From b138a9b228ea75814dfad26f4b6fed9360732167 Mon Sep 17 00:00:00 2001
From: Daimona Eaytoy <daimona.wiki@gmail.com>
Date: Sun, 15 Sep 2019 15:53:14 +0200
Subject: [PATCH] Fix using null for a non-nullable argument

These are reported by phan as PhanTypeMismatchArgumentNullableInternal
when null_casts_as_any_type is disabled.

Change-Id: I85076ee31c1bfc59a19600e84da0d915e425890a
---
 includes/GlobalFunctions.php              |  2 +-
 includes/exception/MWExceptionHandler.php |  2 +-
 includes/libs/mime/MimeAnalyzer.php       |  2 +-
 includes/parser/Parser.php                | 13 +++++--------
 includes/specials/SpecialMyLanguage.php   | 14 +++++++-------
 includes/upload/UploadBase.php            |  2 +-
 6 files changed, 16 insertions(+), 19 deletions(-)

diff --git a/includes/GlobalFunctions.php b/includes/GlobalFunctions.php
index 3b4e657f75..2ed385e225 100644
--- a/includes/GlobalFunctions.php
+++ b/includes/GlobalFunctions.php
@@ -518,7 +518,7 @@ function wfExpandUrl( $url, $defaultProto = PROTO_CURRENT ) {
 		}
 	}
 
-	$defaultProtoWithoutSlashes = substr( $defaultProto, 0, -2 );
+	$defaultProtoWithoutSlashes = $defaultProto !== null ? substr( $defaultProto, 0, -2 ) : '';
 
 	if ( substr( $url, 0, 2 ) == '//' ) {
 		$url = $defaultProtoWithoutSlashes . $url;
diff --git a/includes/exception/MWExceptionHandler.php b/includes/exception/MWExceptionHandler.php
index d7c5a855bd..4a72d72d6b 100644
--- a/includes/exception/MWExceptionHandler.php
+++ b/includes/exception/MWExceptionHandler.php
@@ -350,7 +350,7 @@ class MWExceptionHandler {
 
 		// Look at message to see if this is a class not found failure
 		// HHVM: Class undefined: foo
-		// PHP5: Class 'foo' not found
+		// PHP7: Class 'foo' not found
 		if ( preg_match( "/Class (undefined: \w+|'\w+' not found)/", $message ) ) {
 			// phpcs:disable Generic.Files.LineLength
 			$msg = <<<TXT
diff --git a/includes/libs/mime/MimeAnalyzer.php b/includes/libs/mime/MimeAnalyzer.php
index bafe5e3098..6fca0438f5 100644
--- a/includes/libs/mime/MimeAnalyzer.php
+++ b/includes/libs/mime/MimeAnalyzer.php
@@ -1089,7 +1089,7 @@ EOT;
 
 		// Special code for ogg - detect if it's video (theora),
 		// else label it as sound.
-		if ( $mime == 'application/ogg' && file_exists( $path ) ) {
+		if ( $mime == 'application/ogg' && is_string( $path ) && file_exists( $path ) ) {
 			// Read a chunk of the file
 			$f = fopen( $path, "rt" );
 			if ( !$f ) {
diff --git a/includes/parser/Parser.php b/includes/parser/Parser.php
index b27338ca2b..ec1628f8d0 100644
--- a/includes/parser/Parser.php
+++ b/includes/parser/Parser.php
@@ -2312,6 +2312,11 @@ class Parser {
 		$line = $a->current(); # Workaround for broken ArrayIterator::next() that returns "void"
 		$s = substr( $s, 1 );
 
+		if ( is_null( $this->mTitle ) ) {
+			throw new MWException( __METHOD__ . ": \$this->mTitle is null\n" );
+		}
+		$nottalk = !$this->mTitle->isTalkPage();
+
 		$useLinkPrefixExtension = $this->getTargetLanguage()->linkPrefixExtension();
 		$e2 = null;
 		if ( $useLinkPrefixExtension ) {
@@ -2319,14 +2324,6 @@ class Parser {
 			# e.g. in the case of 'The Arab al[[Razi]]', 'al' will be matched
 			$charset = $this->contLang->linkPrefixCharset();
 			$e2 = "/^((?>.*[^$charset]|))(.+)$/sDu";
-		}
-
-		if ( is_null( $this->mTitle ) ) {
-			throw new MWException( __METHOD__ . ": \$this->mTitle is null\n" );
-		}
-		$nottalk = !$this->mTitle->isTalkPage();
-
-		if ( $useLinkPrefixExtension ) {
 			$m = [];
 			if ( preg_match( $e2, $s, $m ) ) {
 				$first_prefix = $m[2];
diff --git a/includes/specials/SpecialMyLanguage.php b/includes/specials/SpecialMyLanguage.php
index 537db9ee1d..408bd92883 100644
--- a/includes/specials/SpecialMyLanguage.php
+++ b/includes/specials/SpecialMyLanguage.php
@@ -71,14 +71,14 @@ class SpecialMyLanguage extends RedirectSpecialArticle {
 		if ( $subpage !== null ) {
 			$provided = Title::newFromText( $subpage );
 			$base = $provided;
-		}
 
-		if ( $provided && strpos( $subpage, '/' ) !== false ) {
-			$pos = strrpos( $subpage, '/' );
-			$basepage = substr( $subpage, 0, $pos );
-			$code = substr( $subpage, $pos + 1 );
-			if ( strlen( $code ) && Language::isKnownLanguageTag( $code ) ) {
-				$base = Title::newFromText( $basepage );
+			if ( $provided && strpos( $subpage, '/' ) !== false ) {
+				$pos = strrpos( $subpage, '/' );
+				$basepage = substr( $subpage, 0, $pos );
+				$code = substr( $subpage, $pos + 1 );
+				if ( strlen( $code ) && Language::isKnownLanguageTag( $code ) ) {
+					$base = Title::newFromText( $basepage );
+				}
 			}
 		}
 
diff --git a/includes/upload/UploadBase.php b/includes/upload/UploadBase.php
index d7dfffa39f..f60c4e3c10 100644
--- a/includes/upload/UploadBase.php
+++ b/includes/upload/UploadBase.php
@@ -1316,7 +1316,7 @@ abstract class UploadBase {
 			$enc = null;
 		}
 
-		if ( $enc ) {
+		if ( $enc !== null ) {
 			$chunk = iconv( $enc, "ASCII//IGNORE", $chunk );
 		}
 
-- 
2.20.1