allow "unwrapped Option cannot be used in an infix expression"

[Le0Developer]

Describe the feature

This currently produces a checker error:

fn main() {
    x := []?int{len: 5, init: 1}

    println(x[0] == x[1])
}

(error: unwrapped Option cannot be used in an infix expression)

Use Case

Came up in Advent of Code day 9 when dealing with a []?int{}.

Proposed Solution

Fix the underlying cgen issue and then remove the checker error.

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

Version used

V 0.4.8 602b097.e32e9f7

Environment details (OS name and version, etc.)

V full version: V 0.4.8 602b097.e32e9f7
OS: macos, macOS, 15.1.1, 24B2091
Processor: 10 cpus, 64bit, little endian, Apple M4

getwd: /Users/leodev
vexe: /Users/leodev/p/v/v/v
vexe mtime: 2024-12-07 15:07:56

vroot: OK, value: /Users/leodev/p/v/v
VMODULES: OK, value: /Users/leodev/.vmodules
VTMP: OK, value: /tmp/v_501

Git version: git version 2.47.0
Git vroot status: weekly.2024.49-33-ge32e9f70 (10 commit(s) behind V master)
.git/config present: true

CC version: Apple clang version 16.0.0 (clang-1600.0.26.4)
emcc version: N/A
thirdparty/tcc status: thirdparty-macos-arm64 713692d4

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_{Huly®: V_0.6-21545}

[Le0Developer]

For context, this is my AOC code which previously used []?int{} but now uses -1 as a magic null-value instead of options.
Linked is the line which triggered this checker error (going backwards in the list trying to find the first mismatching value)
https://github.com/vlang/adventofcode/blob/main/2024/09/leodev.v#L52