correct for issues #88, #89, #90, conformity test #208.

2019-04-06 09:46:42 -06:00
parent a3af56351b
commit 16eadc7412
8 changed files with 43 additions and 35 deletions
--- a/src/prolog/codegen.rs
+++ b/src/prolog/codegen.rs
@@ -317,6 +317,7 @@ impl<'a, TermMarker: Allocator<'a>> CodeGenerator<TermMarker>
            &InlinedClauseType::IsAtom(..) =>
                match terms[0].as_ref() {
                    &Term::Constant(_, Constant::Char(_))
+                  | &Term::Constant(_, Constant::EmptyList)
                  | &Term::Constant(_, Constant::Atom(..)) => {
                        code.push(succeed!());
                    },