Re: [Boost-users] isnan stopped working

Subject: Re: [Boost-users] isnan stopped working
From: Thijs Koerselman (thijskoerselman_at_[hidden])
Date: 2009-01-06 11:38:46

On Tue, Jan 6, 2009 at 9:46 AM, Bernhard Walle <bernhard.walle_at_[hidden]>wrote:

>
> > Sorry it DOES work. When i step over the last assignment to the end of
> the
> > function block, XCode doesn't update the value of ret in the debugging
> > window. It still displays 0xdeadbeaf, even though the value has changed.
> So
> > it did return a value. I wonder if this is intended. I can't think of a
> good
> > reason why XCode it would work like that.
>
> That could be an optimisation. Do you compile with -O0 (or without any
> -O)?
>
>
I accidentally had it set to -Os, but changing it back to -O0 doesn't seem
to make a difference in this case. You may be right about the optimization
though, because if I put an extra dummy statement in like "ret = ret" it is
also skipped by gdb.

Thijs