[Webkit-unassigned] [Bug 168107] New: [GTK] GLib-GObject-CRITICAL **: g_signal_emit_by_name: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=168107

            Bug ID: 168107
           Summary: [GTK] GLib-GObject-CRITICAL **: g_signal_emit_by_name:
                    assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
    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 301140
  --> https://bugs.webkit.org/attachment.cgi?id=301140&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-criticals"

The compilation was done with CMake args:

'-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 Critical.

This bug is not reproducible in a predictable way.

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