vweb: use of float types as function parameters leads to C error (invalid aggregate type)

[Apocryphon-X]

V Doctor:

OS: linux, Ubuntu 20.04.4 LTS (WSL 2)
Processor: 12 cpus, 64bit, little endian, 11th Gen Intel(R) Core(TM) i5-11400H @ 2.70GHz
CC version: cc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0

getwd: /home/apocryphon/tests/v
vmodules: /home/apocryphon/.vmodules
vroot: /home/apocryphon/packages/v
vexe: /home/apocryphon/packages/v/v
vexe mtime: 2022-07-25 17:58:05
is vroot writable: true
is vmodules writable: true
V full version: V 0.3.0 d6de533.f1ebfb2

Git version: git version 2.25.1
Git vroot status: weekly.2022.29-64-gf1ebfb2d
.git/config present: true
thirdparty/tcc status: thirdparty-linux-amd64 827f7452

What did you do?

import vweb

struct App {
    vweb.Context
}

fn main() {
	vweb.run(&App{}, 8080)
}

['/sum/:num_a/:num_b']
fn (mut app App) sum(num_a f32, num_b f32) vweb.Result {
	return app.text('The sum is: ${num_a + num_b}')
}

This happens with f64 too.

What did you expect to see?

No errors.

What did you see instead?

Same error as #14428.

/tmp/v_1000/vweb_ex.11038284845365864003.tmp.c:29995: 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

[Apocryphon-X]

Additional output with v -cg -prod vweb_ex.v:

/tmp/v_1000/vweb_ex.7651033178685271020.tmp.c: In function ‘vweb__handle_conn_T_main__App’:
/tmp/v_1000/vweb_ex.7651033178685271020.tmp.c:29969:48: error: incompatible type for argument 2 of ‘main__App_sum’
29969 |        main__App_sum(app, ((string*)args.data) [0] , ((string*)args.data) [1] );
      |                           ~~~~~~~~~~~~~~~~~~~~~^~~
      |                                                |
      |                                                string {aka struct string}
/tmp/v_1000/vweb_ex.7651033178685271020.tmp.c:4658:48: note: expected ‘f32’ {aka ‘float’} but argument is of type ‘string’ {aka ‘struct string’}
 4658 | vweb__Result main__App_sum(main__App* app, f32 num_a, f32 num_b);
      |                                            ~~~~^~~~~
/tmp/v_1000/vweb_ex.7651033178685271020.tmp.c:29969:75: error: incompatible type for argument 3 of ‘main__App_sum’
29969 |        main__App_sum(app, ((string*)args.data) [0] , ((string*)args.data) [1] );
      |                                                      ~~~~~~~~~~~~~~~~~~~~~^~~
      |                                                                           |
      |                                                                           string {aka struct string}
/tmp/v_1000/vweb_ex.7651033178685271020.tmp.c:4658:59: note: expected ‘f32’ {aka ‘float’} but argument is of type ‘string’ {aka ‘struct string’}
 4658 | vweb__Result main__App_sum(main__App* app, f32 num_a, f32 num_b);
      |                                                       ~~~~^~~~~
/tmp/v_1000/vweb_ex.7651033178685271020.tmp.c:30020:54: error: incompatible type for argument 2 of ‘main__App_sum’
30020 |       main__App_sum(app, ((string*)method_args.data) [0] , ((string*)method_args.data) [1] );
      |                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
      |                                                      |
      |                                                      string {aka struct string}
/tmp/v_1000/vweb_ex.7651033178685271020.tmp.c:4658:48: note: expected ‘f32’ {aka ‘float’} but argument is of type ‘string’ {aka ‘struct string’}
 4658 | vweb__Result main__App_sum(main__App* app, f32 num_a, f32 num_b);
      |                                            ~~~~^~~~~
/tmp/v_1000/vweb_ex.7651033178685271020.tmp.c:30020:88: error: incompatible type for argument 3 of ‘main__App_sum’
30020 |       main__App_sum(app, ((string*)method_args.data) [0] , ((string*)method_args.data) [1] );
      |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
      |                                                                                        |
      |                                                                                        string {aka struct string}
/tmp/v_1000/vweb_ex.7651033178685271020.tmp.c:4658:59: note: expected ‘f32’ {aka ‘float’} but argument is of type ‘string’ {aka ‘struct string’}
 4658 | vweb__Result main__App_sum(main__App* app, f32 num_a, f32 num_b);
      |                                                       ~~~~^~~~~