r188031 added the following call in WebContextMenuProxyGtk::CancelTracking: m_menu.setPlatformDescription(nullptr); But the first line of code in setPlatformDescription is an assert to be sure the parameter isn't null. Reminder: now that we have debug fission enabled by default, we can start using debug builds instead of release builds for development, and avoid such issues.
Created attachment 261600 [details] Patch
Comment on attachment 261600 [details] Patch Clearing flags on attachment: 261600 Committed r190045: <http://trac.webkit.org/changeset/190045>
All reviewed patches have been landed. Closing bug.