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

[Carl-Daniel Hailfinger]

Segher Boessenkool wrote:
>> 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?

Mostly. I wanted to say that the signedness of char is
implementation-defined and differs between the linux targets
on different architectures (see S390 vs. the rest for an example).

>> 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.

I don't know whether it is spitting warnings about aliasing,
but we're violating the aliasing rules described in the gcc
man page.

Regards,
Carl-Daniel
-- 
http://www.hailfinger.org/