documented 3 bugs

src/TypeChecker/Bugs.md

@@ -0,0 +1,29 @@
+# Bugs
+
+## Using uninstantiated type variables
+
+Program below should not type check
+
+```hs
+data Test (a) where {
+    Test : b -> Test (a)
+                    };
+```
+
+## Duplicate definitions of functions
+
+Program below should not type check
+
+```hs
+id x = x ;
+id x = x ;
+```
+
+## What?
+
+Program below should not type check
+
+```hs
+main : a -> b ;
+main x = x;
+```