[vim9] Segmentation fault when iterating over list of objects inside a function

[lifepillar]

Steps to reproduce

Source this script:

vim9script

class Foo
  def Add()
  enddef
endclass


def ProcessList(fooList: list<Foo>)
  for foo in fooList
    foo.Add()
  endfor
enddef

var l: list<Foo> = [Foo.new()]

ProcessList(l)

Vim should segfault. Possibly related to #11822.

Expected behaviour

The script should compile and run just fine.

Version of Vim

9.0.1201

Environment

macOS 13.1
Apple Terminal
xterm-256color
ZSH 5.8.1

Logs and stack traces

No response

[lifepillar]

Sorry, forgot to attach a stack trace. The crash seems to happen inside copy_type():

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	       0x195391bfc __kill + 8
1   vim                           	       0x102e19524 may_core_dump + 64
2   vim                           	       0x102e193c8 mch_exit + 204
3   vim                           	       0x102feae9c getout + 1008
4   vim                           	       0x102dcddfc preserve_exit + 212
5   vim                           	       0x102e1ef9c deathtrap + 596
6   libsystem_platform.dylib      	       0x1953f72a4 _sigtramp + 56
7   vim                           	       0x102f88f8c copy_type + 132
8   vim                           	       0x102f8da9c copy_type_deep_rec + 156
9   vim                           	       0x102f8db30 copy_type_deep_rec + 304
10  vim                           	       0x102f8db30 copy_type_deep_rec + 304
11  vim                           	       0x102f8db30 copy_type_deep_rec + 304
12  vim                           	       0x102f8d9e0 copy_type_deep + 56
13  vim                           	       0x102f8a100 typval2type_int + 796
14  vim                           	       0x102f89d6c typval2type + 72
15  vim                           	       0x102f8b070 check_typval_type + 204
16  vim                           	       0x102f8af98 check_typval_arg_type + 72
17  vim                           	       0x102f6e64c call_def_function + 1720
18  vim                           	       0x102f46378 call_user_func + 564
19  vim                           	       0x102f460c0 call_user_func_check + 332
20  vim                           	       0x102f44a74 call_func + 1808
21  vim                           	       0x102f44220 get_func_tv + 476
22  vim                           	       0x102cf0454 eval_func + 396
23  vim                           	       0x102cefcec eval9 + 2160
24  vim                           	       0x102cf2054 eval8 + 512
25  vim                           	       0x102cf19cc eval7 + 52
26  vim                           	       0x102cf1118 eval6 + 64
27  vim                           	       0x102cf0d74 eval5 + 40
28  vim                           	       0x102cf0990 eval4 + 68
29  vim                           	       0x102cf0528 eval3 + 44
30  vim                           	       0x102ce804c eval2 + 44
31  vim                           	       0x102ce2280 eval1 + 64
32  vim                           	       0x102ce7d6c eval0_retarg + 168
33  vim                           	       0x102ce189c eval0 + 52
34  vim                           	       0x102d38e0c ex_eval + 140
35  vim                           	       0x102d260b4 do_one_cmd + 6948
36  vim                           	       0x102d23498 do_cmdline + 2736
37  vim                           	       0x102e9cc18 do_source_ext + 2904
38  vim                           	       0x102e9c0b4 do_source + 56
39  vim                           	       0x102e9bf4c cmd_source + 496
40  vim                           	       0x102e9bd50 ex_source + 32
41  vim                           	       0x102d260b4 do_one_cmd + 6948
42  vim                           	       0x102d23498 do_cmdline + 2736
43  vim                           	       0x102deb7e8 nv_colon + 420
44  vim                           	       0x102de38d4 normal_cmd + 2564
45  vim                           	       0x102feb9d4 main_loop + 2408
46  vim                           	       0x102fea09c vim_main2 + 2648
47  vim                           	       0x102fe7364 main + 1416
48  dyld                          	       0x19509fe50 start + 2544