From 212f9308d4b4a3fcbdd801e8e7917aa5c2034b78 Mon Sep 17 00:00:00 2001
From: Tim Schumacher <timschumi@gmx.de>
Date: Sun, 19 Sep 2021 13:47:02 +0200
Subject: [PATCH] LibC: Specifically clear only stored bytes after successful
 mbrtowc

---
 Userland/Libraries/LibC/wchar.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Userland/Libraries/LibC/wchar.cpp b/Userland/Libraries/LibC/wchar.cpp
index 040110b084..bf2f855b14 100644
--- a/Userland/Libraries/LibC/wchar.cpp
+++ b/Userland/Libraries/LibC/wchar.cpp
@@ -280,8 +280,8 @@ size_t mbrtowc(wchar_t* pwc, const char* s, size_t n, mbstate_t* state)
         *pwc = codepoint;
     }
 
-    // We don't have a shift state that we need to keep, so just clear the entire state
-    *state = {};
+    // We want to read the next multibyte character, but keep all other properties.
+    state->stored_bytes = 0;
 
     if (codepoint == 0) {
         return 0;