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

in a lambda capture.

llvm-svn: 204757

2 files changed, 6 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaLambda.cpp b/clang/lib/Sema/SemaLambda.cpp
index cd62ba4b92d..0d287f7210c 100644
--- a/clang/lib/Sema/SemaLambda.cpp
+++ b/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:
diff --git a/clang/test/SemaCXX/lambda-expressions.cpp b/clang/test/SemaCXX/lambda-expressions.cpp
index 8bacc0aa646..9a53e4604f7 100644
--- a/clang/test/SemaCXX/lambda-expressions.cpp
+++ b/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}}
+}