`vlib/v/tests/consts/const_fixed_array_return_unresolved_test.v` fails to compile with `-no-skip-unused`

[dy-tea]

Describe the bug

Code: https://play.vlang.io/p/14b1a1e392

Compiles fine without -no-skip-unused but has a cgen issue with -no-skip-unused.

fn get_chunkmap_at_coords(mapp []Chunk) [chunk_size][chunk_size]u64 {
	return mapp[0].id_map
}

const chunk_size = 100

struct Chunk {
	id_map [chunk_size][chunk_size]u64
}

fn test_main() {
	t := Chunk{}
	assert t.id_map[0].len == 100
	assert t.id_map.len == 100
}

Reproduction Steps

See test.

Expected Behavior

Should compile.

Current Behavior

Output:

/tmp/v_60000/code.01KEJ3GCWSSX56TFQRBHVDR93G.tmp.c:2226: warning: type defaults to int
/tmp/v_60000/code.01KEJ3GCWSSX56TFQRBHVDR93G.tmp.c:2226: error: ';' expected (got "main__get_chunkmap_at_coords")
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 .
Exited with error status 1

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.5.0 7b22bae.0e098a9

Environment details (OS name and version, etc.)

|V full version      |V 0.5.0 7b22bae12ea108ee51a457a9dd99935ad0c88dc1.0e098a9
|:-------------------|:-------------------
|OS                  |linux, Debian GNU/Linux 12 (bookworm) (VM)
|Processor           |2 cpus, 64bit, little endian, Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz
|Memory              |1.07GB/2.02GB
|                    |
|V executable        |/home/admin/v/v
|V last modified time|2026-01-09 18:25:36
|                    |
|V home dir          |OK, value: /home/admin/v
|VMODULES            |OK, value: .vmodules
|VTMP                |OK, value: /tmp/v_0
|Current working dir |OK, value: /home/admin/playground
|                    |
|Git version         |git version 2.39.5
|V git status        |N/A
|.git/config present |true
|                    |
|cc version          |cc (Debian 12.2.0-14+deb12u1) 12.2.0
|gcc version         |gcc (Debian 12.2.0-14+deb12u1) 12.2.0
|clang version       |Debian clang version 14.0.6
|tcc version         |tcc version 0.9.28rc 2025-02-13 HEAD@f8bd136d (x86_64 Linux)
|tcc git status      |Error: fatal: detected dubious ownership in repository at '/home/admin/v/thirdparty/tcc'
To add an exception for this directory, call:

	git config --global --add safe.directory /home/admin/v/thirdparty/tcc
 Error: fatal: detected dubious ownership in repository at '/home/admin/v/thirdparty/tcc'
To add an exception for this directory, call:

	git config --global --add safe.directory /home/admin/v/thirdparty/tcc

|emcc version        |N/A
|glibc version       |ldd (Debian GLIBC 2.36-9+deb12u10) 2.36

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