From d590e26e6f9ed6f8b5456b99c2c52322d87c46de Mon Sep 17 00:00:00 2001
From: Arnaud Fontaine <arnau@debian.org>
Date: Wed, 16 Dec 2009 00:55:20 +0100
Subject: xcb_ewmh_send_client_message: check whether the data fit the
 ClientMessage

---
 ewmh/ewmh.c.m4 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ewmh/ewmh.c.m4 b/ewmh/ewmh.c.m4
index 0b3fb09..50e49a0 100644
--- a/ewmh/ewmh.c.m4
+++ b/ewmh/ewmh.c.m4
@@ -491,6 +491,8 @@ xcb_ewmh_send_client_message(xcb_connection_t *c,
   ev.format = 32;
   ev.type = atom;
 
+  assert(data_len <= (5 * sizeof(uint32_t)));
+
   memcpy(ev.data.data32, data, data_len);
 
   return xcb_send_event(c, 0, dest, XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
-- 
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