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