[Bug other/28322] GCC new warnings and compatibility
------- Comment #8 from manu at gcc dot gnu dot org 2007-11-16 20:01 -------
> Specification of the proposed new behaviour:
> 1. GCC should ignore unknown -Wno-* options if no other warnings are to
> be issued. This is always correct since the only effect of such an
> option would be to suppress warnings which might otherwise be
> issued. If no warnings are to be issued at all then treating even
> an unknown suppression as a no-op is clearly correct.
Ignoring the -Wno-* seems easy. I am not sure about the proper way to buffer
the "unknown option" messages until the end, so we can check whether any
warnings (or errors) were produced.
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