don't GC unregister null thread

[bpt/guile.git] / libguile / net_db.c

diff --git a/libguile/net_db.c b/libguile/net_db.c
index eb0c4c3..14722d5 100644 (file)
--- a/libguile/net_db.c
+++ b/libguile/net_db.c
@@ -1,5 +1,5 @@
 /* "net_db.c" network database support
- * Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2006, 2009, 2010 Free Software Foundation, Inc.
+ * Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2006, 2009, 2010, 2011 Free Software Foundation, Inc.
  * 
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
@@ -73,17 +73,6 @@ extern int h_errno;
 extern const char *hstrerror (int);
 #endif
 
-/* NetBSD 5.0 lacks the following flags.  */
-#ifndef AI_ALL
-# define AI_ALL 0
-#endif
-#ifndef AI_V4MAPPED
-# define AI_V4MAPPED 0
-#endif
-#ifndef AI_ADDRCONFIG
-# define AI_ADDRCONFIG 0
-#endif
-
 \f
 
 SCM_SYMBOL (scm_host_not_found_key, "host-not-found");
@@ -601,6 +590,11 @@ SCM_DEFINE (scm_getaddrinfo, "getaddrinfo", 1, 5, 0,
            "@item EAI_NONAME\n"
            "Either @var{name} does not resolve for the supplied parameters, "
            "or neither @var{name} nor @var{service} were supplied.\n\n"
+           "@item EAI_NODATA\n"
+           "This non-POSIX error code can be returned on GNU systems when a\n"
+           "request was actually made but returned no data, meaning\n"
+           "that no address is associated with @var{name}.  Error handling\n"
+           "code should be prepared to handle it when it is defined.\n\n"
            "@item EAI_SERVICE\n"
            "@var{service} was not recognized for the specified socket type.\n\n"
            "@item EAI_SOCKTYPE\n"