cvs commit: src/sys/dev/sound/pcm channel.c

Stefan Farfeleder stefanf at
Thu Nov 17 14:35:17 GMT 2005

On Thu, Nov 17, 2005 at 02:51:39PM +0100, Alexander Leidinger wrote:
> Stefan Farfeleder <stefanf at> wrote:
> >On Tue, Nov 15, 2005 at 08:23:06PM +0800, Ariff Abdullah wrote:
> >>On Tue, 15 Nov 2005 09:58:52 +0000 (GMT)
> >>Robert Watson <rwatson at> wrote:
> >>> Probably a combination of -Wall and -Werror, which generally
> >>> generates a  warning along the following lines:
> >>>
> >>>      warning: suggest parentheses around comparison in operand of &
> >>>
> >>That means, warnings caused by excessive inlining while compiling
> >>maestro.c should also break the build if WARNS=1, right? Has anybody
> >>encounter and getting annoyed by this?
> >
> >No, function inlining doesn't change the semantics of expressions.

I misread Ariff's question.  Please disregard.

> So -Wall and -Werror doesn' result in issuing an error for each warning but
> instead in an error for warnings, which are issued because the code in
> question may change the semantic depending on the change which needs to be
> done to get rid of the warning?

Whether GCC prints 'warning:' or 'error:' is not changed by -Werror.
I'm not sure understand the second part of your question.  The warning
is issued because a & b == c is parsed as a & (b == c).


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