Bug #77982 [Asn->Fbk]: Valid PNG file does not resize and outputs a strange error

Edit report at https://bugs.php.net/bug.php?id=77982&edit=1 ID: 77982 Updated by: cmb@php.net Reported by: mark at kreine dot com Summary: Valid PNG file does not resize and outputs a strange error -Status: Assigned +Status: Feedback Type: Bug Package: GD related Operating System: CentOS 7 PHP Version: 7.3.5 Assigned To: cmb Block user comment: N Private report: N New Comment: The error message is raised by libgd, because png_create_read_struct() returns NULL to signal failure[1]. A possible reason for this failure is that the libpng version PHP has been built against is incompatible with the libpng version that is used at runtime. Make sure that this is not the case. [1] <https://github.com/php/php-src/blob/php-7.3.5/ext/gd/libgd/gd_png.c#L154-L162> Previous Comments: ------------------------------------------------------------------------ [2019-05-07 15:10:05] mark at kreine dot com Description: ------------ I'm trying to resize a PNG file. Instead of an actual resizing, I can see a very strange error, which perhaps has nothing to do with my code. The file that I use is here: https://imgur.com/vjnDpJq I have myself opened GIMP and draw this, so this cannot be invalid PNG file. This is the error that's being always reproduced: [Tue May 07 16:58:42.573572 2019] [php7:warn] [pid 7539:tid 140392702551808] [client 127.0.0.1:42140] PHP Warning: imagecreatefrompng(): gd-png error: cannot allocate libpng main struct in /var/www/sites/photogallery/index.php on line 7 Here is a configure string, which was used in order to compile PHP: ./configure --prefix=/soft/php --with-apxs2=/soft/httpd/bin/apxs --with-libxml-dir=/soft/libxml --with-png-dir=/soft/libpng --with-curl=shared,/soft/curl --with-bz2=shared,/soft/bzip --with-mysqli=shared,/soft/mysql/bin/mysql_config --with-gettext=shared,/soft/gettext --with-pcre-dir=/soft/pcre --with-jpeg-dir=/soft/libjpeg --with-gd=shared --with-zlib=shared,/soft/zlib --with-pdo-mysql=shared,/soft/mysql --enable-calendar --enable-mbstring --enable-bcmath --enable-ftp --enable-zip --enable-soap --enable-exif --enable-intl --enable-sockets Test script: --------------- function resizePng($new_width, $new_height) { $file = "/var/www/sites/photogallery/image.png"; $im = imagecreatefrompng($file); $imnew = imagecreatetruecolor($new_width, $new_height); imagecopyresized($imnew, $im, 0, 0, 0, 0, $new_width, $new_height, 1920, 1080); header("Content-type: image/png"); imagepng($imnew); } Expected result: ---------------- Resized PNG which is to be outputted in browser. Actual result: -------------- An error as follows: [Tue May 07 16:58:42.573572 2019] [php7:warn] [pid 7539:tid 140392702551808] [client 127.0.0.1:42140] PHP Warning: imagecreatefrompng(): gd-png error: cannot allocate libpng main struct in /var/www/sites/photogallery/index.php on line 7 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77982&edit=1