[LinuxBIOS] [PATCH] Fix various compiler warnings and potential bugs

[Segher Boessenkool]

> Hmmm. You know that the signedness of char is not defined?

It is defined, but implementation-defined.  Maybe you mean
that "plain" char is a separate type from both signed char
and unsigned char?

> Besides that, we definitely should enable -fno-strict-aliasing in the
> gcc flags until we have audited all casts.

Well certainly as long as GCC keeps spitting warnings about
this, it almost never gets these warnings wrong.


Segher