[m-rev.] for review: make get_functor handle existential types

[Ian MacLarty]

On 13 Dec 2004, at 17:09, Zoltan Somogyi wrote:

> On 13-Dec-2004, Ian MacLarty <maclarty at cs.mu.OZ.AU> wrote:
>>> +		Arity, PseudoTypeInfoList),
>>> +	% If a pseudo_type_info in PseudoTypeInfoList is not ground,
>>> +	% then the resulting TypeInfoList will be silently invalid and
>>> +	% will cause a core dump sooner or later. This is
>>
>> Should there be something after "This is" other than the next line of
>> code?
>
> That should read "This is not good, but is no worse than the current 
> behavior."
>

Doesn't ground_pseudo_type_desc_to_type_desc_det/1 throw a Mercury 
exception if the pseudo_type_info is not ground?  Since 
ground_pseudo_type_desc_to_type_desc_det is applied to all the values 
in PseudoTypeInfoList to generate TypeInfoList, isn't a core dump no 
longer possible (at least due to a non-ground pseudo_type_info)?  
Instead an exception will be thrown - which is at least nicer than a 
seg fault.

Ian.

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