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-rw-r--r--man3/syslog.32
1 files changed, 2 insertions, 0 deletions
diff --git a/man3/syslog.3 b/man3/syslog.3
index 65eabdf8ae..723dc068d0 100644
--- a/man3/syslog.3
+++ b/man3/syslog.3
@@ -43,6 +43,8 @@ closelog, openlog, syslog \- send messages to the system logger
.br
.BI "void closelog(void);"
.sp
+.B #define _BSD_SOURCE
+.br
.B #include <stdarg.h>
.sp
.BI "void vsyslog(int " priority ", const char *" format ", va_list " ap );