It expects ((msg_controllen == 0) == (msg_control == NULL)), and returns EINVAL otherwise. It can't hurt to be tidy about things on other platforms either though.
See: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=99356#c5 Signed-off-by: Philip Withnall <philip at tecnocode.co.uk> Signed-off-by: Karsten Otto <ottoka at posteo.de> --- Updated as per Bill Spitzak’s recommendation to make the change more concise. --- src/connection.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/connection.c b/src/connection.c index f292853..1e271c4 100644 --- a/src/connection.c +++ b/src/connection.c @@ -287,7 +287,7 @@ wl_connection_flush(struct wl_connection *connection) msg.msg_namelen = 0; msg.msg_iov = iov; msg.msg_iovlen = count; - msg.msg_control = cmsg; + msg.msg_control = (clen > 0) ? cmsg : NULL; msg.msg_controllen = clen; msg.msg_flags = 0; -- 1.9.3
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