--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/noncompile/pr30552-3.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,15 @@
+/* PR c/30552 */
+
+/* Related example where statement expression used as old-style formal array 
+ * argument size in an invalid nested function declaration should generate 
+ * user error, not internal compiler error. */
+
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+int main()
+{
+  int g()
+    int a[( {int b} )]; /* { dg-error "braced-group within expression allowed only inside a function|declaration for parameter" } */
+  return 0; /* { dg-error "expected declaration specifiers before" } */
+} /* { dg-error "expected declaration specifiers before|end of input|expected declaration or statement at end of input" } */