3 files changed, 51 insertions, 1 deletions

diff --git a/libX11/modules/im/ximcp/imDefIc.c b/libX11/modules/im/ximcp/imDefIc.c
index 3b5fa4147..f7e484789 100644
--- a/libX11/modules/im/ximcp/imDefIc.c
+++ b/libX11/modules/im/ximcp/imDefIc.c
@@ -927,6 +927,30 @@ _XimProtoDestroyIC(
     return;
 }
 
+/*
+ * Some functions require the request queue from the server to be flushed
+ * so that the ordering of client initiated status changes and those requested
+ * by the server is well defined.
+ * _XimSync() would be the function of choice here as it should get a
+ * XIM_SYNC_REPLY back from the server.
+ * This however isn't implemented in the piece of junk that is used by most
+ * input servers as the server side protocol if to XIM.
+ * Since this code is not shipped as a library together with the client side
+ * XIM code but is duplicated by every input server around the world there
+ * is no easy fix to this but this ugly hack below.
+ * Obtaining an IC value from the server sends a request and empties out the
+ * event/server request queue until the answer to this request is found.
+ * Thus it is guaranteed that any pending server side request gets processed.
+ * This is what the hack below is doing.
+ */
+
+static void
+BrokenSyncWithServer(XIC xic)
+{
+    CARD32 dummy;
+    XGetICValues(xic, XNFilterEvents, &dummy, NULL);
+}
+
 static void
 _XimProtoSetFocus(
     XIC		 xic)
@@ -957,6 +981,7 @@ _XimProtoSetFocus(
 	}
     }
 #endif /* XIM_CONNECTABLE */
+    BrokenSyncWithServer(xic);
 
     buf_s[0] = im->private.proto.imid;		/* imid */
     buf_s[1] = ic->private.proto.icid;		/* icid */
@@ -1003,6 +1028,8 @@ _XimProtoUnsetFocus(
     }
 #endif /* XIM_CONNECTABLE */
 
+    BrokenSyncWithServer(xic);
+
     buf_s[0] = im->private.proto.imid;		/* imid */
     buf_s[1] = ic->private.proto.icid;		/* icid */
 
diff --git a/libX11/modules/im/ximcp/imDefLkup.c b/libX11/modules/im/ximcp/imDefLkup.c
index 0a9553a41..b4315894f 100644
--- a/libX11/modules/im/ximcp/imDefLkup.c
+++ b/libX11/modules/im/ximcp/imDefLkup.c
@@ -269,6 +269,8 @@ _XimForwardEventCore(
     int		 ret_code;
     INT16	 len;
 
+    bzero(buf32, sizeof(buf32)); /* valgrind noticed uninitialized memory use! */
+
     if (!(len = _XimSetEventToWire(ev, (xEvent *)&buf_s[4])))
 	return False;				/* X event */
 
@@ -704,7 +706,11 @@ _XimCommitRecv(
 
     (void)_XimRespSyncReply(ic, flag);
 
-    MARK_FABRICATED(im);
+    if (ic->private.proto.registed_filter_event
+	& (KEYPRESS_MASK | KEYRELEASE_MASK))
+	    MARK_FABRICATED(im);
+
+    bzero(&ev, sizeof(ev));	/* uninitialized : found when running kterm under valgrind */
 
     ev.type = KeyPress;
     ev.send_event = False;
@@ -713,6 +719,15 @@ _XimCommitRecv(
     ev.keycode = 0;
     ev.state = 0;
 
+    ev.time = 0L;
+    ev.serial = LastKnownRequestProcessed(im->core.display);
+    /* FIXME :
+       I wish there were COMMENTs (!) about the data passed around.
+    */
+#if 0
+    fprintf(stderr,"%s,%d: putback k press   FIXED ev.time=0 ev.serial=%lu\n", __FILE__, __LINE__, ev.serial);
+#endif
+
     XPutBackEvent(im->core.display, (XEvent *)&ev);
 
     return True;
diff --git a/libX11/modules/im/ximcp/imTrans.c b/libX11/modules/im/ximcp/imTrans.c
index 4bdecb2ef..a8cd95e8f 100644
--- a/libX11/modules/im/ximcp/imTrans.c
+++ b/libX11/modules/im/ximcp/imTrans.c
@@ -222,12 +222,20 @@ _XimTransInternalConnection(
 
     if (spec->is_putback)
 	return;
+
+    bzero(&ev, sizeof(ev));	/* FIXME: other fields may be accessed, too. */
     kev = (XKeyEvent *)&ev;
     kev->type = KeyPress;
     kev->send_event = False;
     kev->display = im->core.display;
     kev->window = spec->window;
     kev->keycode = 0;
+    kev->time = 0L;
+    kev->serial = LastKnownRequestProcessed(im->core.display);
+#if 0
+    fprintf(stderr,"%s,%d: putback FIXED kev->time=0 kev->serial=%lu\n", __FILE__, __LINE__, kev->serial);
+#endif
+
     XPutBackEvent(im->core.display, &ev);
     XFlush(im->core.display);
     spec->is_putback = True;