#0  js::EncapsulatedPtr<js::types::TypeObject, unsigned long>::operator-> (this=0x8) at ./gc/Barrier.h:168
#1  0x0000000041abbe3c in js::ObjectImpl::getClass (this=0x0) at ./vm/ObjectImpl.h:1190
#2  0x0000000041c5c345 in js::ObjectImpl::getJSClass (this=0x0) at ./vm/ObjectImpl-inl.h:315
#3  0x0000000041c5c325 in JS_GetClass (obj=0x0) at jsapi.cpp:3043
#4  0x000000004169d721 in gjs_object_from_g_object (context=0x57939400, gobj=0x63a0aa00) at gi/object.cpp:2057
#5  0x00000000416abae3 in gjs_value_from_g_value_internal (context=0x57939400, value_p=0x579ee238, gvalue=0x7ffffffec8d0, no_copy=0, signal_query=0x0, arg_n=0)
    at gi/value.cpp:739
#6  0x00000000416ab809 in gjs_value_from_g_value (context=0x57939400, value_p=0x579ee238, gvalue=0x7ffffffec8d0) at gi/value.cpp:911
#7  0x000000004169bbad in object_instance_get_prop (context=0x57939400, obj=..., id=..., value_p=...) at gi/object.cpp:306
#8  0x0000000041d5c1f0 in CallJSPropertyOp (cx=0x57939400,
    op=0x4169b9e0 <object_instance_get_prop(JSContext*, JS::Handle<JSObject*>, JS::Handle<long>, JS::MutableHandle<JS::Value>)>, receiver=..., id=..., vp=...)
    at ./jscntxtinlines.h:392
#9  GetPropertyHelperInline<1> (cx=0x57939400, obj=..., receiver=..., id=..., getHow=0, vp=...) at jsobj.cpp:3915
#10 js::GetPropertyHelper (cx=0x57939400, obj=..., id=..., getHow=0, vp=...) at jsobj.cpp:4007
#11 0x0000000041b4d39b in GetPropertyOperation (cx=0x57939400, fp=0x579ee1b8, script=..., pc=0x57bc6729 "5", lval=..., vp=...)
    at /wrkdirs/usr/ports/lang/spidermonkey24/work/mozjs-24.2.0/js/src/vm/Interpreter.cpp:284
#12 0x0000000041b36c22 in Interpret (cx=0x57939400, state=...) at /wrkdirs/usr/ports/lang/spidermonkey24/work/mozjs-24.2.0/js/src/vm/Interpreter.cpp:2137
#13 0x0000000041b2d69e in js::RunScript (cx=0x57939400, state=...) at /wrkdirs/usr/ports/lang/spidermonkey24/work/mozjs-24.2.0/js/src/vm/Interpreter.cpp:438
#14 0x0000000041b3ea3e in js::Invoke (cx=0x57939400, args=..., construct=js::NO_CONSTRUCT)
    at /wrkdirs/usr/ports/lang/spidermonkey24/work/mozjs-24.2.0/js/src/vm/Interpreter.cpp:500
#15 0x0000000041cdfca8 in js_fun_apply (cx=0x57939400, argc=2, vp=0x7fffffff1940) at jsfun.cpp:982
#16 0x0000000041b3e8de in CallJSNative (cx=0x57939400, native=0x41cdf530 <js_fun_apply(JSContext*, unsigned int, JS::Value*)>, args=...) at ./jscntxtinlines.h:321
#17 js::Invoke (cx=0x57939400, args=..., construct=js::NO_CONSTRUCT) at /wrkdirs/usr/ports/lang/spidermonkey24/work/mozjs-24.2.0/js/src/vm/Interpreter.cpp:481
#18 0x0000000041b3f109 in js::Invoke (cx=0x57939400, thisv=..., fval=..., argc=2, argv=0x7fffffff1cb0, rval=0x7fffffff1c58)
    at /wrkdirs/usr/ports/lang/spidermonkey24/work/mozjs-24.2.0/js/src/vm/Interpreter.cpp:531
#19 0x0000000041eea6dc in js::jit::DoCallFallback (cx=0x57939400, frame=0x7fffffff1d18, stub=0x5a48e720, argc=2, vp=0x7fffffff1ca0, res=...)
    at /wrkdirs/usr/ports/lang/spidermonkey24/work/mozjs-24.2.0/js/src/jit/BaselineIC.cpp:7007
#20 0x000000004076f416 in ?? ()
#21 0x0000000057939400 in ?? ()
#22 0x00007fffffff1c58 in ?? ()
#23 0x0000000057939400 in ?? ()
#24 0xfff9000000000000 in ?? ()
#25 0x000000004249ea10 in js::jit::DoCallNativeSetterInfo () from /usr/local/lib/libmozjs-24.so
#26 0x0000000059b348b0 in ?? ()
#27 0x0000000040777edf in ?? ()
#28 0x0000000000000502 in ?? ()
#29 0x00007fffffff1d18 in ?? ()
#30 0x000000005a48e720 in ?? ()
#31 0x0000000000000002 in ?? ()
#32 0x00007fffffff1ca0 in ?? ()
#33 0xfffb800059d378c0 in ?? ()
#34 0xfffb80005a90c780 in ?? ()
#35 0xfffb80005bd2dac0 in ?? ()
#36 0xfffa000000000009 in ?? ()
#37 0x00007fffffff1d60 in ?? ()
#38 0x000000005a48e720 in ?? ()
#39 0x0000000044a58588 in ?? ()
#40 0x0000000000000881 in ?? ()
#41 0xfffa000000000009 in ?? ()
#42 0xfffb80005bd2dac0 in ?? ()
#43 0xfffb80005a90c780 in ?? ()
#44 0xfffb800059d378c0 in ?? ()
#45 0xfffa000000000009 in ?? ()
#46 0xfff9000000000000 in ?? ()
#47 0xfffb80005a90d240 in ?? ()
#48 0x0000000059b31e80 in ?? ()
#49 0x00007fffffff1d80 in ?? ()
#50 0x0000000000000088 in ?? ()
#51 0x000000005a90d280 in ?? ()
#52 0x0000000041b211d5 in JSContext::mainThread (this=0xfffa000000000009) at ./jscntxt.h:1680
Backtrace stopped: previous frame inner to this frame (corrupt stack?)