From 1298a32801f12cc20b5a706377443d557e8da9b6 Mon Sep 17 00:00:00 2001
From: bd-912 <bdunahu@colostate.edu>
Date: Fri, 10 May 2024 14:25:06 -0600
Subject: Require parameters to match exactly in SymbolTable for non-overwrite

---
 output/negative/FailedOverride-error.java | 21 +++++++++++++++++++++
 st/SymbolTable.java                       |  2 +-
 2 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 output/negative/FailedOverride-error.java

diff --git a/output/negative/FailedOverride-error.java b/output/negative/FailedOverride-error.java
new file mode 100644
index 0000000..9ffac74
--- /dev/null
+++ b/output/negative/FailedOverride-error.java
@@ -0,0 +1,21 @@
+class FailedOverrride {
+    public static void main(String[] args) {
+        System.out.println(new A().init());
+    }
+}
+
+class A {
+    public int init() {
+        return 0;
+    }
+
+    public int x(A a) {
+        return 1;
+    }
+}
+
+class B extends A {
+    public int x(B a) {
+        return 2;
+    }
+}
diff --git a/st/SymbolTable.java b/st/SymbolTable.java
index 63832e6..0fca239 100644
--- a/st/SymbolTable.java
+++ b/st/SymbolTable.java
@@ -88,7 +88,7 @@ public class SymbolTable {
                                                                m.getName(),
                                                                cls.getName()));
                 for (int i = 0; i < actual.size(); ++i) {
-                    if (!expected.get(i).getClassInstance().equalsOnExtend(actual.get(i).getClassInstance())) {
+                    if (!expected.get(i).getClassInstance().equals(actual.get(i).getClassInstance())) {
                         throw new TypecheckException(String.format("SymbolTable found that %s is overwritten in %s!",
                                                                    m.getName(),
                                                                    cls.getName()));
-- 
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