From: Nikita Popov <nikita.ppv@gmail.com>
Date: Wed, 19 Jun 2019 12:35:44 +0000 (+0200)
Subject: Fix shift UB in mbfilter_utf32.c
X-Git-Tag: php-7.4.0alpha2~51^2~10
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ae2bc6297ebc4e5992949a4e0fbeaa0f03c62704;p=php

Fix shift UB in mbfilter_utf32.c
---

diff --git a/ext/mbstring/libmbfl/filters/mbfilter_utf32.c b/ext/mbstring/libmbfl/filters/mbfilter_utf32.c
index 5b02362b5d..b1b41331eb 100644
--- a/ext/mbstring/libmbfl/filters/mbfilter_utf32.c
+++ b/ext/mbstring/libmbfl/filters/mbfilter_utf32.c
@@ -138,7 +138,7 @@ int mbfl_filt_conv_utf32_wchar(int c, mbfl_convert_filter *filter)
 		if (endian) {
 			n = c & 0xff;
 		} else {
-			n = (c & 0xff) << 24;
+			n = (unsigned) (c & 0xff) << 24;
 		}
 		filter->cache = n;
 		filter->status++;