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  1. Qt
  2. QTBUG-104985

QByteArray::fromBase64Encoding(toBase64()) round-trip fails for data > 2GiB

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Details

    • 3
    • d76bf64531 (qt/qtbase/dev) d76bf64531 (qt/tqtc-qtbase/dev) 9d036b0c67 (qt/qtbase/6.4) 9d036b0c67 (qt/tqtc-qtbase/6.4) adb3b51eb4 (qt/tqtc-qtbase/6.2) 1fe0b3a7ec (qt/qtbase/6.3) 1fe0b3a7ec (qt/tqtc-qtbase/6.3)
    • Foundation Sprint 61, Foundation Sprint 62

    Description

      This code fails on 64-bit platforms:

      const QByteArray b1 = ~~~ more than 2GiB of data ~~~;
const QByteArray b64 = b1.toBase64();
const QByteArray b2 = QByteArray::fromBase64Encoding(b64);
assert(b1 == b2);

      There's some truncation going on.

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          resulted from

          Task - A task that needs to be done. QTBUG-103531 Finish migration to qsizetype [qtbase/src/corelib/text]

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              mmutz Marc Mutz
              mmutz Marc Mutz
              Vladimir Minenko Vladimir Minenko
              Alex Blasche Alex Blasche
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              Dates

                Created:
                Updated:
                Resolved: