diff -Naur qt-x11-free-3.3.3.orig/src/tools/qstring.cpp qt-x11-free-3.3.3/src/tools/qstring.cpp
--- qt-x11-free-3.3.3.orig/src/tools/qstring.cpp	2004-08-05 18:41:58 +0400
+++ qt-x11-free-3.3.3/src/tools/qstring.cpp	2004-12-30 12:34:17 +0300
@@ -5706,6 +5706,8 @@
         slen = int(strlen(utf8));
     }
     len = len < 0 ? slen : QMIN(slen, len);
+    if ( len == 0 || *utf8 == '\0' )
+	return QString::fromLatin1( "" );
     QString result;
     result.setLength( len*2 ); // worst case
     QChar *qch = (QChar *)result.unicode();