[Sema] Do not permit binding a reference to a compound literal

We could probably make this work if we cared enough.  However, we are
far outside any language rules at this point.

This fixes PR21834.

llvm-svn: 235818

1 files changed, 5 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaInit.cpp b/clang/lib/Sema/SemaInit.cpp
index 3ee1a7f8ad4..eef9272cca1 100644
--- a/clang/lib/Sema/SemaInit.cpp
+++ b/clang/lib/Sema/SemaInit.cpp
@@ -3438,6 +3438,11 @@ static void TryReferenceListInitialization(Sema &S,
     Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList);
     return;
   }
+  // Can't reference initialize a compound literal.
+  if (Entity.getKind() == InitializedEntity::EK_CompoundLiteralInit) {
+    Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList);
+    return;
+  }
 
   QualType DestType = Entity.getType();
   QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType();