Req #54249 [NEW]: extra CPU operation on each usage or E_* error types

From: Date: Mon, 14 Mar 2011 17:03:24 +0000
Subject: Req #54249 [NEW]: extra CPU operation on each usage or E_* error types
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-159464@lists.php.net to get a copy of this message
From: Operating system: ALL PHP version: 5.3.5 Package: Performance problem Bug Type: Feature/Change Request Bug description:extra CPU operation on each usage or E_* error types Description: ------------ the way the errors are defined in zend_errors.h file makes an extra unneeded cpu shift (multiplication?) operation each time the error constant is used. clue: this is is from zend_errors.h: #define E_ERROR (1<<0L) if you printf( "%d" , E_ERROR ) the pre-processor will replace this line with printf( "%d" , 1<<0L ) which will cause an uncalled for shit operation Test script: --------------- /* this script will cause a php E_NOTICE to be used, notice the (minor) diff in execution time when error definitions are changed */ error_reporting( E_ALL ); for( $i=0 ; $i<10000000; $i++ ) { echo $x['a']; } Expected result: ---------------- no change to the output is a must -- Edit bug report at http://bugs.php.net/bug.php?id=54249&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=54249&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=54249&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=54249&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=54249&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=54249&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=54249&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=54249&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=54249&r=needscript Try newer version: http://bugs.php.net/fix.php?id=54249&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=54249&r=support Expected behavior: http://bugs.php.net/fix.php?id=54249&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=54249&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=54249&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=54249&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=54249&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=54249&r=dst IIS Stability: http://bugs.php.net/fix.php?id=54249&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=54249&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=54249&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=54249&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=54249&r=mysqlcfg

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