4 byte GB18030 character convert to Unicode ERROR

[cnldw]

There is a bug in line 185 of the qt5compat/src/core5/codecs/qgb18030codec.cpp file

The length of Unicode characters generated after encoding with 4-byte GB18030 may be longer than 2 bytes, but QString default can only store 2-byte Unicode characters. Therefore, optimization is needed to store greater than 2 bytes GB18030 characters as proxies, otherwise, some 4-byte GB18030 characters will be converted to other characters during encoding into Qstring. Here is an optimization suggestion：

                  if (u>0xFFFF){
                  resultData[unicodeLen] = QChar::highSurrogate(u);
                  ++unicodeLen;
                  resultData[unicodeLen] = QChar::lowSurrogate(u);
                  ++unicodeLen;
                }
                else{
                resultData[unicodeLen] = qValidChar(u);
                ++unicodeLen;
                }

There is a bug in line 8883 of the qt5compat/src/core5/codecs/qgb18030codec.cpp file
0xE248 should be changed to 0x1E248

            } else if (InRange(gb4lin, 0x2E248, 0x12E247)) {
                /* GB+90308130 - GB+E3329A35 */
                uni = gb4lin - 0x1E248;
            } else {
                /* undefined or reserved area */
                len = 1;
                uni = QChar::ReplacementCharacter;
            }