Bug#674917: libc6-dev: mblen is erroneously marked warn_unused_result
On Tue, May 29, 2012 at 11:36:03AM -0500, Jonathan Nieder wrote:
> Using -Werror in contexts other than private development where you
> control the toolchain and can easily suppress known warnings is not
> very wise.
I think it's a wise policy to tolerate no warnings to the extent possible.
-Werror helps policing that, but of course it should be turned off if there's a
truly spurious warning that cannot be easily worked around.
Usually, warnings can be worked around with minimal disruption to the program.
However, I was not able to find a simple way for warn_unused_result: even
explicit casting to void gets the warning.
(The way I worked around this in the project that triggered this report, was to
eliminate all uses to mblen. Wasn't terribly difficult, and eliminated a
nonreentrancy so I suppose it's not all bad. But not the point of the warning.)
--
Antti-Juhani Kaijanaho, Jyväskylä, Finland
http://antti-juhani.kaijanaho.fi/newblog/
http://www.flickr.com/photos/antti-juhani/
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