#34640 [Bgs]: libpng warnings and crash when reading corrupt PNG file.

ID: 34640 User updated by: richard dot quadling at bandvulc dot co dot uk Reported By: richard dot quadling at bandvulc dot co dot uk Status: Bogus Bug Type: GD related Operating System: Windows 2003 & XP SP2 PHP Version: 5.0.5 New Comment: Ah. No. I DO get an error now though! Fatal error: imagecreatefrompng(): gd-png: fatal libpng error: IDAT: CRC error in C:\png2pdf\bad.php on line 11 I downloaded the PNG to C:\bad.png and edited the script to ... <?php function convertPNG_PDF($sImageLocation) { // Define an array of image resources. $aImages= array(); // Get fax dimensions. $aImageData = getimagesize($sImageLocation); // Get the image. $aImages['Original'] = imagecreatefrompng($sImageLocation); echo "We got here\n"; } $sTestPDF = convertPNG_PDF('C:/bad.png'); echo "We got to here\n"; ?> Using the C:\PHP5\PHP.EXE c:\png2pdf\bad.php produces the same ... libpng warning: Ignoring bad adaptive filter type libpng warning: Ignoring bad adaptive filter type ... repeated MANY times ... libpng warning: Ignoring bad adaptive filter type libpng warning: Ignoring bad adaptive filter type libpng warning: Extra compressed data. libpng warning: Extra compression data Fatal error: imagecreatefrompng(): gd-png: fatal libpng error: IDAT: CRC error in C:\png2pdf\bad.php on line 11 This particular image is broken. How do / can I upgrade libpng? Or is this part of php_gd2.dll? Previous Comments: ------------------------------------------------------------------------ [2005-09-26 16:31:59] richard dot quadling at bandvulc dot co dot uk Ha. Someone's deleted the broken image! Argh!!!! Ha! Downloading it from the web and trying again. ------------------------------------------------------------------------ [2005-09-26 16:16:27] iliaa@php.net 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. Due to the volume of reports we can not explain in detail here why your report is not a bug. The support channels will be able to provide an explanation for you. Thank you for your interest in PHP. PHP cannot do anything about warnings messages generated by the libpng library. ------------------------------------------------------------------------ [2005-09-26 16:08:40] richard dot quadling at bandvulc dot co dot uk Downloading it now. Any ideas if this will be fixed in V5.0.x or only in V5.1.+? ------------------------------------------------------------------------ [2005-09-26 16:05:11] marcot@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip No crash on my system with 5_1 CVS. Try the latest snapshot and hopefully you will be able to fail gracefully (you can hide the warnings with the @ operator). ------------------------------------------------------------------------ [2005-09-26 10:18:51] richard dot quadling at bandvulc dot co dot uk I didn't realise how long the error comment was. I just cut and pasted from my console. Sorry. ------------------------------------------------------------------------ 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/34640 -- Edit this bug report at http://bugs.php.net/?id=34640&edit=1