Resource loading crashes editor 3.2.4 beta 4

[DarkMessiah]

Godot version:

3.2.4 beta 2/3/4

OS/device including version:

Windows 10 x64

Issue description:

Godot crashed or print error when try load Resource with Reference data inside.

Works fine in 3.2.3 and 3.2.4 beta 1

Steps to reproduce:

1. Create Reference class with string variable
2. Create Resource class to store created Reference
3. Create Resource with data and try load it

Minimal reproduction project:

resource_issue.zip

Maybe regression after #41931

[akien-mga]

Confirmed on 873d193ff.

pure virtual method called
terminate called without an active exception

Thread 1 "godot-3.2" received signal SIGABRT, Aborted.
0x00007ffff7768510 in raise () from /lib64/libc.so.6

(gdb) bt
#0  0x00007ffff7768510 in raise () from /lib64/libc.so.6
#1  0x00007ffff7753526 in abort () from /lib64/libc.so.6
#2  0x00007ffff7ade81c in __gnu_cxx::__verbose_terminate_handler() [clone .cold] () from /lib64/libstdc++.so.6
#3  0x00007ffff7ae99a6 in __cxxabiv1::__terminate(void (*)()) () from /lib64/libstdc++.so.6
#4  0x00007ffff7ae9a11 in std::terminate() () from /lib64/libstdc++.so.6
#5  0x00007ffff7aea6cf in __cxa_pure_virtual () from /lib64/libstdc++.so.6
#6  0x000000000381ba6d in Object::set (this=0x6a30890, p_name=..., p_value=..., r_valid=0x0) at core/object.cpp:414
#7  0x0000000003917c09 in VariantParser::parse_value (token=..., value=..., p_stream=0x6a79310, line=@0x6a79388: 8, r_err_str=..., p_res_parser=0x6a793a8) at core/variant_parser.cpp:788
#8  0x000000000391ad4d in VariantParser::_parse_dictionary (object=..., p_stream=0x6a79310, line=@0x6a79388: 8, r_err_str=..., p_res_parser=0x6a793a8) at core/variant_parser.cpp:1327
#9  0x0000000003915bc0 in VariantParser::parse_value (token=..., value=..., p_stream=0x6a79310, line=@0x6a79388: 8, r_err_str=..., p_res_parser=0x6a793a8) at core/variant_parser.cpp:491
#10 0x000000000391b7de in VariantParser::parse_tag_assign_eof (p_stream=0x6a79310, line=@0x6a79388: 8, r_err_str=..., r_tag=..., r_assign=..., r_value=..., p_res_parser=0x6a793a8, p_simple_tag=false)
    at core/variant_parser.cpp:1506
#11 0x000000000323bbea in ResourceInteractiveLoaderText::poll (this=0x6a791d0) at scene/resources/resource_format_text.cpp:588
#12 0x0000000003a28824 in ResourceFormatLoader::load (this=0x6214a00, p_path=..., p_original_path=..., r_error=0x7fffffffb344) at core/io/resource_loader.cpp:197
#13 0x0000000003a2a12f in ResourceLoader::_load (p_path=..., p_original_path=..., p_type_hint=..., p_no_cache=false, r_error=0x7fffffffb344) at core/io/resource_loader.cpp:270
#14 0x0000000003a2ad31 in ResourceLoader::load (p_path=..., p_type_hint=..., p_no_cache=false, r_error=0x7fffffffb344) at core/io/resource_loader.cpp:402
#15 0x0000000003a5686b in _ResourceLoader::load (this=0x54f0550, p_path=..., p_type_hint=..., p_no_cache=false) at core/bind/core_bind.cpp:74
#16 0x0000000003ab71d6 in MethodBind3R<Ref<Resource>, String const&, String const&, bool>::call (this=0x54f0ab0, p_object=0x54f0550, p_args=0x7fffffffb650, p_arg_count=1, r_error=...)
    at ./core/method_bind.gen.inc:2505
#17 0x000000000381e40a in Object::call (this=0x54f0550, p_method=..., p_args=0x7fffffffb650, p_argcount=1, r_error=...) at core/object.cpp:919
#18 0x00000000038aba76 in Variant::call_ptr (this=0x685f1f8, p_method=..., p_args=0x7fffffffb650, p_argcount=1, r_ret=0x7fffffffb620, r_error=...) at core/variant_call.cpp:1129
#19 0x00000000014b1844 in GDScriptFunction::call (this=0x6a1bec0, p_instance=0x6a27060, p_args=0x0, p_argcount=0, r_err=..., p_state=0x0) at modules/gdscript/gdscript_function.cpp:1088
#20 0x0000000001459678 in GDScriptInstance::_ml_call_reversed (this=0x6a27060, sptr=0x6a69ff0, p_method=..., p_args=0x0, p_argcount=0) at modules/gdscript/gdscript.cpp:1269
#21 0x00000000014596ea in GDScriptInstance::call_multilevel_reversed (this=0x6a27060, p_method=..., p_args=0x0, p_argcount=0) at modules/gdscript/gdscript.cpp:1276
#22 0x0000000002a107a2 in Node::_notification (this=0x6a70de0, p_notification=13) at scene/main/node.cpp:149
#23 0x000000000141f016 in Node::_notificationv (this=0x6a70de0, p_notification=13, p_reversed=false) at ./scene/main/node.h:46
#24 0x000000000141f63b in CanvasItem::_notificationv (this=0x6a70de0, p_notification=13, p_reversed=false) at ./scene/2d/canvas_item.h:166
#25 0x0000000002e83b9b in Node2D::_notificationv (this=0x6a70de0, p_notification=13, p_reversed=false) at ./scene/2d/node_2d.h:38
#26 0x000000000381e527 in Object::notification (this=0x6a70de0, p_notification=13, p_reversed=false) at core/object.cpp:929
#27 0x0000000002a10b9d in Node::_propagate_ready (this=0x6a70de0) at scene/main/node.cpp:196
#28 0x0000000002a10b24 in Node::_propagate_ready (this=0x68a9020) at scene/main/node.cpp:188
#29 0x0000000002a1cbb4 in Node::_set_tree (this=0x68a9020, p_tree=0x68a6e20) at scene/main/node.cpp:2571
#30 0x0000000002a4069c in SceneTree::init (this=0x68a6e20) at scene/main/scene_tree.cpp:463
#31 0x0000000001398861 in OS_X11::run (this=0x7fffffffcde0) at platform/x11/os_x11.cpp:3595
#32 0x000000000138752c in main (argc=1, argv=0x7fffffffd638) at platform/x11/godot_x11.cpp:56