Re: [Check-devel] Failures in check_check and check_check_export

[Branden A. <b.m...@gm...>]

(I do not seem to be getting all the emails from Ken for some reason. I see
some message I did not see in Fredrik's response.)

>From Ken's experiment, it is interesting that a division by zero can raise
a floating point signal but signal(SIGFPE) cannot. Maybe raise(SIGFPE) is
not as good a test as we thought. There is at least one other platform
where trying to raise(SIGFPE) also does not work exactly as planned (link
<https://github.com/libcheck/check/issues/97>).

Looking at the commit history to determine why SIGFPE, the test was added
in the initial revision of Check (link
<https://github.com/libcheck/check/commit/daf41f96162e36a7d31e42f93f833472ef99ee6e#diff-2e4afdbfd1b0a116126cb3022ac187b0R40>).
If there was a reason, it may be lost to the sands of time.

Perhaps the test needs to be updated to pick another signal to try. Or,
maybe inducing a division by zero is a portable way to cause a SIGFPE.

- Branden

On Tue, May 26, 2020 at 9:19 PM Ken Moffat via Check-devel <
che...@li...> wrote:

> On Tue, May 26, 2020 at 09:49:49PM +0100, Ken Moffat via Check-devel wrote:
> > On Tue, May 26, 2020 at 12:46:01PM -0700, chr...@ma...
> wrote:
> > > On 2020-05-26 10:09, Ken Moffat via Check-devel wrote:
> >
> > > Try a -O0 build of glibc and then linux.  I'm suggesting this because
> you
> > > also noticed problems in Bash.
> > >
> > > Chris
> >
> I changed my CFLAGS for glibc (only) to -O0 -march=native but no can
> do:
>
> error: #error "glibc cannot be compiled without optimization"
>
> ĸen
> --
> Do you not know that, what you belittle by the name tree is but the
> mere four-dimensional analogue of a whole multidimensional universe
> which - no, I can see you do not.  -- Druellae (a Dryad)
>
>
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