trace of /usr/pkg/lib/firefox/plugin-container from firefox 71.0 on executing adobe-flash-layer on NetBSD/i386 8.1

plugin-container-gdb.log

% gdb /usr/pkg/lib/firefox/plugin-container plugin-container.core
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warning: ../../../../gdbscripts/bdump: No such file or directory

warning: ../../../../gdbscripts/cpus: No such file or directory

warning: ../../../../gdbscripts/kdump: No such file or directory

warning: ../../../../gdbscripts/lwps: No such file or directory

warning: ../../../../gdbscripts/msgbuf: No such file or directory

warning: ../../../../gdbscripts/pgrpdump: No such file or directory

warning: ../../../../gdbscripts/procs: No such file or directory

warning: ../../../../gdbscripts/vchain: No such file or directory

warning: ../../../../gdbscripts/vdump: No such file or directory
Reading symbols from /usr/pkg/lib/firefox/plugin-container...
(No debugging symbols found in /usr/pkg/lib/firefox/plugin-container)
[New process 1]
[New process 2]
Core was generated by `plugin-container'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0xae5b25c8 in mozilla::dom::danger::GetJSContext() ()
   from /usr/pkg/lib/firefox/libxul.so
[Current thread is 1 (process 1)]
(gdb) bt
#0  0xae5b25c8 in mozilla::dom::danger::GetJSContext() ()
   from /usr/pkg/lib/firefox/libxul.so
#1  0xacb8a669 in mozilla::ipc::MessageChannel::DispatchMessage(IPC::Message&&)
    () from /usr/pkg/lib/firefox/libxul.so
#2  0xacb8adf0 in mozilla::ipc::MessageChannel::RunMessage(mozilla::ipc::MessageChannel::MessageTask&) () from /usr/pkg/lib/firefox/libxul.so
#3  0xacb8b14f in mozilla::ipc::MessageChannel::MessageTask::Run() ()
   from /usr/pkg/lib/firefox/libxul.so
#4  0xacb5b857 in MessageLoop::DoWork() () from /usr/pkg/lib/firefox/libxul.so
#5  0xacb55cec in (anonymous namespace)::WorkSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/pkg/lib/firefox/libxul.so
#6  0xa99f6889 in g_main_context_dispatch () from /usr/pkg/lib/libglib-2.0.so.0
#7  0xa99f6ac5 in g_main_context_iterate.isra ()
   from /usr/pkg/lib/libglib-2.0.so.0
#8  0xa99f6ba2 in g_main_context_iteration ()
   from /usr/pkg/lib/libglib-2.0.so.0
#9  0xacb558c6 in base::MessagePumpForUI::RunWithDispatcher(base::MessagePump::Delegate*, base::MessagePumpForUI::Dispatcher*) ()
   from /usr/pkg/lib/firefox/libxul.so
#10 0xacb55b91 in base::MessagePumpForUI::Run(base::MessagePump::Delegate*) ()
   from /usr/pkg/lib/firefox/libxul.so
#11 0xacb5ae5e in MessageLoop::Run() () from /usr/pkg/lib/firefox/libxul.so
#12 0xaf47aa63 in XRE_InitChildProcess(int, char**, XREChildData const*) ()
   from /usr/pkg/lib/firefox/libxul.so
#13 0xaf4813d1 in mozilla::BootstrapImpl::XRE_InitChildProcess(int, char**, XREChildData const*) () from /usr/pkg/lib/firefox/libxul.so
#14 0x00e97ed8 in main ()
(gdb)