[Webkit-unassigned] [Bug 167784] New: [GTK] (WebKitWebProcess:26855): GLib-GObject-WARNING **: instance with invalid (NULL) class pointer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=167784

            Bug ID: 167784
           Summary: [GTK] (WebKitWebProcess:26855): GLib-GObject-WARNING
                    **: instance with invalid (NULL) class pointer
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: agomez at igalia.com
                CC: bugs-noreply at webkitgtk.org

Created attachment 300512
  --> https://bugs.webkit.org/attachment.cgi?id=300512&action=review
BT from gdb for the WebProcess

Epiphany 3.22.5 and WebKit 2.15.4.

I'm running Epiphany with the dconf key:

"process-model" = "shared-secondary-process"

And the env variable:

"export G_DEBUG=fatal-warnings"

The compilation was done with CMake args:

'-DENABLE_THREADED_COMPOSITOR=OFF -DPORT=GTK -DCMAKE_BUILD_TYPE=Release -DENABLE_MINIBROWSER=ON -DCMAKE_C_FLAGS_RELEASE="-O0 -g -DNDEBUG  -DG_DISABLE_CAST_CHECKS" -DCMAKE_CXX_FLAGS_RELEASE="-O0 -g -DNDEBUG -DG_DISABLE_CAST_CHECKS"'

After visiting several pages, eventually, the WebProcess hits a Warning.

This bug is not reproducible in a predictable way.

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