Compilation error when using omitempty with params struct

[AoJ]

V doctor:

V full version: V 0.4.4 c9933da.4f742ad
OS: macos, macOS, 14.3.1, 23D60
Processor: 8 cpus, 64bit, little endian, Apple M2

getwd: /tmp/v_bug
vexe: /opt/homebrew/Cellar/vlang/0.4.4/libexec/v
vexe mtime: 2024-02-15 12:11:23

vroot: OK, value: /opt/homebrew/Cellar/vlang/0.4.4/libexec
VMODULES: OK, value: /tmp/v/.vmodules
VTMP: OK, value: /tmp/v_501

Git version: git version 2.39.3 (Apple Git-145)
Git vroot status: weekly.2024.07-21-g4f742ad1
.git/config present: true

CC version: Apple clang version 15.0.0 (clang-1500.1.0.2.5)
thirdparty/tcc status: thirdparty-macos-arm64 5c1d002f

Note: the same problem exists on Linux.

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

import json


@[params]
struct SomeParams {
    name string
    sub_struct struct {
        id string
    } @[omitempty]
}


pub fn some_fn(p SomeParams) string {
    return json.encode(p)
}

What did you expect to see?

Compile it without a error "C error"

What did you see instead?

==================
/tmp/v_501/bug.01HPPAW2HJG5KEPPE3SVP17KNX.tmp.c:2247:53: error: expected expression
        if (!main___VAnonStruct1_struct_eq(val.sub_struct, {.id = (string){.str=(byteptr)"", .is_lit=1},}))
                                                           ^
1 error generated.
...
==================
(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

You can also use #help on Discord: https://discord.gg/vlang

Note

You can use the 👍 reaction to increase the issue's priority for developers.

Please note that only the 👍 reaction to the issue itself counts as a vote.
Other reactions and those to comments will not be taken into account.