[15/17] prevent hash set/map insertion of deleted entries

[Jeff Law]

On 12/28/22 05:32, Alexandre Oliva via Gcc-patches wrote:
> On Dec 27, 2022, David Malcolm <dmalcolm@redhat.com> wrote:
> 
>> Would it make sense to also add assertions that such entries aren't
>> Traits::is_deleted?  (both for hash_map and hash_set)
> 
> Yeah, I guess so.  I've come up with something for hash-table proper
> too, coming up in 17/17.
> 
> 
> Just like the recently-added checks for empty entries, add checks for
> deleted entries as well.  This didn't catch any problems, but it might
> prevent future accidents.  Suggested by David Malcolm.
> 
> Regstrapped on x86_64-linux-gnu.  Ok to install?
> 
> 
> for  gcc/ChangeLog
> 
> 	* hash-map.h (put, get_or_insert): Check that added entry
> 	doesn't look deleted either.
> 	& hash-set.h (add): Likewise.
OK
jeff