Bug #79763 [NEW]: imagefilledarc fails with odd arc sizes

From: greg at subaqua dot co dot uk Operating system: Ubuntu 18.04 PHP version: 7.2.31 Package: GD related Bug Type: Bug Bug description:imagefilledarc fails with odd arc sizes Description: ------------ When the arc size is specified as an ODD number of pixels, the arc angles are calculated incorrectly. When specified as an EVEN number of pixels, it works OK. See https://imgur.com/a/QCdscXj The problem seems to be a combination of PHP version and GD version. Fails: Ubuntu 18.04 PHP:7.2.24-0ubuntu0.18.04.6 GD: 2.2.5 Works: Redhat 7 PHP: 7.1.33 GD: 2.3 Test script: --------------- <?php $image_size = 400; $arc_size = $_GET['r'] ?? 275; $image = imagecreate($image_size, $image_size); $c1 = imagecolorallocate($image, 255, 255, 255); $c2 = imagecolorallocate($image, 0, 255, 0); $c3 = imagecolorallocate($image, 0, 0, 255); imagefilledrectangle($image, 0, 0, $image_size, $image_size, $c1); imagefilledarc($image, $image_size/2, $image_size/2, $arc_size, $arc_size, 135, 270, $c3, IMG_ARC_PIE); imagefilledarc($image, $image_size/2, $image_size/2, $arc_size, $arc_size, 270, 405, $c2, IMG_ARC_PIE); header('Content-type: image/png'); imagepng($image); imagedestroy($image); -- Edit bug report at https://bugs.php.net/bug.php?id=79763&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79763&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79763&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79763&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79763&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79763&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79763&r=support Expected behavior: https://bugs.php.net/fix.php?id=79763&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79763&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79763&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79763&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79763&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79763&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79763&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79763&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79763&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79763&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79763&r=mysqlcfg