C Error when running mawfig's Generics example

[damywise]

Describe the bug

Code 1: https://vosca.dev/p/122810bb42
Code 2: https://vosca.dev/p/71d8a80124

struct Wrapped[T] {
	value T
}

fn (w Wrapped[T]) double() Wrapped[T] {
	return Wrapped[T]{w.value * 2}
}

fn make_wrapped[T](value T) Wrapped[T] {
	return Wrapped[T]{value}
}

fn main() {
	println(make_wrapped('str'))
}

struct MyStruct<T> {
    val T
}

struct Foo {
    x int
}

struct MyStruct_T_main__Foo {
    bla string
}

fn main() {
    x := MyStruct<Foo> { Foo { 0 } }
    y := MyStruct_T_main__Foo { "" }
    println(x)
    println(y)
}

Expected Behavior

No C error

Current Behavior

Output:

/tmp/v_60000/../../../../../../box/code.v:6: error: invalid operand types for binary operation
/tmp/v_60000/../../../../../../box/code.v:6: error: invalid aggregate type for register load
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

Exited with error status 1

/tmp/v_0/code.tmp.c:1512: error: field not found: val
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

Reproduction Steps

open the code url

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.3.3 fc4c431.adcd16b

Environment details (OS name and version, etc.)

V full version: V 0.3.3 fc4c431.adcd16b
OS: linux, Ubuntu 22.04.2 LTS
Processor: 2 cpus, 64bit, little endian, Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz

getwd: /home/pmakhnev/playground
vexe: /home/pmakhnev/v/v
vexe mtime: 2023-04-18 15:52:07

vroot: OK, value: /home/pmakhnev/v
VMODULES: OK, value: /root/.vmodules
VTMP: OK, value: /tmp/v_0

Git version: git version 2.34.1
Git vroot status: weekly.2023.15-38-gadcd16b1
.git/config present: true

CC version: cc (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0
thirdparty/tcc status: thirdparty-linux-amd64 12f392c3

[felipensp]

I've added a PR to validate the string operation for the first case. In the last one the we have a name collision, causing the problem.