#21005 [Opn->Bgs]: libpng 1.2.5; segfault while loading png image

ID: 21005 Updated by: sniper@php.net Reported By: tom@furi.ca -Status: Open +Status: Bogus Bug Type: GD related Operating System: Linux 2.4.18 PHP Version: 4.2.3 New Comment: This is libgd problem, not PHP problem. Previous Comments: ------------------------------------------------------------------------ [2002-12-13 22:18:02] tom@furi.ca After recompiling php 4.2.3 with the gd image functions, I've found that libpng 1.2.5 is not compatible with php 4.2.3. While loading a png file using ImageCreateFromPNG($img); where $img is the filename, php would segfault. After recompiling php multiple times, i've still had the same problem. I gave the stable version of php in the development stage a try, and still recieved a segfault. So then i used the strace function at the command line along with the php cli to figure out that it would segfault when the png image was loaded. When i viewed the libpng website, i found the following... "The current public release, libpng 1.2.5, has a new API (since 1.0.x) for dynamically enabling and disabling certain optimizations (currently limited to MMX code--which is compiled into GNU C versions only if PNG_THREAD_UNSAFE_OK is defined, due to the gcc code's use of static global variables to work around addressing limitations). As a consequence of this and some other changes, its DLL and shared-library (.so) numbers were bumped from 2 to 3." After reading this, i've decided to downgrade to libpng1.0.15 and recompiled php. After doing this, the segfault would not appear again. Hopes this helps... ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=21005&edit=1