C error when casting index and returning a pointer on a fixed length array

[weshardee]

V doctor:

OS: macos, macOS, 11.6, 20G165
Processor: 16 cpus, 64bit, little endian, Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
CC version: Apple clang version 13.0.0 (clang-1300.0.29.3)

getwd: /Users/wes/dev/test-v
vmodules: /Users/wes/.vmodules
vroot: /Users/wes/dev/v
vexe: /Users/wes/dev/v/v
vexe mtime: 2022-01-10 16:03:41
is vroot writable: true
is vmodules writable: true
V full version: V 0.2.4 65eb383

Git version: git version 2.30.1 (Apple Git-130)
Git vroot status: weekly.2022.02-2-g65eb383c
.git/config present: true
thirdparty/tcc status: thirdparty-macos-amd64 93fa86be

What did you do?
v -g -o vdbg cmd/v && vdbg main.v

type Entity = int

struct Component {
	vals [256]int
}

fn (c Component) get_broken(e Entity) &int {
	return &c.vals[int(e)]
}

What did you expect to see?

successful compilation

What did you see instead?

==================
   ^~~~~~~~~~~~~~~
/tmp/v_501/main.14493015409709803414.tmp.c:10882:48: error: too few arguments to function call, expected 2, have 1
        int* _t1 = &(*(c)).vals[v_fixed_index((int)(e)), 256)];
                                ~~~~~~~~~~~~~         ^
/tmp/v_501/main.14493015409709803414.tmp.c:6281:28: note: 'v_fixed_index' declared here
inline VV_LOCAL_SYMBOL int v_fixed_index(int i, int len) {
                           ^
/tmp/v_501/main.14493015409709803414.tmp.c:10882:54: error: expected ']'
        int* _t1 = &(*(c)).vals[v_fixed_index((int)(e)), 256)];
                                                            ^
/tmp/v_501/main.14493015409709803414.tmp.c:10882:25: note: to match this '['
        int* _t1 = &(*(c)).vals[v_fixed_index((int)(e)), 256)];
...
==================
(Use `v -cg` to print the entire error message)

builder error: 
==================
C error. This should never happen.

This is a compiler bug, please report it using `v bug file.v`.

https://github.com/vlang/v/issues/new/choose

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