On Fri, 22 Dec 2006, Jan Engelhardt wrote:
> >These casts can eliminate "return value unused" warnings.
>
> But only when functions are tagged __must_check, and sprintf is not.
> cmpxchg is one where (void) is 'needed', __as I wrote__ in a cxgb3
> comment.
>
gcc requires functions to be declared with the attribute
warn_unused_result if a warning should be emitted in these cases. So
casting sprintf or any function without warn_unused_result to (void) is
only visual noise within the source code. Thus, the patch is correct.
David
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