Function rlua::ffi::lua54::lua::lua_setallocf
pub unsafe extern "C-unwind" fn lua_setallocf(
L: *mut lua_State,
f: unsafe extern "C-unwind" fn(_: *mut c_void, _: *mut c_void, _: usize, _: usize) -> *mut c_void,
ud: *mut c_void
)