1 files changed, 7 insertions, 8 deletions
diff --git a/ast_to_hir.cpp b/ast_to_hir.cpp
index 316bcf7d71..addbeefc4b 100644
--- a/ast_to_hir.cpp
+++ b/ast_to_hir.cpp
@@ -1889,17 +1889,10 @@ parameter_lists_match(exec_list *list_a, exec_list *list_b)
    exec_list_iterator iter_a = list_a->iterator();
    exec_list_iterator iter_b = list_b->iterator();
 
-   while (iter_a.has_next()) {
+   while (iter_a.has_next() && iter_b.has_next()) {
       ir_variable *a = (ir_variable *)iter_a.get();
       ir_variable *b = (ir_variable *)iter_b.get();
 
-      /* If all of the parameters from the other parameter list have been
-       * exhausted, the lists have different length and, by definition,
-       * do not match.
-       */
-      if (!iter_b.has_next())
-	 return false;
-
       /* If the types of the parameters do not match, the parameters lists
        * are different.
        */
@@ -1910,6 +1903,12 @@ parameter_lists_match(exec_list *list_a, exec_list *list_b)
       iter_b.next();
    }
 
+   /* Unless both lists are exhausted, they differ in length and, by
+    * definition, do not match.
+    */
+   if (iter_a.has_next() != iter_b.has_next())
+      return false;
+
    return true;
 }