--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/cpp0x/cond1.C	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,17 @@
+// PR c++/84588
+// { dg-do compile { target c++11 } }
+
+void foo()
+{
+  if (int bar() {});  // { dg-error "condition declares a function" }
+
+  for (;int bar() {};);  // { dg-error "condition declares a function" }
+
+  while (int bar() {});  // { dg-error "condition declares a function" }
+
+  if (int a[] {});  // { dg-error "condition declares an array" }
+
+  for (;int a[] {};);  // { dg-error "condition declares an array" }
+
+  while (int a[] {});  // { dg-error "condition declares an array" }
+}