test and fix for 152631: decp targetting aspect using cflow

tests/bugs153/pr152631/EMA.java

@@ -0,0 +1,13 @@
+
+public aspect EMA {
+    before() : cflow(execution(* *(..))) {}
+}
+
+aspect Goo {
+  declare parents: EMA extends C;
+  public void EMA.m() {}
+}
+
+abstract class C {
+  abstract void m();
+}

tests/src/org/aspectj/systemtest/ajc153/Ajc153Tests.java

@@ -26,6 +26,7 @@ public class Ajc153Tests extends org.aspectj.testing.XMLBasedAjcTestCase {
   // public void testArgnamesAndJavac_pr148381() { runTest("argNames and javac");}
   // public void testCFlowXMLAspectLTW_pr149096() { runTest("cflow xml concrete aspect"); }
   // public void testAmbiguousBinding_pr121805() { runTest("ambiguous binding");}
+  public void testDecpAndCflowadderMungerClash_pr152631() { runTest("decp and cflowadder munger clash");}
   public void testGenericInheritanceDecp_pr150095() { runTest("generics, inheritance and decp");}
   public void testIllegalStateException_pr148737() { runTest("illegalstateexception for non generic type");}
   public void testAtajInheritance_pr149305_1()     { runTest("ataj inheritance - 1");}

tests/src/org/aspectj/systemtest/ajc153/ajc153.xml

@@ -254,4 +254,8 @@
       </compile>
     </ajc-test>
     
+    <ajc-test dir="bugs153/pr152631" title="decp and cflowadder munger clash">
+      <compile files="EMA.java" options="-1.5"/>
+    </ajc-test>
+    
 </suite>

weaver/src/org/aspectj/weaver/bcel/BcelTypeMunger.java

@@ -247,7 +247,7 @@ public class BcelTypeMunger extends ConcreteTypeMunger {
                         boolean satisfiedByITD = false;
                         for (Iterator ii = newParentTarget.getType().getInterTypeMungersIncludingSupers().iterator(); ii.hasNext(); ) {
                             ConcreteTypeMunger m = (ConcreteTypeMunger)ii.next();
-                            if (m.getMunger().getKind() == ResolvedTypeMunger.Method) {
+                            if (m.getMunger()!=null && m.getMunger().getKind() == ResolvedTypeMunger.Method) {
                                 ResolvedMember sig = m.getSignature();
                                 if (!Modifier.isAbstract(sig.getModifiers())) {
                                 	
@@ -265,7 +265,7 @@ public class BcelTypeMunger extends ConcreteTypeMunger {
                                         satisfiedByITD = true;
                                     }
                                 }
-                            } else if (m.getMunger().getKind() == ResolvedTypeMunger.MethodDelegate) {
+                            } else if (m.getMunger()!=null && m.getMunger().getKind() == ResolvedTypeMunger.MethodDelegate) {
                                 satisfiedByITD = true;//AV - that should be enough, no need to check more
                             }
                         }