From 3ed235ac0b4faca52a95027e98fcb4d466a699ae Mon Sep 17 00:00:00 2001
From: Benji Dial <benji6283@gmail.com>
Date: Mon, 25 Dec 2023 14:38:37 -0500
Subject: add virtual destructors to expr and assertion

---
 lib94/warrior.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib94/warrior.cpp b/lib94/warrior.cpp
index ba6edbc..a744cb8 100644
--- a/lib94/warrior.cpp
+++ b/lib94/warrior.cpp
@@ -60,6 +60,7 @@ namespace lib94 {
   //this abstract class represents expression fields extracted in stage 2 and evaluted in stage 4.
   class expr {
   public:
+    virtual ~expr() = default;
     unsigned source_line_number;
     number_t offset;
     virtual intermediate_t evaluate(const label_offset_set &label_offsets) const = 0;
@@ -68,6 +69,7 @@ namespace lib94 {
   //this abstract class represents assertions fields extracted in stage 1 and evaluated in stage 3
   class assertion {
   public:
+    virtual ~assertion() = default;
     unsigned source_line_number;
     virtual bool check(const label_offset_set &label_offsets) const = 0;
   };
-- 
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