diff --git a/tests/syntax/oracle/rename.res.oracle b/tests/syntax/oracle/rename.res.oracle
index 1397bafc86be6f4e80c311a454cc85d5d58232d2..52e6869da0887ef55a31547b8483fa061a1024d4 100644
--- a/tests/syntax/oracle/rename.res.oracle
+++ b/tests/syntax/oracle/rename.res.oracle
@@ -1,8 +1,16 @@
 [kernel] Parsing tests/syntax/rename.i (no preprocessing)
+[kernel] tests/syntax/rename.i:48: Warning: 
+  unnamed fields are a C11 extension (use -c11 to avoid this warning)
 /* Generated by Frama-C */
 struct not_anon {
    int __anonCompField1 ;
 };
+struct __anonstruct_1 {
+   int inner_i ;
+};
+struct anon {
+   struct __anonstruct_1 __anonCompField1 ;
+};
 int f(void)
 {
   int x = 0;
@@ -66,4 +74,5 @@ void f4(int *j_0_1)
 }
 
 struct not_anon s = {.__anonCompField1 = 0};
+struct anon a = {.__anonCompField1 = {.inner_i = 0}};
 
diff --git a/tests/syntax/rename.i b/tests/syntax/rename.i
index 201ece889710f196e2646a40a221704c7b6422ef..08a549ccc24c4a4c1d072dcbc7046321a8da60e6 100644
--- a/tests/syntax/rename.i
+++ b/tests/syntax/rename.i
@@ -44,3 +44,9 @@ struct not_anon {
 };
 
 struct not_anon s = {.__anonCompField1 = 0};
+
+struct anon {
+  struct { int inner_i; };
+};
+
+struct anon a = { .inner_i = 0 };