From: sixd
Operating system: Linux
PHP version: 5.5Git-2013-04-29 (Git)
Package: GD related
Bug Type: Bug
Bug description:Incorrect calculation in gdColorMatch
Description:
------------
Compilations warnings in gd_crop.c flag a potential calculation issue in
gdColorMatch:
/home/cjones/php-5.5/ext/gd/libgd/gd_crop.c:340: warning: suggest
parentheses around arithmetic in operand of ^
/home/cjones/php-5.5/ext/gd/libgd/gd_crop.c:340: warning: suggest
parentheses around arithmetic in operand of ^
The code at line 340 is:
const double dist_perc = sqrt(dist / (255^2 + 255^2 + 255^2));
The denominator is currently evaluated as 253. Was it instead intended be
(3 * (255 * 255)) == 195075 ?
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Edit bug report at https://bugs.php.net/bug.php?id=64736&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=64736&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=64736&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=64736&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=64736&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=64736&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=64736&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=64736&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=64736&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=64736&r=support
Expected behavior: https://bugs.php.net/fix.php?id=64736&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=64736&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=64736&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=64736&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64736&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=64736&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=64736&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=64736&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=64736&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=64736&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=64736&r=mysqlcfg
