test and fix for pr113447: from Helen.

tests/bugs150/PR113447.java

@@ -0,0 +1,40 @@
+public class PR113447 {
+
+	public static void main(String[] args) {
+		PR113447 me = new PR113447();
+		me.method1();
+		me.method3();
+	}
+	
+	public void method1(){}
+
+	public void method3(){}
+}
+
+aspect Super {
+
+	// second method doesn't exist
+	pointcut pc1(PR113447 s) : 
+		(this(s) && execution(void method1()))
+		|| (this(s) && execution(void method2()));
+
+	before(PR113447 s) : pc1(s) {
+	}
+	
+	// second method does exist
+	pointcut pc2(PR113447 s) : 
+		(this(s) && execution(void method1()))
+		|| (this(s) && execution(void method3()));
+
+	before(PR113447 s) : pc2(s) {
+	}
+	
+	// second method doesn't exist
+	pointcut pc3(PR113447 s) : 
+		(args(s) && execution(void method1()))
+		|| (args(s) && execution(void method2()));
+
+	before(PR113447 s) : pc3(s) {
+	}
+
+}

tests/src/org/aspectj/systemtest/ajc150/Ajc150Tests.java

@@ -632,6 +632,10 @@ public class Ajc150Tests extends org.aspectj.testing.XMLBasedAjcTestCase {
 	  runTest("weaveinfo message for declare at method on an ITDd method");
   }
   
+  public void testNoVerifyErrorWithTwoThisPCDs_pr113447() {
+	  runTest("no verify error with two this pcds");
+  }
+  
   // helper methods.....
   
   public SyntheticRepository createRepos(File cpentry) {

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

@@ -698,6 +698,12 @@
         </compile>
     </ajc-test> 
 
+    <ajc-test dir="bugs150" title="no verify error with two this pcds">
+        <compile files="PR113447.java">
+        </compile>
+        <run class="PR113447"/>
+    </ajc-test> 
+
     <!-- ============================================================================ -->
     <!-- ============================================================================ -->
     

weaver/src/org/aspectj/weaver/patterns/ThisOrTargetPointcut.java

@@ -179,17 +179,19 @@ public class ThisOrTargetPointcut extends NameBindingPointcut {
 		if (type instanceof BindingTypePattern) {
 		  BindingTypePattern btp = (BindingTypePattern)type;
 		  // Check if we have already bound something to this formal
-		  if ((state.get(btp.getFormalIndex())!=null) && (lastMatchedShadowId != shadow.shadowId)){
-//		  	ISourceLocation pcdSloc = getSourceLocation(); 
-//		  	ISourceLocation shadowSloc = shadow.getSourceLocation();
-//			Message errorMessage = new Message(
-//				"Cannot use "+(isThis?"this()":"target()")+" to match at this location and bind a formal to type '"+var.getType()+
-//				"' - the formal is already bound to type '"+state.get(btp.getFormalIndex()).getType()+"'"+
-//				".  The secondary source location points to the problematic "+(isThis?"this()":"target()")+".",
-//				shadowSloc,true,new ISourceLocation[]{pcdSloc}); 
-//			shadow.getIWorld().getMessageHandler().handleMessage(errorMessage);
+		  Var existingVarInThisSlot = state.get(btp.getFormalIndex());
+		  
+		  if (existingVarInThisSlot != null ) {
+			  
+			// Is it already bound to exactly the same thing?
+			if (existingVarInThisSlot.equals(var)) return Literal.TRUE;
+			
+			// If state.get() returned non-null then someone has already bound the variable in that slot at
+			// the shadow 'shadow.shadowId'.  If our 'lastMatchedShadowId' is not the same as 'shadow.shadowId'
+			// then this pointcut wasn't involved in matching and so shouldn't contribute to binding - so just
+			// return Literal.TRUE meaning 'no residue'
+		    if (lastMatchedShadowId != shadow.shadowId) return Literal.TRUE;
 			state.setErroneousVar(btp.getFormalIndex());
-			//return null;
 		  }
 		}
 		return exposeStateForVar(var, type, state, shadow.getIWorld());