Bug #79763 [Opn->Nab]: imagefilledarc fails with odd arc sizes

Edit report at https://bugs.php.net/bug.php?id=79763&edit=1 ID: 79763 Updated by: cmb@php.net Reported by: greg at subaqua dot co dot uk Summary: imagefilledarc fails with odd arc sizes -Status: Open +Status: Not a bug Type: Bug Package: GD related Operating System: Ubuntu 18.04 PHP Version: 7.2.31 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: With regard to PHP this is a duplicate of bug #73614. With regard to libgd this is a duplicate of <https://github.com/libgd/libgd/issues/351> which is fixed as of libgd 2.3.0. Previous Comments: ------------------------------------------------------------------------ [2020-07-01 10:23:40] greg at subaqua dot co dot uk 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 this bug report at https://bugs.php.net/bug.php?id=79763&edit=1