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Re: Convert libiberty to use ISO C prototype style 3/n

> I think it is a logical part of the conversion and there OK.  But, you
> might want to hear from DJ before that.

I agree it's appropriate for this conversion.  We may need to revisit
this paragraph of the gcc documentation too:

        * Use of ISO C style function definitions.  This warning
          intentionally is _not_ issued for prototype declarations or
          variadic functions because these ISO C features will appear
          in your code when using libiberty's traditional C
          compatibility macros, `PARAMS' and `VPARAMS'.  This warning
          is also bypassed for nested functions because that feature is
          already a GCC extension and thus not relevant to traditional
          C compatibility.
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