warning using luaL_newlib

[Deepak Jois <deepak.jois@...>]

I have a line of code in my Lua module source which looks like this:

 luaL_newlib(L, functions);

'functions' is of type 'const luaL_Reg *'

The module compiles fine, but issues a warning:

‘implicit conversion from 'unsigned long' to 'int' changes value from
18446744073709551615 to -1’.

It doesnt appear to be happening anywhere in my code. How do I make
this go away?

Full output is below:

src/luaharfbuzz/class_utils.c:12:3: warning: implicit conversion from
'unsigned long' to
      'int' changes value from 18446744073709551615 to -1
[-Wconstant-conversion]
  luaL_newlib(L, functions);
  ^~~~~~~~~~~~~~~~~~~~~~~~~
/Users/deepak/.lua/include/lauxlib.h:112:26: note: expanded from macro
'luaL_newlib'
  (luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
                         ^~~~~~~~~~~~~~~~~~~~~
/Users/deepak/.lua/include/lauxlib.h:109:50: note: expanded from macro
      'luaL_newlibtable'
  lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1)
  ~~~~~~~~~~~~~~~       ~~~~~~~~~~~~~~~~~~~~~~~~~^~~
1 warning generated.