Fatal error: Call to undefined function apply_filters() in define.php on line 11

I’ve patched define.php as:

function w3_can_print_comment(&$buffer) {
+ print_r(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS));
+ die(‘—‘);
return apply_filters(‘w3tc_can_print_comment’, w3_is_xml($buffer) && !defined(‘DOING_AJAX’));
}

And here is content with backtrace:

Array
(
[0] => Array
(
[file] => <path>\wp-content\plugins\w3-total-cache\lib\W3\PgCache.php
[line] => 301
[function] => w3_can_print_comment
)

[1] => Array
(
[file] => <path>\wp-content\plugins\w3-total-cache\lib\W3\PgCache.php
[line] => 202
[function] => process_cached_page
[class] => W3_PgCache
[type] => ->
)

[2] => Array
(
[file] => <path>\wp-content\advanced-cache.php
[line] => 35
[function] => process
[class] => W3_PgCache
[type] => ->
)

[3] => Array
(
[file] => <path>\wp-settings.php
[line] => 58
[args] => Array
(
[0] => <path>\wp-content\advanced-cache.php
)

[function] => include
)

[4] => Array
(
[file] => <path>\wp-config.php
[line] => 106
[args] => Array
(
[0] => <path>\wp-settings.php
)

[function] => require_once
)

[5] => Array
(
[file] => <path>\wp-load.php
[line] => 29
[args] => Array
(
[0] => <path>\wp-config.php
)

[function] => require_once
)

[6] => Array
(
[file] => <path>\wp-blog-header.php
[line] => 12
[args] => Array
(
[0] => <path>\wp-load.php
)

[function] => require_once
)

[7] => Array
(
[file] => <path>\index.php
[line] => 17
[args] => Array
(
[0] => <path>\wp-blog-header.php
)

[function] => require
)

)
—

W/o DEBUG_BACKTRACE_IGNORE_ARGS I can see the content is generated as expected, the whole page content is carried in one of args.