* win32/win32.c (finish_overlapped_socket): ignore EMSGSIZE when input,

  because POSIX platforms just do so.  fixes test errors revealed by
  r52647.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52662 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Thu Nov 19 13:57:58 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* win32/win32.c (finish_overlapped_socket): ignore EMSGSIZE when input,
+	  because POSIX platforms just do so.  fixes test errors revealed by
+	  r52647.
+
 Thu Nov 19 02:52:30 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* ext/socket/ancdata.c (bsock_recvmsg_internal): stretch the buffer size

win32/win32.c

@@ -3276,8 +3276,13 @@ finish_overlapped_socket(BOOL input, SOCKET s, WSAOVERLAPPED *wol, int result, D
 	  default:
 	    if ((err = WSAGetLastError()) == WSAECONNABORTED && !input)
 		errno = EPIPE;
+	    else if (err == WSAEMSGSIZE && input) {
+		result = TRUE;
+		*len = size;
+		break;
+	    }
 	    else
-		errno = map_errno(WSAGetLastError());
+		errno = map_errno(err);
 	    /* thru */
 	  case WAIT_OBJECT_0 + 1:
 	    /* interrupted */