luasocket lua 5.4.3 buffer fix err: luasocket receive() call fails on Lua 5.4.3 with "bad argument #1 to 'receive' (string expected, got light userdata)"

luasocket-scm-3.rockspec

-- see http://lua-users.org/lists/lua-l/2021-06/msg00084.html
-- https://github.com/diegonehab/luasocket/pull/334
-- https://github.com/diegonehab/luasocket/issues/331
-- install command:
-- cd /tmp/ && curl -LO https://gist.github.com/ttys3/31dbf88ee7d708294d8ae5b0a4954424/raw/c74afc3edc1a48c0f7e1c2c9992750301bbb74ff/luasocket-scm-3.rockspec
-- luarocks install ./luasocket-scm-3.rockspec

package = "LuaSocket"
version = "scm-3"
source = {
  url = "git://github.com/pkulchenko/luasocket.git"
  , branch="lua-543-aux-buffer-fix"
}
description = {
  summary = "Network support for the Lua language",
  detailed = [[
      LuaSocket is a Lua extension library that is composed by two parts: a C core
      that provides support for the TCP and UDP transport layers, and a set of Lua
      modules that add support for functionality commonly needed by applications
      that deal with the Internet.
   ]],
  homepage = "http://luaforge.net/projects/luasocket/",
  license = "MIT"
}
dependencies = {
  "lua >= 5.1"
}

local function make_plat(plat)
  local defines = {
    unix = {
      "LUASOCKET_DEBUG"
    },
    macosx = {
      "LUASOCKET_DEBUG",
      "UNIX_HAS_SUN_LEN"
    },
    win32 = {
      "LUASOCKET_DEBUG",
      "NDEBUG"
    },
    mingw32 = {
      "LUASOCKET_DEBUG",
      "LUASOCKET_INET_PTON",
      "WINVER=0x0501"
    }
  }
  local modules = {
    ["socket.core"] = {
      sources = {
        "src/luasocket.c"
        , "src/timeout.c"
        , "src/buffer.c"
        , "src/io.c"
        , "src/auxiliar.c"
        , "src/options.c"
        , "src/inet.c"
        , "src/except.c"
        , "src/select.c"
        , "src/tcp.c"
        , "src/udp.c"
        , "src/compat.c" },
      defines = defines[plat],
      incdir = "/src"
    },
    ["mime.core"] = {
      sources = { "src/mime.c", "src/compat.c" },
      defines = defines[plat],
      incdir = "/src"
    },
    ["socket.http"]    = "src/http.lua",
    ["socket.url"]     = "src/url.lua",
    ["socket.tp"]      = "src/tp.lua",
    ["socket.ftp"]     = "src/ftp.lua",
    ["socket.headers"] = "src/headers.lua",
    ["socket.smtp"]    = "src/smtp.lua",
    ltn12              = "src/ltn12.lua",
    socket             = "src/socket.lua",
    mime               = "src/mime.lua"
  }
  if plat == "unix"
    or plat == "macosx"
    or plat == "haiku"
  then
    modules["socket.core"].sources[#modules["socket.core"].sources+1] = "src/usocket.c"
    if plat == "haiku" then
      modules["socket.core"].libraries = {"network"}
    end
    modules["socket.unix"] = {
      sources = {
        "src/buffer.c"
        , "src/compat.c"
        , "src/auxiliar.c"
        , "src/options.c"
        , "src/timeout.c"
        , "src/io.c"
        , "src/usocket.c"
        , "src/unix.c"
        , "src/unixdgram.c"
        , "src/unixstream.c" },
      defines = defines[plat],
      incdir = "/src"
    }
    modules["socket.serial"] = {
      sources = {
        "src/buffer.c"
        , "src/compat.c"
        , "src/auxiliar.c"
        , "src/options.c"
        , "src/timeout.c"
        , "src/io.c"
        , "src/usocket.c"
        , "src/serial.c" },
      defines = defines[plat],
      incdir = "/src"
    }
  end
  if  plat == "win32"
    or plat == "mingw32"
  then
    modules["socket.core"].sources[#modules["socket.core"].sources+1] = "src/wsocket.c"
    modules["socket.core"].libraries = { "ws2_32" }
  end
  return { modules = modules }
end

build = {
  type = "builtin",
  platforms = {
    unix = make_plat("unix"),
    macosx = make_plat("macosx"),
    haiku = make_plat("haiku"),
    win32 = make_plat("win32"),
    mingw32 = make_plat("mingw32")
  },
  copy_directories = {
    "doc"
    , "samples"
    , "etc"
    , "test" }
}