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

Carl-Daniel Hailfinger c-d.hailfinger.devel.2006 at gmx.net
Thu Feb 1 22:33:04 CET 2007

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.


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