"freerdp_uniconv_out" error dealing with multi-byte characters under Windows about freerdp-old HOT 2 OPEN

Have you been able to reproduce this issue using current master branch?

from freerdp-old.

Yes, I have tested the current master branch, the issue still exists.
Moreover, the issue also exists in function "freerdp_uniconv_in".

Chinese characters do not necessarily account for every 2 bytes.
In fact, many characters occupy four bytes.

GB 18030-2000 is the new “compulsory” Chinese national standard.

http://en.wikipedia.org/wiki/GB_18030

The mandatory part of GB 18030-2005 consists of 1 byte and 2 byte encoding, together with 4 byte encoding for CJK Unified Ideographs Extension A. The corresponding Unicode code points of this subset lie entirely in the BMP.

In a move of historic significance for software supporting Unicode, the PRC decided to mandate support of certain code points outside the BMP. This means that software can no longer get away with treating characters as 16 bit fixed width entities (UCS-2). Therefore they must either process the data in a variable width format (such as UTF-8 or UTF-16), which are the most common choices, or move to a larger fixed width format (such as UCS-4 or UTF-32). Microsoft made the change from UCS-2 to UTF-16 with Windows 2000."

from freerdp-old.