--- groovy-core-GROOVY_1_8_9/src/main/org/codehaus/groovy/ant/Groovyc.java	2023-09-26 13:31:23.336209403 +0200
+++ groovy-core-GROOVY_1_8_9/src/main/org/codehaus/groovy/ant/Groovyc.java	2023-09-26 13:31:35.556291444 +0200
@@ -53,11 +53,11 @@
 import java.util.Arrays;
 import java.util.Enumeration;
 import java.util.Iterator;
-import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.StringTokenizer;
+import java.util.TreeSet;
 
 /**
  * Compiles Groovy source files. This task can take the following arguments:
@@ -127,7 +127,7 @@
     private boolean keepStubs;
     private String scriptBaseClass;
 
-    private Set<String> scriptExtensions = new LinkedHashSet<String>();
+    private Set<String> scriptExtensions = new TreeSet<String>();
 
     /**
      * Adds a path for source compilation.
@@ -658,7 +658,7 @@
      */
     protected void resetFileLists() {
         compileList = new File[0];
-        scriptExtensions = new LinkedHashSet<String>();
+        scriptExtensions = new TreeSet<String>();
     }
 
     /**
--- groovy-core-GROOVY_1_8_9/src/main/org/codehaus/groovy/classgen/Verifier.java	2023-09-26 13:31:23.342876115 +0200
+++ groovy-core-GROOVY_1_8_9/src/main/org/codehaus/groovy/classgen/Verifier.java	2023-09-26 15:48:16.126304739 +0200
@@ -139,7 +139,7 @@
         for (ClassNode classNode : classNodes) {
             interfaces.add(classNode.getName());
         }
-        Set<String> interfaceSet = new HashSet<String>(interfaces);
+        Set<String> interfaceSet = new TreeSet<String>(interfaces);
         if (interfaceSet.size() != interfaces.size()) {
             throw new RuntimeParserException("Duplicate interfaces in implements list: " + interfaces, classNode);
         }
@@ -832,7 +832,7 @@
         List<Statement> staticStatements = new ArrayList<Statement>();
         final boolean isEnum = node.isEnum();
         List<Statement> initStmtsAfterEnumValuesInit = new ArrayList<Statement>();
-        Set<String> explicitStaticPropsInEnum = new HashSet<String>();
+        Set<String> explicitStaticPropsInEnum = new TreeSet<String>();
         if (isEnum) {
             for (PropertyNode propNode : node.getProperties()) {
                 if (!propNode.isSynthetic() && propNode.getField().isStatic()) {
@@ -1051,12 +1051,12 @@
     }
 
     protected void addCovariantMethods(ClassNode classNode) {
-        Map methodsToAdd = new HashMap();
-        Map genericsSpec = new HashMap();
+        Map methodsToAdd = new TreeMap();
+        Map genericsSpec = new TreeMap();
 
         // unimplemented abstract methods from interfaces
-        Map abstractMethods = new HashMap();
-        Map<String, MethodNode> allInterfaceMethods = new HashMap<String, MethodNode>();
+        Map abstractMethods = new TreeMap();
+        Map<String, MethodNode> allInterfaceMethods = new TreeMap<String, MethodNode>();
         ClassNode[] interfaces = classNode.getInterfaces();
         for (ClassNode iface : interfaces) {
             Map ifaceMethodsMap = iface.getDeclaredMethodsMap();
@@ -1086,7 +1086,7 @@
 
         addCovariantMethods(classNode, declaredMethods, abstractMethods, methodsToAdd, genericsSpec);
 
-        Map<String, MethodNode> declaredMethodsMap = new HashMap<String, MethodNode>();
+        Map<String, MethodNode> declaredMethodsMap = new TreeMap<String, MethodNode>();
         if (methodsToAdd.size() > 0) {
             for (MethodNode mn : declaredMethods) {
                 declaredMethodsMap.put(mn.getTypeDescriptor(), mn);
@@ -1336,7 +1336,7 @@
     }
 
     private Map createGenericsSpec(ClassNode current, Map oldSpec) {
-        Map ret = new HashMap(oldSpec);
+        Map ret = new TreeMap(oldSpec);
         // ret contains the type specs, what we now need is the type spec for the
         // current class. To get that we first apply the type parameters to the
         // current class and then use the type names of the current class to reset
--- groovy-core-GROOVY_1_8_9/src/main/org/codehaus/groovy/tools/FileSystemCompiler.java	2023-09-26 13:31:23.359542893 +0200
+++ groovy-core-GROOVY_1_8_9/src/main/org/codehaus/groovy/tools/FileSystemCompiler.java	2023-09-26 13:54:05.625117288 +0200
@@ -246,6 +246,7 @@
         if (errors) {
             return null;
         } else {
+            Collections.sort(fileList);
             return fileList.toArray(new String[fileList.size()]);
         }
     }