rishi/scryer-prolog
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix halt/1 built-in predicate for ISO Prolog Core standard compliance

Browse Source
This commit is contained in:
Paulo Moura
2022-03-06 21:33:49 +00:00
parent 475fbf9561
commit 495168e7bb
1 changed files with 8 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/lib/builtins.pl
View File

@@ -1218,8 +1218,11 @@ op(Priority, OpSpec, Op) :-
halt :- halt(0). halt :- halt(0).
halt(N) :- halt(N) :-
must_be_number(N, halt/1), ( var(N) ->
( -2^31 =< N, N =< 2^31 - 1 -> throw(error(instantiation_error, halt/1)) % 8.17.4.3 a)
; \+ integer(N) ->
throw(error(type_error(integer, N), halt/1)) % 8.17.4.3 b)
; -2^31 =< N, N =< 2^31 - 1 ->
'$halt'(N) '$halt'(N)
; throw(error(domain_error(exit_code, N), halt/1)) ; throw(error(domain_error(exit_code, N), halt/1))
). ).