1 files changed, 61 insertions, 0 deletions
diff --git a/tests/test-calloc-posix.c b/tests/test-calloc-posix.c
new file mode 100644
index 00000000..702c7b6a
--- /dev/null
+++ b/tests/test-calloc-posix.c
@@ -0,0 +1,61 @@
+/* Test of calloc function.
+   Copyright (C) 2024-2025 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>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#include "macros.h"
+
+/* Work around clang bug
+   <https://github.com/llvm/llvm-project/issues/114772>.  */
+void *(*volatile my_calloc) (size_t, size_t) = calloc;
+#undef calloc
+#define calloc my_calloc
+
+int
+main ()
+{
+  /* Check that calloc sets errno when it fails.
+     Do this only in 64-bit processes, because there are many bi-arch systems
+     nowadays where a 32-bit process can actually allocate 2 GiB of RAM.  */
+  if (sizeof (size_t) >= 8)
+    {
+      void *p;
+
+      errno = 0;
+      p = calloc (SIZE_MAX / 20, 2);
+      ASSERT (p == NULL);
+      ASSERT (errno == ENOMEM);
+
+      errno = 0;
+      p = calloc (SIZE_MAX / 6, 2);
+      ASSERT (p == NULL);
+      ASSERT (errno == ENOMEM);
+
+      return test_exit_status;
+    }
+  else
+    {
+      fputs ("Skipping test: size_t is not 64-bits wide\n", stderr);
+      return 77;
+    }
+}