Re: MSVC warnings when compiling Lua as C++

> I'm not sure I entirely understand what you're asking, but that patch for lgc.c does not seem to change the warnings MSVC emits.

The first time this warning appeared (around 2011, I guess), we added
a cast whenever sizenode was used as an array index, as here:

-#define gnodelast(h)    gnode(h, sizenode(h))
+#define gnodelast(h)    gnode(h, cast_sizet(sizenode(h)))

The rationale was that, as it complained of an implicit conversion, we
made the conversion explicit. As far as I can tell, that change stopped
the warnings at that time.

If adding a cast to int stops the warning, maybe we won't need this
other cast anymore.

-- Roberto

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