1 files changed, 55 insertions, 0 deletions
diff --git a/gnulib-tests/test-calloc-gnu.c b/gnulib-tests/test-calloc-gnu.c
new file mode 100644
index 0000000..c13ba47
--- /dev/null
+++ b/gnulib-tests/test-calloc-gnu.c
@@ -0,0 +1,55 @@
+/* Test of calloc function.
+   Copyright (C) 2010-2020 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 3 of the License, 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/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+/* Return 8.
+   Usual compilers are not able to infer something about the return value.  */
+static unsigned int
+eight (void)
+{
+  unsigned int x = rand ();
+  unsigned int y = x * x * x * x;
+  x++; y |= x * x * x * x;
+  x++; y |= x * x * x * x;
+  x++; y |= x * x * x * x;
+  y = y >> 1;
+  return y & -y;
+}
+
+int
+main ()
+{
+  /* Check that calloc (0, 0) is not a NULL pointer.  */
+  void *p = calloc (0, 0);
+  if (p == NULL)
+    return 1;
+  free (p);
+
+  /* Check that calloc fails when requested to allocate a block of memory
+     larger than SIZE_MAX bytes.
+     We use eight (), not 8, to avoid a compiler warning from GCC 7.  */
+  p = calloc ((size_t) -1 / 8 + 1, eight ());
+  if (p != NULL)
+    {
+      free (p);
+      return 1;
+    }
+
+  return 0;
+}