error: incompatible types for redefinition of 'memcpy' when use -freestanding

[akbarfa49]

V version: V 0.2.4 dcdfdf4.b482c05 OS: linux, "ArcoLinux"

What did you do? run v with command v run filename.v -freestanding

module main
import net

fn main() {
    mut addr := net.AddrFamily.ip
    mut ln := net.listen_tcp(addr, ":8081") or {
        panic(err)
    }
    for {
    mut conn := ln.accept() or {
            panic(err)
        }
        go handle_connection(mut conn)
    }
}

fn handle_connection(mut c &net.TcpConn){
     hello := "hello world"
    res := "HTTP/1.1 200 OK\r\nContent-Length: " + hello.len.str() + "\r\nConnection: close\r\n\r\n" + hello
    c.write(res.bytes()) or {
    }
    c.close() or {

    }
}

What did you expect to see? no error

What did you see instead?

In file included from /tmp/v_1000/vblog.861675596276695499.tmp.c:903:
In file included from /usr/include/sys/un.h:37:
/usr/include/string.h:44: error: incompatible types for redefinition of 'memcpy'
builder error: 
==================
C error. This should never happen.

This is a compiler bug, please report it using `v bug file.v`.

[jeffbdavenport]

I get the same error when trying to use SDL2:

jeff@jeffs-machine $ v -freestanding -cg .
In file included from /tmp/v_1000/project.11051791327570436486.tmp.c:730:
In file included from /usr/include/SDL2/SDL.h:32:
In file included from /usr/include/SDL2/SDL_main.h:25:
In file included from /usr/include/SDL2/SDL_stdinc.h:43:
In file included from /usr/include/stdio.h:36:
thirdparty/tcc/lib/tcc/include/stdarg.h:5: warning: va_start redefined
In file included from /tmp/v_1000/project.11051791327570436486.tmp.c:730:
In file included from /usr/include/SDL2/SDL.h:32:
In file included from /usr/include/SDL2/SDL_main.h:25:
In file included from /usr/include/SDL2/SDL_stdinc.h:43:
In file included from /usr/include/stdio.h:36:
thirdparty/tcc/lib/tcc/include/stdarg.h:6: warning: va_arg redefined
In file included from /tmp/v_1000/project.11051791327570436486.tmp.c:730:
In file included from /usr/include/SDL2/SDL.h:32:
In file included from /usr/include/SDL2/SDL_main.h:25:
In file included from /usr/include/SDL2/SDL_stdinc.h:43:
In file included from /usr/include/stdio.h:36:
thirdparty/tcc/lib/tcc/include/stdarg.h:7: warning: va_copy redefined
In file included from /tmp/v_1000/project.11051791327570436486.tmp.c:730:
In file included from /usr/include/SDL2/SDL.h:32:
In file included from /usr/include/SDL2/SDL_main.h:25:
In file included from /usr/include/SDL2/SDL_stdinc.h:43:
In file included from /usr/include/stdio.h:36:
thirdparty/tcc/lib/tcc/include/stdarg.h:8: warning: va_end redefined
In file included from /tmp/v_1000/project.11051791327570436486.tmp.c:730:
In file included from /usr/include/SDL2/SDL.h:32:
In file included from /usr/include/SDL2/SDL_main.h:25:
In file included from /usr/include/SDL2/SDL_stdinc.h:66:
/usr/include/string.h:44: error: incompatible types for redefinition of 'memcpy'
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