Error printing string u8_array

[JaRoLoz]

V version: V 0.4.9 6623ac2, press to see full `v doctor` output

V full version	V 0.4.9 6623ac2
OS	windows, Microsoft Windows 11 Pro 26100 64 bits
Processor	16 cpus, 64bit, little endian, AMD Ryzen 7 3700X 8-Core Processor
Memory	17.58GB/31.93GB
V executable	C:\bin\v\v.exe
V last modified time	2025-03-10 09:13:02
V home dir	OK, value: C:\bin\v
VMODULES	OK, value: C:\Users\Jaime.vmodules
VTMP	OK, value: C:\Users\Jaime\AppData\Local\Temp\v_0
Current working dir	OK, value: C:\Users\Jaime\Desktop\vs-code\v\jade_v
Git version	git version 2.47.1.windows.2
V git status	Error: fatal: not a git repository (or any of the parent directories): .git
.git/config present	false
cc version	N/A
gcc version	gcc (GCC) 13.2.0
clang version	N/A
msvc version	N/A
tcc version	tcc version 0.9.27 (x86_64 Windows)
tcc git status	N/A
emcc version	N/A
glibc version	N/A

What did you do?
./v -g -o vdbg cmd/v && ./vdbg .\src\main.v && C:\Users\Jaime\Desktop\vs-code\v\jade_v\src\main.exe

module main

fn main() {
    a := "dfgdfgfgd"
	println(a.u8_array())
}

What did you see?

================== C compilation error (from tcc): ==============
cc: C:/Users/Jaime/AppData/Local/Temp/v_0/main.01JP83YP1Q6RVGSGSCJ4DEKYN7.tmp.c:5385: warning: implicit declaration of function 'array_set'
cc: tcc: error: undefined symbol 'array_set'
...
cc: tcc: error: undefined symbol 'array_set'
(note: the original output was 4 lines long; it was truncated to its first 2 lines + the last line)
=================================================================
(You can pass `-cg`, or `-show-c-output` as well, to print all the C error messages).
builder error: 
==================
C error found. It should never happen, when compiling pure V code.
This is a V compiler bug, please report it using `v bug file.v`,
or goto https://github.com/vlang/v/issues/new/choose .
You can also use #help on Discord: https://discord.gg/vlang .

What did you expect to see?

The array of characters that make up the string printed in the stdout

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[huly-for-github]

Connected to Huly®: V_0.6-22324

[jorgeluismireles]

This works:

fn main() {
	assert '0xfe9a'.u8_array() == [u8(0xfe), 0x9a]
	assert 'dfgdfgfgd'.u8_array() == []
}

But commenting the first line we got the error:

fn main() {
	//assert '0xfe9a'.u8_array() == [u8(0xfe), 0x9a]
	assert 'dfgdfgfgd'.u8_array() == []
}

Can't run code. The server returned an error:
/tmp/v_60000/../../../../../../home/admin/v/vlib/builtin/string.v:675: warning: implicit declaration of function 'array_set'
/home/admin/v/thirdparty/tcc/lib/libgc.a: error: 'GC_noop1_ptr' defined twice
tcc: error: undefined symbol 'array_set'

[ChAoSUnItY]

I've concluded the cause of this error, currently u8_array is as expected marked used and its statements are also walked and marked, but for IndexExpr, it did not mark array get / set. I will later submit a patch for this.