--- 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/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()]);
         }
     }