From c4cb3574ba63d5369728a086b0cecc7bac60f126 Mon Sep 17 00:00:00 2001
From: Mark Thom <markjordanthom@gmail.com>
Date: Sat, 2 Dec 2017 14:28:27 -0700
Subject: [PATCH] extend false cases for is

---
 src/prolog/codegen.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/prolog/codegen.rs b/src/prolog/codegen.rs
index 10aee83d..aa573b92 100644
--- a/src/prolog/codegen.rs
+++ b/src/prolog/codegen.rs
@@ -386,7 +386,7 @@ impl<'a, TermMarker: Allocator<'a>> CodeGenerator<'a, TermMarker>
                                 code.push(is_call!(temp_v!(1)));
                             },
                             _ => {
-                                return Err(ParserError::from(ArithmeticError::InvalidTerm));
+                                code.push(fail!());
                             }
                         }
                     },
-- 
2.54.0