Re: [chrony-dev] GCC issue

[Bill Unruh <unruh@xxxxxxxxxxxxxx>]

On Tue, 21 Jan 2014, Miroslav Lichvar wrote:

> On Tue, Jan 21, 2014 at 10:23:29AM -0800, Bill Unruh wrote:
> > You need the fprintf()<0 since fprintf almost always returns a non-zero
> > number. Only if it is negative is it an error.
>
> Right. I missed that.
>
> > I have no idea why the bitwise or would fail.
>
> Apparently there is no sequence point with the | operator and the
> compiler is free to use any order.
>
> http://en.wikipedia.org/wiki/Sequence_point

Lets hope that 
r=(fprintf()<0) ;
r|=fclose()
does not get optimized away by the compiler, and then one runs into the same
problem.


>

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William G. Unruh   |  Canadian Institute for|     Tel: +1(604)822-3273
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