diff --git a/gcc/testsuite/g++.dg/ext/restrict1.C b/gcc/testsuite/g++.dg/ext/restrict1.C
new file mode 100644
index 000000000000..049af1fa439f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/restrict1.C
@@ -0,0 +1,7 @@
+// PR c++/6392
+// { dg-do compile }
+
+struct A
+{
+  int* __restrict__ data[10];
+};