* g++.dg/cpp1z/constexpr-lambda22.C: New test,

From-SVN: r265725

gcc/testsuite/ChangeLog

+2018-11-01  Marek Polacek  <polacek@redhat.com>
+
+	* g++.dg/cpp1z/constexpr-lambda22.C: New test,
+
 2018-11-01  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
 
 	* gcc.dg/tree-ssa/cunroll-13.c: Add missing cast from literal to int32.

gcc/testsuite/g++.dg/cpp1z/constexpr-lambda22.C

+// { dg-do compile }
+// { dg-options -std=c++17 }
+
+#define SA(X) static_assert((X),#X)
+
+template<typename>
+constexpr int
+foo ()
+{
+  constexpr int a[] = { 1, 2, 3, 4, 5 };
+  int i = 0;
+  auto j = [&] {
+    for (auto x : a)
+      i++;
+    return i;
+  }();
+  return j;
+}
+
+SA (foo<int>() == 5);