PR19249: Don't forget to DiagnoseUseOfDecl for the implicit use of a variable

in a lambda capture.

llvm-svn: 204757

clang/lib/Sema/SemaLambda.cpp

@@ -1062,6 +1062,8 @@ void Sema::ActOnStartOfLambdaDefinition(LambdaIntroducer &Intro,
       }
 
       Var = R.getAsSingle<VarDecl>();
+      if (Var && DiagnoseUseOfDecl(Var, C->Loc))
+        continue;
     }
 
     // C++11 [expr.prim.lambda]p8:

clang/test/SemaCXX/lambda-expressions.cpp

@@ -359,3 +359,7 @@ namespace PR18473 {
   };
   template void f<NoCopy>(); // expected-note {{instantiation}}
 }
+
+void PR19249() {
+  auto x = [&x]{}; // expected-error {{cannot appear in its own init}}
+}