diogo/yap-6.3
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protect against unbound

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This commit is contained in:
Vitor Santos Costa 2016-05-13 11:41:55 +01:00
parent e5891afe44
commit 03da182460
1 changed files with 2 additions and 1 deletions
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pl/absf.yap
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@ -169,7 +169,8 @@ absolute_file_name(File0,File) :-
expand(true)],F,G).
'$absolute_file_name'(File,LOpts,TrueFileName, G) :-
% must_be_of_type( atom, File ),
% must_be_of_type( atom, File ),
( var(File) -> instantiation_error(File) ; true),
abs_file_parameters(LOpts,Opts),
current_prolog_flag(open_expands_filename, OldF),
current_prolog_flag( fileerrors, PreviousFileErrors ),