X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=doc%2Fman%2Flttng-ust.3;h=5be3cfaa081a669cb8d9b9e990117dd63f9bc735;hb=efbad5cc87395d00fa1d578ae211aee431fa3b4a;hp=5effb9f5a3b8b5c63f27cc686bd2a5daa46f0eeb;hpb=77ca1460d75b4f364aeb2002673569c69e59ecc8;p=lttng-ust.git

diff --git a/doc/man/lttng-ust.3 b/doc/man/lttng-ust.3
index 5effb9f5..5be3cfaa 100644
--- a/doc/man/lttng-ust.3
+++ b/doc/man/lttng-ust.3
@@ -123,6 +123,10 @@ TRACEPOINT_EVENT(
 		 * ctf_sequence: a dynamically-sized array.
 		 * args: (type, field name, argument expression,
 		 *	type of length expression, length expression)
+		 * The "type of length expression" needs to be an
+		 * unsigned type. As a reminder, "unsigned char" should
+		 * be preferred to "char", since the signedness of
+		 * "char" is implementation-defined.
 		 */ 
 		ctf_sequence(char, seqfield1, text,
 			     size_t, textlen)