From: Andreas Zwinkau <qznc@go.to>
Date: Tue, 3 Jul 2012 21:13:15 +0000 (+0200)
Subject: Fix wctomb use
X-Git-Url: http://81.2.79.47:8989/gitweb/?a=commitdiff_plain;h=28e7443f9bcc1fac186394847c1b788e39daed5e;p=zefram%2Fminetest%2Fminetest_engine.git

Fix wctomb use

wctomb(NULL, _) returns "nonzero if the encoding has nontrivial shift state, or zero if the encoding is stateless."

I assume the intentation was to get the size of the target buffer.
Use MB_CUR_MAX for this.
---

diff --git a/src/keycode.cpp b/src/keycode.cpp
index c3c06bb7..df3ebc9e 100644
--- a/src/keycode.cpp
+++ b/src/keycode.cpp
@@ -293,8 +293,7 @@ KeyPress::KeyPress(const irr::SEvent::SKeyInput &in)
 	if (valid_kcode(Key)) {
 		m_name = KeyNames[Key];
 	} else {
-		size_t maxlen = wctomb(NULL, Char);
-		m_name.resize(maxlen+1, '\0');
+		m_name.resize(MB_CUR_MAX+1, '\0');
 		int written = wctomb(&m_name[0], Char);
 		assert (written >= 0 && "unexpected multibyte character");
 	}