fix for 120739

loadtime/src/org/aspectj/weaver/loadtime/ClassLoaderWeavingAdaptor.java

 
         // register the definitions
         registerDefinitions(weaver, loader, definitions);
+        if (enabled) {
 
-        //bcelWorld.setResolutionLoader(loader.getParent());//(ClassLoader)null);//
-        
-        // after adding aspects
-        weaver.prepareForWeave();
+            //bcelWorld.setResolutionLoader(loader.getParent());//(ClassLoader)null);//
+            
+            // after adding aspects
+            weaver.prepareForWeave();
+        }
+        else {
+        	bcelWorld = null;
+        	weaver = null;
+        }
     }
 
     /**
                 }
             }
         }
+        
+        /* We didn't register any aspects so disable the adaptor */
+        if (namespace == null) {
+        	enabled = false;
+    		info("no aspects registered. Disabling weaver for class loader " + getClassLoaderName(loader));
+        }
     }
 
     /**

tests/java5/ataspectj/ataspectj/EmptyAspect.aj

+package ataspectj;
+
+public aspect EmptyAspect {
+	
+}

tests/java5/ataspectj/ataspectj/aop-dump.xml

 <?xml version="1.0"?>
 <aspectj>
+	<aspects>
+		<aspect name="ataspectj.EmptyAspect"/>
+	</aspects>
     <weaver options="-XmessageHandlerClass:ataspectj.TestHelper">
         <dump within="ataspectj.DumpTestThe*"/> 
     </weaver>

tests/java5/ataspectj/ataspectj/aop-dumpbeforeandafter.xml

 <?xml version="1.0"?>
 <aspectj>
+	<aspects>
+		<aspect name="ataspectj.EmptyAspect"/>
+	</aspects>
     <weaver options="-XlazyTjp -verbose">
         <dump within="com.foo.bar..*" beforeandafter="true"/> 
         <include within="com.foo..*"/>

tests/java5/ataspectj/ataspectj/aop-dumpproxy.xml

 <?xml version="1.0"?>
 <aspectj>
+	<aspects>
+		<aspect name="ataspectj.EmptyAspect"/>
+	</aspects>
     <weaver>
 <!--    
         <dump within="*..*Proxy*" beforeandafter="true"/> 

tests/java5/ataspectj/ataspectj/ltwreweavable/EmptyAtAspect.java

+package ataspectj.ltwreweavable;
+
+import org.aspectj.lang.annotation.Aspect;
+
+@Aspect
+public class EmptyAtAspect {
+
+}
+    

tests/java5/ataspectj/ataspectj/ltwreweavable/aop-ltwreweavable-declared.xml

     <weaver options="-XmessageHandlerClass:ataspectj.ltwlog.MessageHolder"/>
     <aspects>
         <aspect name="ataspectj.ltwreweavable.AspectReweavableLogging"/>
+		<aspect name="ataspectj.ltwreweavable.EmptyAtAspect"/>
     </aspects>
 </aspectj>

tests/java5/ataspectj/ataspectj/ltwreweavable/aop-ltwreweavable-omitted.xml

 <aspectj>
     <weaver options="-XmessageHandlerClass:ataspectj.ltwlog.MessageHolder"/>
     <!--aspect is not declared here so as to produce an error -->
-    <aspects/>
+    <aspects>
+		<aspect name="ataspectj.ltwreweavable.EmptyAtAspect"/>
+    </aspects>
 </aspectj>

tests/ltw/aop-optionsonly.xml

+<aspectj>
+    <weaver options="-verbose"/>
+</aspectj>

tests/src/org/aspectj/systemtest/ajc150/ataspectj/ltw.xml

     </ajc-test>
 
     <ajc-test dir="java5/ataspectj" title="LTW DumpTest">
+        <compile
+                files="ataspectj/EmptyAspect.aj"
+                options="-1.5 -Xlint:ignore"/>
         <compile
                 files="ataspectj/DumpTest.java,ataspectj/DumpTestTheDump.java,ataspectj/TestHelper.java"
                 options="-1.5"/>
     </ajc-test>
     
     <ajc-test dir="java5/ataspectj" title="LTW DumpTest before and after">
+        <compile
+                files="ataspectj/EmptyAspect.aj"
+                options="-1.5 -Xlint:ignore"/>
         <compile
                 files="com/foo/bar/Test.java, com/foo/bar/Test$$EnhancerByCGLIB$$12345.java"
                 options="-1.5"/>
                 <line text="info AspectJ Weaver Version"/>
                 <line text="info register classloader"/>
                 <line text="info using"/>
+				<line text="info register aspect ataspectj.EmptyAspect"/>
         		<line text="info weaving 'com.foo.bar.Test'"/>
             </stderr>
         </run>
     </ajc-test>
 
     <ajc-test dir="java5/ataspectj" title="LTW DumpTest proxy">
+        <compile
+                files="ataspectj/EmptyAspect.aj"
+                options="-1.5 -Xlint:ignore"/>
         <compile
                 files="ataspectj/TestProxyGenerator.java,ataspectj/TestInterface.java"
                 options="-1.5"/>
 
     <ajc-test dir="java5/ataspectj" title="Compile time aspects declared to ltw weaver">
         <compile
-                files="ataspectj/ltwlog/MessageHolder.java,ataspectj/ltwreweavable/MainReweavableLogging.java,ataspectj/ltwreweavable/AspectReweavableLogging.java,ataspectj/ltwreweavable/Advisable.java"
+                files="ataspectj/ltwlog/MessageHolder.java,ataspectj/ltwreweavable/MainReweavableLogging.java,ataspectj/ltwreweavable/AspectReweavableLogging.java,ataspectj/ltwreweavable/Advisable.java,ataspectj/ltwreweavable/EmptyAtAspect.java"
                 options="-1.5"
                 outjar="main1.jar"/>
         <ant file="ajc-ant.xml" target="ltw.oldAspectsDeclared" verbose="true"/>

tests/src/org/aspectj/systemtest/ajc152/Ajc152Tests.java

 
 import junit.framework.Test;
 
-//import org.aspectj.systemtest.ajc150.GenericsTests;
 import org.aspectj.asm.AsmManager;
 import org.aspectj.asm.IHierarchy;
 import org.aspectj.asm.IProgramElement;
 //	  // public class Pair<F,S> affected by pertarget aspect
 //	  GenericsTests.verifyClassSignature(ajc,"Pair","<F:Ljava/lang/Object;S:Ljava/lang/Object;>Ljava/lang/Object;LIdempotentCache$ajcMightHaveAspect;;");
 //  }
+	
+	public void testNoAspects(){
+//		setSystemProperty(WeavingAdaptor.WEAVING_ADAPTOR_VERBOSE,"true");
+		runTest("Ensure no weaving without included aspects");
+	}
 
   // tests that can't be included for some reason
 

tests/src/org/aspectj/systemtest/ajc152/ajc152.xml

          <!-- should check for expected stderr output here -->
       </run>
     </ajc-test>
+
+	<ajc-test dir="ltw"
+      title="Ensure no weaving without included aspects"
+      keywords="reweavable">
+        <compile
+        	files="TestMain.java, Main.java"
+        >
+        </compile>	
+        <run class="TestMain" ltw="aop-optionsonly.xml">
+        	<stdout>
+                <line text="Main.main"/>
+                <line text="Main.test1"/>
+                <line text="Main.test2"/>
+            </stdout>
+        	<stderr>
+				<line text="info AspectJ Weaver Version"/>
+				<line text="info register classloader org.aspectj.weaver.loadtime.WeavingURLClassLoader"/>
+				<line text="info using"/>
+				<line text="info no aspects registered. Disabling weaver for class loader org.aspectj.weaver.loadtime.WeavingURLClassLoader"/>
+            </stderr>
+        </run>
+    </ajc-test>
     
 </suite>