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  1. Qt
  2. QTBUG-104391

[Reg 5.15.2 -> 5.15.10, 6.3.1] Change in QString::asprintf() behaviour

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      Code

      const char *rawBytes = u8"你好世界！";
int nChars = 5;
QString str = QString::asprintf("%-*.*s", nChars, nChars, rawBytes);

qDebug().noquote() << rawBytes;
qDebug().noquote() << str;
qDebug().noquote() << QByteArray(rawBytes).toHex(' ');
qDebug().noquote() << str.toUtf8().toHex(' ');

       

      Output for Qt 5.15.2 (expected)

      你好世界！
你好世界！
e4 bd a0 e5 a5 bd e4 b8 96 e7 95 8c ef bc 81
e4 bd a0 e5 a5 bd e4 b8 96 e7 95 8c ef bc 81

       

      Output for Qt 5.15.10 and 6.3.1 (unexpected)

      你好世界！
你��  
e4 bd a0 e5 a5 bd e4 b8 96 e7 95 8c ef bc 81
e4 bd a0 ef bf bd ef bf bd 20 20

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            thiago Thiago Macieira
            skoh-qt Sze Howe Koh
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              Created:
              Updated:
              Resolved:

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