On Sun, Sep 25, 2011 at 5:08 PM, Christian Weisgerber
<na...@mips.inka.de> wrote:
> Tobias Ulmer <tobi...@tmux.org> wrote:
>
>> -> echo "#define C_STACK_GROWS_DOWNWARD 1" >>$@
>> I doubt this is true for all architectures.
>
> It's certainly wrong for hppa.
>
>> -> # OpenBSD base still uses GCC 3.3.5 which does not support -fwrapv
>> -> ifeq ($(SYSTEM), OpenBSD)
>>
>> This is questionable today and causes chicken to omit "-fwrapv",
>> which may not be desirable.
>
> Two OpenBSD architectures still use GCC 3 and they suffer lots of
> unnecessary grief because people blindly use -Wxxx and -fxxx compiler
> options that are only supported by GCC 4.
Is that 'blindly use -Wxxx' or write sloppy code?
Linus Torvalds seems to fall into the later [1]. For example, he
proclaimed 'GCC is crap' because GCC warned of the following (the
expression < 0 was always false):
unsigned int x = ...
if (x < 0)
....
Its kind of funny how the kernel still suffers defects that tools like
GCC will [sometimes] catch.
Jeff
[1] http://linux.derkeiler.com/Mailing-Lists/Kernel/2006-11/msg08325.html
