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throw instantiation_error from error/2 if Error_term uninstantiated (#2060)

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Mark
2023-09-30 22:22:01 -06:00
parent 6fa00b5b55
commit 4a8aa0acbd
1 changed files with 4 additions and 1 deletions
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5
src/lib/builtins.pl
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@@ -2226,4 +2226,7 @@ nl(Stream) :-
% %
% Throws an exception of the following structure: `error(ErrorTerm, ImpDef)`. % Throws an exception of the following structure: `error(ErrorTerm, ImpDef)`.
error(Error_term, Imp_def) :- error(Error_term, Imp_def) :-
throw(error(Error_term, Imp_def)). ( var(Error_term) ->
throw(error(instantiation_error, error/2))
; throw(error(Error_term, Imp_def))
).