Prolog compiler bug #34
Description
The prolog compiler has a bug that sometimes makes queries incorrect based on what comes before it. Here is a simple replication:
male(richard).
married(richard, christy).
male(robby).
main :-
(male(robby) -> write('Debug: robby is male'), nl ; write('Debug: robby is NOT male'), nl),
halt.
:- initialization(main).
removing only line 1 - bug does not occur
removing only line 2 - bug does not occur
switching line 1 and 2 - bug does not occur
switching line 1 and 3 - bug does not occur
changing line 1 to "female(richard)" - bug does not occur