--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/vect/pr84556.cc	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,21 @@
+// PR c++/84556
+// { dg-do run { target c++11 } }
+// { dg-options "-O2 -fopenmp-simd" }
+// { dg-additional-options "-mavx" { target avx_runtime } }
+
+int
+main ()
+{
+  int y[8] = { 1, 2, 3, 4, 5, 6, 7, 8 };
+  auto x = [&y] ()
+  {
+    #pragma omp simd
+    for (int i = 0; i < 8; ++i)
+      y[i]++;
+  };
+  x ();
+  x ();
+  for (int i = 0; i < 8; ++i)
+    if (y[i] != i + 3)
+      __builtin_abort ();
+}