strsignal.3: Note that 'sys_siglist' is nonstandard

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man3/strsignal.3 b/man3/strsignal.3
index 872c50910fcd154883ebe9d7d3348b1431f51c4f..5f003a21112ddeb66c5fa11419ff08c6edc53119 100644 (file)
--- a/man3/strsignal.3
+++ b/man3/strsignal.3
@@ -106,8 +106,12 @@ T} Thread safety   MT-Unsafe race:strsignal locale
 .TE
 .sp 1
 .SH CONFORMING TO
+.BR strsignal ():
 POSIX.1-2008.
 Present on Solaris and the BSDs.
+.PP
+.I sys_siglist
+is nonstandard, but present on many other systems.
 .SH SEE ALSO
 .BR psignal (3),
 .BR strerror (3)