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Details

Type: Bug
Resolution: Unresolved
Priority: P3: Somewhat important
Fix Version/s: None
Affects Version/s: dev
Component/s: Core: QString and Unicode
Labels:
None

Commits:
e4682408b (dev), c2ce67af9 (6.5), ff469d570 (6.6)

Description

Discussion at https://codereview.qt-project.org/c/qt/qtbase/+/479873/comment/8ee81717_079940ee/

The following loop does not terminate before the system runs out of memory:

QString s;
while (!s.d.freeSpaceAtBegin())
    s.prepend("data");

Looks like it's due to the size of the data being 4. It works with prepend(u'd').

Attachments

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For Gerrit Dashboard: QTBUG-114167
#	Subject	Branch	Project	Status	CR	V
481340,8	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	dev	qt/qtbase	Status: MERGED	+2	0
482661,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.6	qt/qtbase	Status: ABANDONED	0	0
482662,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482683,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.6	qt/qtbase	Status: ABANDONED	0	0
482684,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482705,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.6	qt/qtbase	Status: ABANDONED	0	0
482706,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482726,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.6	qt/qtbase	Status: ABANDONED	0	0
482727,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482793,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.6	qt/qtbase	Status: ABANDONED	0	0
482794,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482828,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482831,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.6	qt/qtbase	Status: ABANDONED	0	0
482848,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482851,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.6	qt/qtbase	Status: ABANDONED	0	0
482870,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482873,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.6	qt/qtbase	Status: ABANDONED	0	0
482902,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482903,2	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.6	qt/qtbase	Status: MERGED	+2	0
482910,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482917,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482924,1	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: ABANDONED	0	0
482935,2	Add tst_QString::prependEventuallyProducesFreeSpaceAtBegin()	6.5	qt/qtbase	Status: MERGED	+2	0