Refine bug fix to Expr::isLvalue (commit r46917).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@46919 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/deref.c b/test/Sema/deref.c
index 7efb55e..8f8156d 100644
--- a/test/Sema/deref.c
+++ b/test/Sema/deref.c
@@ -17,7 +17,7 @@
 void foo3 (void)
 {
  void* x = 0;
- void* y = &*x;
+ void* y = &*x; // expected-error{{address expression must be an lvalue or a function designator}}
 }
 
 extern const void cv1;
@@ -26,3 +26,8 @@
   return &cv1;
 }
 
+extern void cv2;
+void *foo5 (void)
+{
+  return &cv2; // expected-error{{address expression must be an lvalue or a function designator}}
+}