inference count call_inline, fail on undefined index

src/machine/dispatch.rs

@@ -5014,6 +5014,11 @@ impl Machine {
 
                     if self.machine_st.fail {
                         self.machine_st.backtrack();
+                    } else {
+                        try_or_throw!(
+                            self.machine_st,
+                            (self.machine_st.increment_call_count_fn)(&mut self.machine_st)
+                        );
                     }
                 }
                 &Instruction::ExecuteInlineCallN(arity, _) => {
@@ -5025,6 +5030,11 @@ impl Machine {
 
                     if self.machine_st.fail {
                         self.machine_st.backtrack();
+                    } else {
+                        try_or_throw!(
+                            self.machine_st,
+                            (self.machine_st.increment_call_count_fn)(&mut self.machine_st)
+                        );
                     }
                 }
             }

src/machine/machine_indices.rs

@@ -166,15 +166,6 @@ impl CodeIndex {
         }
     }
 
-
-    #[inline(always)]
-    pub(crate) fn is_dynamic_undefined(&self) -> bool {
-        match self.0.tag() {
-            IndexPtrTag::DynamicUndefined => true,
-            _ => false,
-        }
-    }
-
     pub(crate) fn local(&self) -> Option<usize> {
         match self.0.tag() {
             IndexPtrTag::Index => Some(self.0.p() as usize),

src/machine/system_calls.rs

@@ -1018,7 +1018,7 @@ impl Machine {
                     let index_cell = self.machine_st.heap[s+goal_arity+1];
 
                     if let Some(code_index) = get_structure_index(index_cell) {
-                        if code_index.is_undefined() || code_index.is_dynamic_undefined() {
+                        if code_index.is_undefined() {
                             self.machine_st.fail = true;
                             return Ok(());
                         }