On Thu, Apr 10, 2014 at 08:01:35PM +0200, Petter Reinholdtsen wrote:
> [Dr. Werner Fink]
> > Not that I'm aware ... AFAIK the TEMP_FAILURE_RETRY() macro can not
> > be handled this way by the compiler. Maybe a redefinition is required
> > to do an error() if errno is not EINTR.
>
> What do you mean by 'can not be handled this way'? The definition in
> my /usr/include/unistd.h look like this:
>
> # define TEMP_FAILURE_RETRY(expression) \
> (__extension__
> \
> ({ long int __result;
> \
> do __result = (long int) (expression);
> \
> while (__result == -1L && errno == EINTR);
> \
> __result; }))
>
Yep, this is common ... now the return result of `expression' isn't ignored
anymore ... the question is how the inlined extension cause the warning that
its result is ignored.
--
"Having a smoking section in a restaurant is like having
a peeing section in a swimming pool." -- Edward Burr
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