Bug 51086 – [Qt] QWebView::setUrl leaks 6 MB

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: JavaScriptCore

According to BoundsChecker, and verified with Memory Validator, the following code results 10,245 leaks for a total 6 MB in memory leaked:

#include <QApplication>
#include <QWebView>

int main(int argc, char *argv[])
{
  QApplication a(argc, argv);
  QWebView*  pWidget = new QWebView();
  pWidget->setUrl(QUrl("http://www.google.com"));
  pWidget->show();

  a.exec();

  delete pWidget;

  return 0;
}

using Qt 4.6.3.  The largest single leak is 4.2 MB with the following call stack:

RegisterFile::RegisterFile
Interpreter::Interpreter
JSGlobalData::JSGlobalData
JSGlobalData::create
JSGlobalData::createLeaked

Additional calls to setUrl add 6-7 additional MBs.

[Benjamin Poulain]

Please follow this to report bugs on QtWebKit: http://trac.webkit.org/wiki/QtWebKitBugs

Zoltan, does that looks valid or is it a buggy tool?

[Zoltan Horvath]

I don't know MS BoundsChecke. I don't think that these classes are leaking.

Reporter, can you reproduce this with latest trunk or with Qt-4.7.1 also?

[Alexis Menard (darktears)]

I can't find leak with Valgrind. I close.