getcontext.3: Mention SA_SIGINFO flag when talking about 3-argument signal handler

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

1 files changed, 5 insertions, 2 deletions

diff --git a/man3/getcontext.3 b/man3/getcontext.3
index d3d7640df6..fd34784963 100644
--- a/man3/getcontext.3
+++ b/man3/getcontext.3
@@ -109,8 +109,11 @@ The context should have been obtained by a call of
 .BR getcontext (),
 or
 .BR makecontext (3),
-or passed as the third argument to a signal
-handler.
+or received as the third argument to a signal
+handler (see the dicussion of the
+.BR SA_SIGINFO
+flag in
+.BR sigaction (2)).
 .PP
 If the context was obtained by a call of
 .BR getcontext (),