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dif/2 crash #1378

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infradig opened this issue Mar 29, 2022 · 1 comment

infradig commented Mar 29, 2022 •

edited

$ scryer-prolog
?- dif([a],B), B=[Z].
thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', src/machine/machine_state_impl.rs:1624:61
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
$

The text was updated successfully, but these errors were encountered:

UWN commented Mar 29, 2022

Stringrelated.

?- dif([[]],B), B=[_|_].
   B = [_A|_B], dif:dif([[]],[_A|_B]).
?- E=a,dif([E],B), B=[_|_].
   E = a, B = [_A|_B], dif:dif("a",[_A|_B]).
?- dif([a],B), B=[_|_].
thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', src/machine/machine_state_impl.rs:1624:61

mthom added a commit that referenced this issue


          fix dif/2 crash (#1378)

c490d81

infradig closed this as completed

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