v repl output weird memory content

[iacore]

Describe the bug

❯ v
 ____    ____ 
 \   \  /   /  |  Welcome to the V REPL (for help with V itself, type  exit , then run  v help ).
  \   \/   /   |  Note: the REPL is highly experimental. For best V experience, use a text editor, 
   \      /    |  save your code in a  main.v  file and execute:  v run main.v 
    \    /     |  V 0.4.10 ded45dc . Use  list  to see the accumulated program so far.
     \__/      |  Use Ctrl-C or  exit  to exit, or  help  to see other available commands.

>>> a := error("hi")
>>> typeof(a)
warning: use e.g. `typeof(expr).name` or `sum_type_instance.type_name()` instead
    6 | 
    7 | a := error("hi")
    8 | println(typeof(a))
      |         ~~~~~~
IError
>>> typeof(a)
 println(typeof(a))
warning: use e.g. `typeof(expr).name` or `sum_type_instance.type_name()` instead
    7 | a := error("hi")
    8 | println(typeof(a))
    9 | println(typeof(a))
      |         ~~~~~~
IError
IError
>>> typeof(a)
~~
   10 | println(typeof(a))
warning: use e.g. `typeof(expr).name` or `sum_type_instance.type_name()` instead
    8 | println(typeof(a))
    9 | println(typeof(a))
   10 | println(typeof(a))
      |         ~~~~~~
IError
IError
IError
>>> typeof(a)

   11 | println(typeof(a))
warning: use e.g. `typeof(expr).name` or `sum_type_instance.type_name()` instead
    9 | println(typeof(a))
   10 | println(typeof(a))
   11 | println(typeof(a))
      |         ~~~~~~
IError
IError
IError
IError
>>> typeof(a)
  12 | println(typeof(a))
warning: use e.g. `typeof(expr).name` or `sum_type_instance.type_name()` instead
   10 | println(typeof(a))
   11 | println(typeof(a))
   12 | println(typeof(a))
      |         ~~~~~~
IError
IError
IError
IError
IError
>>> typeof(a)
println(typeof(a))
warning: use e.g. `typeof(expr).name` or `sum_type_instance.type_name()` instead
   11 | println(typeof(a))
   12 | println(typeof(a))
   13 | println(typeof(a))
      |         ~~~~~~
IError
IError
IError
IError
IError
IError
>>> typeof(a)
(typeof(a))
warning: use e.g. `typeof(expr).name` or `sum_type_instance.type_name()` instead
   12 | println(typeof(a))
   13 | println(typeof(a))
   14 | println(typeof(a))
      |         ~~~~~~
IError
IError
IError
IError
IError
IError
IError
>>> typeof(a)
(a))
warning: use e.g. `typeof(expr).name` or `sum_type_instance.type_name()` instead
   13 | println(typeof(a))
   14 | println(typeof(a))
   15 | println(typeof(a))
      |         ~~~~~~
IError
IError
IError
IError
IError
IError
IError
IError
>>> typeof(a)
warning: use e.g. `typeof(expr).name` or `sum_type_instance.type_name()` instead
   14 | println(typeof(a))
   15 | println(typeof(a))
   16 | println(typeof(a))
      |         ~~~~~~
IError
IError
IError
IError
IError
IError
IError
IError
IError
>>> 

Reproduction Steps

1. Open v
2. Type in the following line by line.

a := error("hi")
typeof(a)
typeof(a)
typeof(a)
typeof(a)
typeof(a)
typeof(a)
typeof(a)

Expected Behavior

It should not output weird stuff.

Current Behavior

see above

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.10 ded45dc

Environment details (OS name and version, etc.)

V full version	V 0.4.10 ded45dc
OS	linux, "Artix Linux"
Processor	8 cpus, 64bit, little endian, Intel(R) Core(TM) i5-10300H CPU @ 2.50GHz
Memory	6.26GB/11.47GB
V executable	/home/user/Applications/v/v
V last modified time	2025-05-14 20:52:11
V home dir	OK, value: /home/user/Applications/v
VMODULES	OK, value: /home/user/.vmodules
VTMP	OK, value: /tmp/v_1000
Current working dir	OK, value: /home/user
Git version	git version 2.49.0
V git status	d6e79ca1-dirty
.git/config present	false
cc version	cc (GCC) 15.1.1 20250425
gcc version	gcc (GCC) 15.1.1 20250425
clang version	clang version 19.1.7
tcc version	tcc version 0.9.28rc 2025-02-13 HEAD@f8bd136d (x86_64 Linux)
tcc git status	N/A
emcc version	emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.39 (36f871819b566281d160470a1ec4515f379e9f77)
glibc version	ldd (GNU libc) 2.41

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