* ext/socket/ancdata.c (bsock_recvmsg_internal): stretch the buffer size

when EMSGSIZE occurs on non HAVE_STRUCT_MSGHDR_MSG_CONTROL platforms
  (such as, Windows).  fixes a test error revealed by r52625.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52631 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Wed Nov 18 10:33:06 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* ext/socket/ancdata.c (bsock_recvmsg_internal): stretch the buffer size
+	  when EMSGSIZE occurs on non HAVE_STRUCT_MSGHDR_MSG_CONTROL platforms
+	  (such as, Windows).  fixes a test error revealed by r52625.
+
 Wed Nov 18 10:12:36 2015  Eric Wong  <e@80x24.org>
 
 	* ext/socket/ancdata.c (bsock_recvmsg_internal): use 4096 as

ext/socket/ancdata.c

@@ -1570,6 +1570,10 @@ bsock_recvmsg_internal(VALUE sock,
             gc_done = 1;
 	    goto retry;
         }
+#else
+	if (grow_buffer && errno == EMSGSIZE)
+	    ss = (ssize_t)iov.iov_len;
+	else
 #endif
 	rb_sys_fail("recvmsg(2)");
     }