Log a backtrace from the culprit location if headers were already sent

[lhc/web/wiklou.git] / includes / resourceloader / ResourceLoader.php

diff --git a/includes/resourceloader/ResourceLoader.php b/includes/resourceloader/ResourceLoader.php
index a55cbc1..59c60df 100644 (file)
--- a/includes/resourceloader/ResourceLoader.php
+++ b/includes/resourceloader/ResourceLoader.php
@@ -818,6 +818,7 @@ class ResourceLoader implements LoggerAwareInterface {
         * @return void
         */
        protected function sendResponseHeaders( ResourceLoaderContext $context, $etag, $errors ) {
+               \MediaWiki\HeaderCallback::warnIfHeadersSent();
                $rlMaxage = $this->config->get( 'ResourceLoaderMaxage' );
                // Use a short cache expiry so that updates propagate to clients quickly, if:
                // - No version specified (shared resources, e.g. stylesheets)