08:39:49] [EMAIL PROTECTED] Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Thank you for your interest in PHP. . [2004-10-03 21:35:01] tokul at users dot sourceforge dot net Description: If big number (2500072158) is converted to integer, php 5.0.2 does not overflow and uses max integer value (2147483647). OS details: Linux Debian Sarge PHP compilation details (vanilla php-5.0.2.tar.bz2): ./configure --disable-debug --with-apxs=/somepath/apache/bin/apxs --prefix=/somepath/php --with-config-file-path=/somepath/ --with-pcre-regex --enable-mbstring --enable-session --disable-all --with-gettext=shared,/usr php.ini details: error_reporting=E_ALL display_errors=on register_globals=off asp_tags=on short_tags=off Is this standard future php behaviour or just some error in my config? Reproduce code: --- echo (int)0xde120495; Expected result: -569244523 Actual result: -- 2147483647 -- Edit this bug report at http://bugs.php.net/?id=30315edit=1
#30315 [Opn]: big integers don't overflow
ID: 30315 Updated by: [EMAIL PROTECTED] Reported By: tokul at users dot sourceforge dot net Status: Open Bug Type: Variables related Operating System: Linux PHP Version: 5.0.2 New Comment: But it's still breaking backward compatibility, and that is also important. IMO this should just work like it did before. Previous Comments: [2004-10-05 14:43:30] [EMAIL PROTECTED] PHP never guaranteed that integers larger than 2^31 wrap negative. It has never been true on a 64-bit platform, for example; there, your code will have always printed 3725722773. I don't think this is a PHP bug. [2004-10-04 10:03:43] [EMAIL PROTECTED] You didn't mention that before ;-) So no, then this is ofcourse a bug. [2004-10-04 08:58:11] tokul at users dot sourceforge dot net Have you checked php behaviour in other php versions? I have also tested 4.1.2, 4.3.9 and 5.0.1. This happens only on 5.0.2. I just need to know, if this is a bug or default behaviour in future php versions. [2004-10-04 08:39:49] [EMAIL PROTECTED] Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Thank you for your interest in PHP. . [2004-10-03 21:35:01] tokul at users dot sourceforge dot net Description: If big number (2500072158) is converted to integer, php 5.0.2 does not overflow and uses max integer value (2147483647). OS details: Linux Debian Sarge PHP compilation details (vanilla php-5.0.2.tar.bz2): ./configure --disable-debug --with-apxs=/somepath/apache/bin/apxs --prefix=/somepath/php --with-config-file-path=/somepath/ --with-pcre-regex --enable-mbstring --enable-session --disable-all --with-gettext=shared,/usr php.ini details: error_reporting=E_ALL display_errors=on register_globals=off asp_tags=on short_tags=off Is this standard future php behaviour or just some error in my config? Reproduce code: --- echo (int)0xde120495; Expected result: -569244523 Actual result: -- 2147483647 -- Edit this bug report at http://bugs.php.net/?id=30315edit=1
#30315 [Opn]: big integers don't overflow
ID: 30315 Updated by: [EMAIL PROTECTED] Reported By: tokul at users dot sourceforge dot net Status: Open Bug Type: Variables related Operating System: Linux PHP Version: 5.0.2 New Comment: I would argue that backwards compatibility is about making guarantees and not breaking them. It's not about simply ensuring that all behaviour remains exactly the same forever, otherwise you can't change anything at all. But no guarantee was broken in this change. Previous Comments: [2004-10-05 14:48:28] [EMAIL PROTECTED] But it's still breaking backward compatibility, and that is also important. IMO this should just work like it did before. [2004-10-05 14:43:30] [EMAIL PROTECTED] PHP never guaranteed that integers larger than 2^31 wrap negative. It has never been true on a 64-bit platform, for example; there, your code will have always printed 3725722773. I don't think this is a PHP bug. [2004-10-04 10:03:43] [EMAIL PROTECTED] You didn't mention that before ;-) So no, then this is ofcourse a bug. [2004-10-04 08:58:11] tokul at users dot sourceforge dot net Have you checked php behaviour in other php versions? I have also tested 4.1.2, 4.3.9 and 5.0.1. This happens only on 5.0.2. I just need to know, if this is a bug or default behaviour in future php versions. [2004-10-04 08:39:49] [EMAIL PROTECTED] Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Thank you for your interest in PHP. . The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/30315 -- Edit this bug report at http://bugs.php.net/?id=30315edit=1
