Details
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Type:
Bug
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Status: Closed
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Priority:
Not Evaluated
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Resolution: Fixed
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Affects Version/s: 5.12.0
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Fix Version/s: 5.13.0 Alpha 1
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Component/s: Core: Date/Time
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Labels:None
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Platform/s:
Windows
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Commits:d5891036de4622e18cf4d68750610224ad201ee0
Description
Function QDateTime::toString(const QString& format) is not reentrant.
It crashes if use this function in multi-thread application, even with own instances of QDateTime.
Example:
#include <QCoreApplication>
#include <thread>
#include <QDateTime>
void func()
{
QDateTime dt = QDateTime::currentDateTimeUtc();
for (int i = 0; i < 1000000; i++)
QString s = dt.toString(QStringLiteral("hh:mm:ss.zzz"));
}
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
std::thread t1(func);
std::thread t2(func);
std::thread t3(func);
t1.join();
t2.join();
t3.join();
return a.exec();
}