[RFC PATCH] Hashtab iterators

[Paolo Bonzini]

Paolo Bonzini wrote:

> The attached patch is a stab at providing an iterator interface for 
> libiberty's hashtabs, to replace htab_traverse and htab_traverse_noresize.
> 
> The interface is a FOR_EACH_* one similar to that employed by 
> basic-block.h after the edge-vector-branch merge.
> 
> There are a few hurdles because some functions must be moved to 
> hashtab.h, but they are easily done.  In particular htab_size and 
> htab_elements are now "static inlines", but they must be kept as "extern 
> inlines" while compiling hashtab.c too.
> 
> I still have a problem however, and that's why this is an RFC: if I put 
> ANSI declarations in include/hashtab.h, libiberty compilation complains 
> because of -Wtraditional, while if I put old-style declarations, gcc 
> compilation complains because of -Wstrict-prototypes.  What to do? Would 
> it be ok to convert libiberty or hashtabs to ISO C and remove 
> -Wtraditional from there?
> 
> Paolo

This time, with the patch.

Paolo
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