print attributes of variables when attribute_goals/2 is not defined

2019-10-02 17:01:03 -06:00
parent a623061a1a
commit 04bc8ec084
3 changed files with 13 additions and 2 deletions
--- a/src/prolog/machine/mod.rs
+++ b/src/prolog/machine/mod.rs
@@ -187,7 +187,7 @@ impl Machine {
                self.machine_st.attr_var_init.project_attrs_loc = self.code_repo.code.len();
                self.code_repo.code.extend(code.into_iter());
            }
-            Err(_) => panic!("Machine::compile_special_forms() failed at PROJECT_ATTRS"),
+            Err(e) => panic!("Machine::compile_special_forms() failed at PROJECT_ATTRS: {}", e),
        }
    }