1 files changed, 53 insertions, 0 deletions
diff --git a/src/grep/gnulib-tests/test-dynarray.c b/src/grep/gnulib-tests/test-dynarray.c
new file mode 100644
index 0000000..c3f9a29
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dynarray.c
@@ -0,0 +1,53 @@
+/* Test of type-safe arrays that grow dynamically.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2021.  */
+
+#include <config.h>
+
+#define DYNARRAY_STRUCT int_sequence
+#define DYNARRAY_ELEMENT int
+#define DYNARRAY_PREFIX intseq_
+#include "dynarray.h"
+
+#include "macros.h"
+
+#define N 100000
+
+static int
+value_at (long long int i)
+{
+  return (i % 13) + ((i * i) % 251);
+}
+
+int
+main ()
+{
+  struct int_sequence s;
+  int i;
+
+  intseq_init (&s);
+  for (i = 0; i < N; i++)
+    intseq_add (&s, value_at (i));
+  for (i = N - 1; i >= N / 2; i--)
+    {
+      ASSERT (* intseq_at (&s, i) == value_at (i));
+      intseq_remove_last (&s);
+    }
+  intseq_free (&s);
+
+  return 0;
+}