Start configure split.

1 files changed, 82 insertions, 0 deletions

diff --git a/lib/gl/tests/test-memcmp.c b/lib/gl/tests/test-memcmp.c
new file mode 100644
index 0000000000..50342cb968
--- /dev/null
+++ b/lib/gl/tests/test-memcmp.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2008 Free Software Foundation
+ * Written by Simon Josefsson
+ *
+ * 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 <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define ASSERT(expr) \
+  do									     \
+    {									     \
+      if (!(expr))							     \
+	{								     \
+	  fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+	  fflush (stderr);						     \
+	  abort ();							     \
+	}								     \
+    }									     \
+  while (0)
+
+int
+main (void)
+{
+  void *nil = NULL; /* Use to avoid gcc attribute((nonnull)) warnings.  */
+
+  /* Test equal / not equal distinction.  */
+  ASSERT (memcmp (nil, nil, 0) == 0);
+  ASSERT (memcmp ("foo", "foobar", 2) == 0);
+  ASSERT (memcmp ("foo", "foobar", 3) == 0);
+  ASSERT (memcmp ("foo", "foobar", 4) != 0);
+  ASSERT (memcmp ("foo", "bar", 1) != 0);
+  ASSERT (memcmp ("foo", "bar", 3) != 0);
+
+  /* Test less / equal / greater distinction.  */
+  ASSERT (memcmp ("foo", "moo", 4) < 0);
+  ASSERT (memcmp ("moo", "foo", 4) > 0);
+  ASSERT (memcmp ("oomph", "oops", 3) < 0);
+  ASSERT (memcmp ("oops", "oomph", 3) > 0);
+  ASSERT (memcmp ("foo", "foobar", 4) < 0);
+  ASSERT (memcmp ("foobar", "foo", 4) > 0);
+
+  /* Some old versions of memcmp were not 8-bit clean.  */
+  ASSERT (memcmp ("\100", "\201", 1) < 0);
+  ASSERT (memcmp ("\201", "\100", 1) > 0);
+  ASSERT (memcmp ("\200", "\201", 1) < 0);
+  ASSERT (memcmp ("\201", "\200", 1) > 0);
+
+  /* The Next x86 OpenStep bug shows up only when comparing 16 bytes
+     or more and with at least one buffer not starting on a 4-byte boundary.
+     William Lewis provided this test program.   */
+  {
+    char foo[21];
+    char bar[21];
+    int i;
+    for (i = 0; i < 4; i++)
+      {
+	char *a = foo + i;
+	char *b = bar + i;
+	strcpy (a, "--------01111111");
+	strcpy (b, "--------10000000");
+	ASSERT (memcmp (a, b, 16) < 0);
+      }
+  }
+
+  return 0;
+}