fix: add format attribute to relevant functions (-Wsuggest-attribute=format)

[lttng-ust.git] / doc / examples / demo-tracelog / demo-vtracelog.c

diff --git a/doc/examples/demo-tracelog/demo-vtracelog.c b/doc/examples/demo-tracelog/demo-vtracelog.c
index c3e604ce2aaec2f60de4c2f21fb02429a55bfa81..eed8677c4d4beb67da7dac7d2fa215cbd118a47d 100644 (file)
--- a/doc/examples/demo-tracelog/demo-vtracelog.c
+++ b/doc/examples/demo-tracelog/demo-vtracelog.c
@@ -1,19 +1,7 @@
 /*
- * Copyright (C) 2020  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; version 2.1 of
- * the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
 #include <stdarg.h>
@@ -23,6 +11,7 @@
 
 #include <lttng/tracelog.h>
 
+__attribute__((format(printf, 1, 2)))
 void print_err(const char* msg, ...)
 {
        va_list ap;