1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/cp/semantics.c b/gcc/cp/semantics.c
index ea01eb3..05c5168 100644
--- a/gcc/cp/semantics.c
+++ b/gcc/cp/semantics.c
@@ -5521,6 +5521,11 @@ tree
 lambda_return_type (tree expr)
 {
   tree type;
+  if (BRACE_ENCLOSED_INITIALIZER_P (expr))
+    {
+      warning (0, "cannot deduce lambda return type from a braced-init-list");
+      return void_type_node;
+    }
   if (type_dependent_expression_p (expr))
     {
       type = cxx_make_type (DECLTYPE_TYPE);