From: tr.17687@z991.linuxsc.com   
      
   Andrey Tarasevich  writes:   
      
   > On Sat 1/3/2026 12:04 PM, Chris M. Thomasson wrote:   
   >   
   >> struct object_prv_vtable {   
   >>    int (*fp_destroy) (void* const);   
   >> };   
   >   
   > And interesting piece of trivia about C function types and function   
   > type compatibility rules is that:   
   >   
   > 1. Top-level qualifiers on function parameters are preserved as part   
   > of function type.   
      
   Not completely wrong but not exactly right either.   
      
   > However, such top-level qualifiers are ignored when   
   > determining function type compatibility.   
      
   It's easier to take the point of view that top-level qualifiers   
   for function parameters don't participate in the type of the   
   function as a whole.  Taking that view is easier to understand   
   and gives results that are indistinguishable from the actual   
   rules.   
      
   --- SoupGate-Win32 v1.05   
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