Can't use luaL_requiref with default luaopen_* functions about bindbc-lua HOT 1 CLOSED

lua_requireref takes a lua_CFunction. That's declared as nothrow. The failure is because luaopen_base is also @nogc.

Wow. This is tricky. As a rule of thumb in all my bindings, I declare function pointer types that are intended to represent function pointers in user code as nothrow, but not @nogc. I don't want to force @nogc on users, but nothrow makes sense for functions being called for C.

In this case, I didn't account for the fact that functions from the Lua C API can be arguments to these parameters. And of course, being from the C API, they are all @nogc.

So the question is what to do. If I make the function pointer type @nogc, then I will almost certainly break user code and will force all functions passed to Lua as a lua_CFunction to be @nogc. I suppose the only real solution to allow pointers to both @nogc functions and non-@nogc functions is to wrap the C function with two overloaded D functions and cast the nothrow @nogc pointer to nothrow before calling the C function.

from bindbc-lua.