Fix superclass of Class

ql/src/codeql_ruby/ast/internal/Module.qll

@@ -45,15 +45,15 @@ private module Cached {
   Module getSuperClass(Module cls) {
     cls = TResolved("Object") and result = TResolved("BasicObject")
     or
-    cls =
-      TResolved([
-          "Module", "Class", "Numeric", "Array", "Hash", "FalseClass", "TrueClass", "NilClass"
-        ]) and
+    cls = TResolved(["Module", "Numeric", "Array", "Hash", "FalseClass", "TrueClass", "NilClass"]) and
     result = TResolved("Object")
     or
     cls = TResolved(["Integer", "Float", "Rational", "Complex"]) and
     result = TResolved("Numeric")
     or
+    cls = TResolved("Class") and
+    result = TResolved("Module")
+    or
     not cls = TResolved(builtin()) and
     (
       exists(ClassDeclaration d |

ql/test/library-tests/modules/ancestors.expected

@@ -8,7 +8,7 @@
 #-----| BasicObject
 
 #-----| Class
-#-----| super -> Object
+#-----| super -> Module
 
 #-----| Complex
 #-----| super -> Numeric

ql/test/library-tests/modules/modules.expected

@@ -97,7 +97,7 @@ getSuperClass
 | calls.rb:29:1:44:3 | C | file://:0:0:0:0 | Object |
 | calls.rb:51:1:55:3 | D | calls.rb:29:1:44:3 | C |
 | file://:0:0:0:0 | Array | file://:0:0:0:0 | Object |
-| file://:0:0:0:0 | Class | file://:0:0:0:0 | Object |
+| file://:0:0:0:0 | Class | file://:0:0:0:0 | Module |
 | file://:0:0:0:0 | Complex | file://:0:0:0:0 | Numeric |
 | file://:0:0:0:0 | FalseClass | file://:0:0:0:0 | Object |
 | file://:0:0:0:0 | Float | file://:0:0:0:0 | Numeric |

ql/test/library-tests/modules/superclasses.expected

@@ -7,7 +7,7 @@
 #-----| BasicObject
 
 #-----| Class
-#-----|  -> Object
+#-----|  -> Module
 
 #-----| Complex
 #-----|  -> Numeric