qt5base-lts/tests/auto/corelib/io/qbuffer
Marc Mutz 61157c8354 QBuffer: fix writing more than two GiB of data
In Qt 6, QByteArray can hold more than two GiB of data on 64-bit
platforms, so QBuffer should be able to handle writes of more than two
GiB, too. But the implementation didn't check for overflow and held
sizes in int variables, so it happily reported success but wrote data
only mod INT_MAX.

Fix by carefully avoiding overflow and using size variables of proper
type.

[ChangeLog][QtCore][QBuffer] Fixed silent data truncation when writing
more than two GiB at once on 64-bit platforms.

Pick-to: 6.3 6.2
Fixes: QTBUG-102171
Change-Id: Ib666f9f7db24495b4ed64191a48b35edc410f7e9
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2022-04-04 08:17:09 +02:00
..
.gitignore Moving relevant tests to corelib/io 2011-08-31 10:08:38 +02:00
CMakeLists.txt CMake: Regenerate projects to use new qt_internal_ API 2020-09-23 16:59:06 +02:00
tst_qbuffer.cpp QBuffer: fix writing more than two GiB of data 2022-04-04 08:17:09 +02:00