Simplify test, include problem analysis

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8747 91177308-0d34-0410-b5e6-96231b3b80d8

test/C++Frontend/2003-09-29-ArgumentNumberMismatch.cpp

@@ -1,11 +1,15 @@
+// Non-POD classes cannot be passed into a function by component, because their
+// dtors must be run.  Instead, pass them in by reference.  The C++ front-end
+// was mistakenly "thinking" that 'foo' took a structure by component.
+
 struct C {
         int A, B;
         ~C() {}
-
-	void operator^(C b) const { }
 };
 
+void foo(C b);
+
 void test(C *P) {
-        *P ^ *P;
+	foo(*P);
 }