id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
7390	forbiddance of ini_set('include_path', ...) function causes fatal error at revision feature	codestyling	anonymous	"The newly introduced revision feature uses PHP ini_set() function but must not. Several provider doesn't permit setting ''php.ini'' values especially the ''include_path'', which should be temporary switched during load of Text/Diff files. The fatal error resulting looks like this out of real customer occurance:

{{{
Warning: ini_set() has been disabled for security reasons in /srv/www/httpd/phost/l/de/pytalhost/laz/web/wordpress/wp-includes/pluggable.php on line 1517
Warning: require_once(Text/Diff/Renderer.php) [function.require-once]: failed to open stream: No such file or directory in /srv/www/httpd/phost/l/de/pytalhost/laz/web/wordpress/wp-includes/Text/Diff/Renderer/inline.php on line 17
Fatal error: require_once() [function.require]: Failed opening required ‘Text/Diff/Renderer.php’ (include_path=’.:/srv/www/httpd/phost/l/de/pytalhost/laz/web’) in /srv/www/httpd/phost/l/de/pytalhost/laz/web/wordpress/wp-includes/Text/Diff/Renderer/inline.php on line 17
}}}

This error affects all editor pages won't longer behave as expected. Moreover some provider doesn't show any errors and silently abort the engine. This results in white pages served!
I have attached a patch suggestion (containing 4 file from WP 2.6.0) which doesn't use ini_set() anymore but all require calls now using _ _FILE_ _ evaluation of their appropriated complete file path. Has been successful tested at this affected system. Can also be simulated, if you comment the ''ini_set()'' inside '''pluggable.php''' ''function wp_text_diff()''.
"	defect (bug)	closed	high		General	2.6	blocker	duplicate