[Wayland-bugs] [Bug 87824] Dangling pointers and memory corruption after output recreate.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87824

            Bug ID: 87824
           Summary: Dangling pointers and memory corruption after output
                    recreate.
           Product: Wayland
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: weston
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: andriy.prystupa at globallogic.com

Way to reproduce:
- weston backend closes current output and creates new one.
- old weston_output structure is released. 
- compositor views have pointers to old weston_output.
- these pointers became dangling.

Fix:
in weston_compositor_remove_output(...) add resetting reference to output:
wl_list_for_each(view, &compositor->view_list, link) {
      if (view->output == remove_output) {
           view->output = NULL;
           view->surface->output = NULL;
      }
}

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