1 files changed, 63 insertions, 0 deletions
diff --git a/inet/tst-gethnm.c b/inet/tst-gethnm.c
new file mode 100644
index 0000000000..fe8e416de0
--- /dev/null
+++ b/inet/tst-gethnm.c
@@ -0,0 +1,63 @@
+/* Based on a test case by grd@algonet.se.  */
+
+#include <netdb.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+int
+main (void)
+{
+  struct hostent *ent;
+  struct in_addr hostaddr;
+  int result = 0;
+
+  inet_aton ("127.0.0.1", (struct in_addr *) &hostaddr.s_addr);
+  ent = gethostbyaddr (&hostaddr, sizeof (hostaddr), AF_INET);
+  if (ent == NULL)
+    puts ("gethostbyaddr (...) == NULL");
+  else
+    {
+      puts ("Using gethostbyaddr(..):");
+      printf ("h_name: %s\n", ent->h_name);
+
+      if (ent->h_aliases == NULL)
+	puts ("ent->h_aliases == NULL");
+      else
+	printf ("h_aliases[0]: %s\n", ent->h_aliases[0]);
+    }
+
+  ent = gethostbyname ("127.0.0.1");
+  if (ent == NULL)
+    {
+      puts ("gethostbyname (\"127.0.0.1\") == NULL");
+      result = 1;
+    }
+  else
+    {
+      printf ("\nNow using gethostbyname(..):\n");
+      printf ("h_name: %s\n", ent->h_name);
+      if (strcmp (ent->h_name, "127.0.0.1") != 0)
+	{
+	  puts ("ent->h_name != \"127.0.0.1\"");
+	  result = 1;
+	}
+
+      if (ent->h_aliases == NULL)
+	{
+	  puts ("ent->h_aliases == NULL");
+	  result = 1;
+	}
+      else
+	{
+	  printf ("h_aliases[0]: %s\n", ent->h_aliases[0]);
+	  result |= ent->h_aliases[0] != NULL;
+	}
+    }
+
+  return result;
+}