yugui	2009-01-16 00:38:42 +0900 (Fri, 16 Jan 2009)

  New Revision: 21558

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=21558

  Log:
    merges r21505 from trunk into ruby_1_9_1.
    * ext/socket/extconf.rb (gai_strerror): checks if available and if
      returns const pointer.
    * ext/socket/getaddrinfo.c (gai_strerror): defines only if non
      available.  [ruby-core:21328]

  Modified files:
    branches/ruby_1_9_1/ChangeLog
    branches/ruby_1_9_1/ext/socket/extconf.rb
    branches/ruby_1_9_1/ext/socket/getaddrinfo.c

Index: ruby_1_9_1/ChangeLog
===================================================================
--- ruby_1_9_1/ChangeLog	(revision 21557)
+++ ruby_1_9_1/ChangeLog	(revision 21558)
@@ -1,3 +1,11 @@
+Wed Jan 14 13:09:00 2009  Nobuyoshi Nakada  <nobu@r...>
+
+	* ext/socket/extconf.rb (gai_strerror): checks if available and if
+	  returns const pointer.
+
+	* ext/socket/getaddrinfo.c (gai_strerror): defines only if non
+	  available.  [ruby-core:21328]
+
 Wed Jan 14 12:39:16 2009  Nobuyoshi Nakada  <nobu@r...>
 
 	* io.c (rb_io_wait_readable, rb_io_wait_writable): need rb_fd_ptr.
Index: ruby_1_9_1/ext/socket/getaddrinfo.c
===================================================================
--- ruby_1_9_1/ext/socket/getaddrinfo.c	(revision 21557)
+++ ruby_1_9_1/ext/socket/getaddrinfo.c	(revision 21558)
@@ -39,6 +39,9 @@
  */
 
 #include "ruby/config.h"
+#ifdef RUBY_EXTCONF_H
+#include RUBY_EXTCONF_H
+#endif
 #include <sys/types.h>
 #ifndef _WIN32
 #include <sys/param.h>
@@ -195,8 +198,8 @@
 
 #define ERR(err) { error = (err); goto bad; }
 
-#ifndef __HAIKU__
-#if defined __UCLIBC__
+#ifndef HAVE_GAI_STRERROR
+#ifdef GAI_STRERROR_CONST
 const
 #endif
 char *
Index: ruby_1_9_1/ext/socket/extconf.rb
===================================================================
--- ruby_1_9_1/ext/socket/extconf.rb	(revision 21557)
+++ ruby_1_9_1/ext/socket/extconf.rb	(revision 21558)
@@ -254,6 +254,19 @@
   have_func("inet_ntop") or have_func("inet_ntoa")
   have_func("inet_pton") or have_func("inet_aton")
   have_func("getservbyport")
+  if have_func("gai_strerror")
+    unless checking_for("gai_strerror() returns const pointer") {!try_compile(<<EOF)}
+#{cpp_include(headers)}
+#include <stdlib.h>
+void
+conftest_gai_strerror_is_const()
+{
+    *gai_strerror(0) = 0;
+}
+EOF
+      $defs << "-DGAI_STRERROR_CONST"
+    end
+  end
   have_header("arpa/nameser.h")
   have_header("resolv.h")
 end

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