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diff --git a/os/xdmcp.c b/os/xdmcp.c
index b6e97c9..0e9e625 100644
--- a/os/xdmcp.c
+++ b/os/xdmcp.c
@@ -1409,8 +1409,16 @@ recv_alive_msg(unsigned length)
static void
XdmcpFatal(const char *type, ARRAY8Ptr status)
{
- FatalError("XDMCP fatal error: %s %*.*s\n", type,
- status->length, status->length, status->data);
+ char *error_message;
+
+ /* error_message is leaked, but that's fine, we're aborting */
+ error_message = malloc (status->length + 1);
+ if (!error_message)
+ FatalError("XDMCP fatal error: %s", type);
+
+ memcpy(error_message, status->data, status->length);
+ error_message[status->length] = '\0';
+ FatalError("XDMCP fatal error: %s %s\n", type, error_message);
}
static void
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