compiling with -prod (msvc) causes c error

[daansystems]

V doctor:

V full version: V 0.4.7 18eee34.e974460
OS: windows, Microsoft Windows 11 Pro v22631 64-bit
Processor: 24 cpus, 64bit, little endian, 

getwd: D:\vbug
vexe: C:\v\v.exe
vexe mtime: 2024-09-24 19:27:43

vroot: OK, value: C:\v
VMODULES: OK, value: C:\Users\info\.vmodules
VTMP: OK, value: C:\Users\info\AppData\Local\Temp\v_0

Git version: git version 2.42.0.windows.2
Git vroot status: weekly.2024.39-13-g4248fc55-dirty
.git/config present: true

CC version: Error: 'cc' is not recognized as an internal or external command,

operable program or batch file.


thirdparty/tcc status: thirdparty-windows-amd64 b425ac82

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

module main

pub type Mat4 = [16]f32

interface IGameObject {
	world_transform() Mat4
}

fn main() {}

What did you expect to see?

prod version compiles correctly

What did you see instead?

D:\vbug>v -prod .
Microsoft (R) C/C++ Optimizing Compiler Version 19.41.34120 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

cl -w /we4013 /volatile:ms /Fo"C:\Users\info\AppData\Local\Temp\v_0\vbug.01J8N3KKN61F7E84076S1B35ZD.tmp.c.obj" /F 16777216 /O2 /MD /DNDEBUG "C:\Users\info\AppData\Local\Temp\v_0\vbug.01J8N3KKN61F7E84076S1B35ZD.tmp.c" -I "C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\ucrt" -I "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.41.34120\include" -I "C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\um" -I "C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared" /DGC_NOT_DLL=1 /DGC_WIN32_THREADS=1 /DGC_THREADS=1 -I "C:\v\thirdparty\libatomic_ops" -I "C:\v\thirdparty\libgc\include" "C:\v/thirdparty/libatomic_ops/atomic_ops.obj" "C:\v/thirdparty/libgc/gc.obj" ucrtd.lib kernel32.lib user32.lib advapi32.lib ws2_32.lib dbghelp.lib user32.lib /link /NOLOGO /OUT:"D:\vbug\vbug.exe" /LIBPATH:"C:\Program Files (x86)\Windows Kits\10\Lib\10.0.22621.0\ucrt\X64" /LIBPATH:"C:\Program Files (x86)\Windows Kits\10\Lib\10.0.22621.0\um\X64" /LIBPATH:"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.41.34120\lib\X64" /DEBUG:FULL /INCREMENTAL:NO /OPT:REF /OPT:ICF

vbug.01J8N3KKN61F7E84076S1B35ZD.tmp.c
C:\Users\info\AppData\Local\Temp\v_0\vbug.01J8N3KKN61F7E84076S1B35ZD.tmp.c(2263): error C2090: function returns array   

builder error: msvc error

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[felipensp]

Reproducible too with clang-17.

================== C compilation error (from clang-17): ==============
cc: /tmp/v_1000/bug.01J8NZNFDJ0MMB7D6VJV2WKQK2.tmp.c:2178:39: error: function cannot return array type 'main__Mat4' (aka 'float[16]')
cc:         main__Mat4 (*_method_world_transform)(void* _);
cc:                                              ^
cc: 1 error generated.