🚀 go-pugleaf

It would be nice to not issue some kinds of warnings for completely dead code.

I have, for example:

      if (sizeof (cccc) > 4)
	cccc |= cccc << 32;

If CCCC is 32 bits, gcc 2.1 -Wall issues a warning that the shift count is
too large.  That's true; the code is wrong.  But it will never be executed.
If compiled with sizeof (CCCC) == 8, for example (i.e., cccc is declared
long long instead of long), however, the code will be executed, and it will
be correct.

Since cpp cannot do things like sizeof, there is no way to avoid having the
known-erroneous code presented to the compiler.  But gcc does this sort of
optimization well, so the dead statements never actually produce any code,
so using them is fine.  Only the warnings are annoying.