typedef names in parameter lists

[Prescott K Turner]

Where in the draft C standard does it resolve the meaning of
     typedef float X;
     int f (const X);
which means that f's parameter is a const float?  The standard syntax is
consistent with another interpretation, that f's parameter is a const int
named X.

I'm working on a parser, and need to know the general answer, not just
this one case.  For the life of me, I can't find it in the sections on 
function declarators, typedef names, scope, or type specifiers.
--
Prescott K. Turner, Jr.
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