Added a test infrastructure that simulates eclipse with diet-parse, type-binding and so forth. Similar to eclipse, the test needs to be executed with lombok as vm-agent. @Delegate runs with this setup, sadly val does not, at least for now.

And as expected the tests shows that @Synchronized and @SneakyThrows are currently broken for eclipse but not for ecj.

test/transform/resource/after-eclipse/SneakyThrowsSingle.java

@@ -0,0 +1,35 @@
+import java.io.IOException;
+class SneakyThrowsSingle {
+  SneakyThrowsSingle() {
+    super();
+  }
+  public @lombok.SneakyThrows(Throwable.class) void test() {
+    try 
+      {
+        System.out.println("test1");
+      }
+    catch (final Throwable $ex)       {
+        throw lombok.Lombok.sneakyThrow($ex);
+      }
+  }
+  public @lombok.SneakyThrows(IOException.class) void test2() {
+    try 
+      {
+        System.out.println("test2");
+        throw new IOException();
+      }
+    catch (final IOException $ex)       {
+        throw lombok.Lombok.sneakyThrow($ex);
+      }
+  }
+  public @lombok.SneakyThrows(value = IOException.class) void test3() {
+    try 
+      {
+        System.out.println("test3");
+        throw new IOException();
+      }
+    catch (final IOException $ex)       {
+        throw lombok.Lombok.sneakyThrow($ex);
+      }
+  }
+}