qt5base-lts/tests
Sona Kurazyan 9e61cc4f72 Fix crash when cancelling a QFuture that has continuation with context
To support cancellation of continuations attached via the parent future,
we store a pointer to continuation future's data in parent. This
requires preserving the lifetime of continuation future's data while the
parent is still alive (see 24dedaeaa1).
This is achieved by capturing the promise in the continuation's lambda,
which is only cleaned up after the parent's data is destroyed. This is
already the case for continuations without context, but was overlooked
for continuations with context: they transfer the ownership of the
continuation promise to lambda passed to QMetaObject::invokeMethod(),
which destroys the lambda's context after it's run. As a result, the
continuation's promise (and data, if there are no other copies of it)
is also destroyed, leaving the parent pointing to deleted continuation
data.

To fix this, capture a copy of continuation future's ref-counted data in
the continuation's lambda. This will guarantee that the continuation
data remains alive until the parent is destroyed and the continuation
is cleaned up.

Fixes: QTBUG-108790
Pick-to: 6.5 6.4 6.2
Change-Id: Ief4b37f31e652988d13b03499505ac65c7889226
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2023-01-06 14:00:56 +00:00
..
auto Fix crash when cancelling a QFuture that has continuation with context 2023-01-06 14:00:56 +00:00
baseline Update base line test case for widgets 2023-01-06 14:51:29 +01:00
benchmarks Deprecate QDateTime methods using plain Qt::TimeSpec 2022-12-10 06:39:33 +01:00
global
libfuzzer Change the license of all CMakeLists.txt and *.cmake files to BSD 2022-08-23 23:58:42 +02:00
manual wasm: Work on wasm accessibility elements and events 2022-12-27 14:30:25 +00:00
shared Tests: fix namespaced build on Windows 2022-10-25 18:33:14 -07:00
testserver Use SPDX license identifiers 2022-05-16 16:37:38 +02:00
CMakeLists.txt Change the license of all CMakeLists.txt and *.cmake files to BSD 2022-08-23 23:58:42 +02:00
README

This directory contains autotests and benchmarks based on Qt Test. In order
to run the autotests reliably, you need to configure a desktop to match the
test environment that these tests are written for.

Linux X11:

   * The user must be logged in to an active desktop; you can't run the
     autotests without a valid DISPLAY that allows X11 connections.

   * The tests are run against a KDE3 or KDE4 desktop.

   * Window manager uses "click to focus", and not "focus follows mouse". Many
     tests move the mouse cursor around and expect this to not affect focus
     and activation.

   * Disable "click to activate", i.e., when a window is opened, the window
     manager should automatically activate it (give it input focus) and not
     wait for the user to click the window.