When determining whether we can use "this", make sure to look through

enum contexts (along with block contexts, which we already did). Fixes
PR7196.

llvm-svn: 104444

clang/lib/Sema/Sema.cpp

@@ -305,7 +305,7 @@ void Sema::ActOnEndOfTranslationUnit() {
 DeclContext *Sema::getFunctionLevelDeclContext() {
   DeclContext *DC = CurContext;
 
-  while (isa<BlockDecl>(DC))
+  while (isa<BlockDecl>(DC) || isa<EnumDecl>(DC))
     DC = DC->getParent();
 
   return DC;

clang/test/SemaCXX/class.cpp

@@ -147,3 +147,15 @@ namespace PR7153 {
     ec.member = 0;
   }
 }
+
+namespace PR7196 {
+  struct A {
+    int a;
+
+    void f() {
+      char i[sizeof(a)];
+      enum { x = sizeof(i) };
+      enum { y = sizeof(a) };
+    }
+  };
+}