From b435e659b5c9e666055e2282159b8606f6331b31 Mon Sep 17 00:00:00 2001
From: Brad Jorsch <bjorsch@wikimedia.org>
Date: Wed, 3 Feb 2016 15:18:52 -0500
Subject: [PATCH] OutputPage: Don't get a ParserOptions for $wgUser before the
 end of Setup.php

Until Setup.php completes, we can't access the "current" user and
trying to do so logs a warning. So don't try.

Bug: T124367
Change-Id: I1acc82760c368a24448f3c90e268b24414e43a30
---
 includes/OutputPage.php | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/includes/OutputPage.php b/includes/OutputPage.php
index 3adef5b251..317c1261d6 100644
--- a/includes/OutputPage.php
+++ b/includes/OutputPage.php
@@ -1573,11 +1573,42 @@ class OutputPage extends ContextSource {
 	 * @return ParserOptions
 	 */
 	public function parserOptions( $options = null ) {
+		if ( $options !== null && !empty( $options->isBogus ) ) {
+			// Someone is trying to set a bogus pre-$wgUser PO. Check if it has
+			// been changed somehow, and keep it if so.
+			$anonPO = ParserOptions::newFromAnon();
+			$anonPO->setEditSection( false );
+			if ( !$options->matches( $anonPO ) ) {
+				wfLogWarning( __METHOD__ . ': Setting a changed bogus ParserOptions: ' . wfGetAllCallers( 5 ) );
+				$options->isBogus = false;
+			}
+		}
+
 		if ( !$this->mParserOptions ) {
+			if ( !$this->getContext()->getUser()->isSafeToLoad() ) {
+				// $wgUser isn't unstubbable yet, so don't try to get a
+				// ParserOptions for it. And don't cache this ParserOptions
+				// either.
+				$po = ParserOptions::newFromAnon();
+				$po->setEditSection( false );
+				$po->isBogus = true;
+				if ( $options !== null ) {
+					$this->mParserOptions = empty( $options->isBogus ) ? $options : null;
+				}
+				return $po;
+			}
+
 			$this->mParserOptions = ParserOptions::newFromContext( $this->getContext() );
 			$this->mParserOptions->setEditSection( false );
 		}
-		return wfSetVar( $this->mParserOptions, $options );
+
+		if ( $options !== null && !empty( $options->isBogus ) ) {
+			// They're trying to restore the bogus pre-$wgUser PO. Do the right
+			// thing.
+			return wfSetVar( $this->mParserOptions, null, true );
+		} else {
+			return wfSetVar( $this->mParserOptions, $options );
+		}
 	}
 
 	/**
-- 
2.20.1