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Details

Type: Bug
Resolution: Done
Priority: P2: Important
Fix Version/s: 5.15.9, 6.0.1, 6.1.0 Alpha
Affects Version/s: 5.14.2, 5.15.0
Component/s: Core: Locales (i18n)
Labels:
None

Story Points:
5
Commits:
0180a1ab8229c6a15d19317bf7680663ac402910 (qt/qtbase/dev) 95d3fe5afa016410580fb995044cf1145c03470a (qt/tqtc-qtbase/tqtc/lts-5.15) 27cde011277b18e06de75b3369c4a13451e6c3b0 (qt/qtbase/6.0)
Sprint:
Qt6_Foundation_Sprint 23, Qt6_Foundation_Sprint 24, Qt6_Foundation_Sprint 25, Qt6_Foundation_Sprint 26

Description

QCalendar class uses its internal containers shared across the class, such as Registry::byId and Registry::byName. But the access to those containers is not protected from multi-thread access. As a result, despite the document's "all functions in this class are reentrant" statement, this class can be used safely only form one thread.

Attachments

Issue Links

is duplicated by

QTBUG-85692 Race in QTime::toString

Closed

QTBUG-88815 QDate::FromString breaks when accessed from multiple threads using default calendar parameter

Closed

relates to

QTBUG-93004 Assert and crash in qcalendar.cpp when the first call to QDateTime::toString is done from two simultaneous threads

Closed

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For Gerrit Dashboard: QTBUG-84575
#	Subject	Branch	Project	Status	CR	V
309227,2	Add QMutex to fix race condition in QCalendar	dev	qt/qtbase	Status: ABANDONED	0	0
309280,2	QCalendar: protect the registry from concurrent access	dev	qt/qtbase	Status: ABANDONED	+2	0
309673,14	Make QCalendar's backend registration reentrant-safe	dev	qt/qtbase	Status: MERGED	+2	0
316326,2	Protect the calendar registry methods from use during destruction	dev	qt/qtbase	Status: ABANDONED	-1	0
331253,2	Make QCalendar's backend registration reentrant-safe	6.0	qt/qtbase	Status: MERGED	+2	0
331255,2	Make QCalendar's backend registration reentrant-safe	tqtc/lts-5.15	qt/tqtc-qtbase	Status: MERGED	+2	0