Hello everyone.
I have a problem with kdevelop, indeed, I encounter a problem with one code written in c++, when I work with this code, kdevelop sometimes freezes and I have to manually stopped. But when I turn off the background syntactic parser, the program no longer crashes. I would still like to emphasize that I encounter this problem with a single program.
Then, someone already met this problem?
Thank you all.

Hey,

Sorry for your issue. Please report a bug on bugs.kde.org and attach the code you work on as well as the version of KDevelop you are using.

Thanks,
Sven

and how should I do to restore my Kdevelop?

Just restart it?