[PATCH v3 4/9] write_or_die.c: replace signal() with sigaction()

From the signal(2) man page:

  The behavior of signal() varies across UNIX versions, and has also var‐
  ied historically across different versions of Linux.   Avoid  its  use:
  use sigaction(2) instead.

Replaced signal() with sigaction() in write_or_die.c

Signed-off-by: Jeremiah Mahler <redacted>
---
 write_or_die.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/write_or_die.c b/write_or_die.c
index b50f99a..f5fdec8 100644
--- a/write_or_die.c
+++ b/write_or_die.c

@@ -2,8 +2,12 @@
 
 static void check_pipe(int err)
 {
+	struct sigaction sa;
+
 	if (err == EPIPE) {
-		signal(SIGPIPE, SIG_DFL);
+		memset(&sa, 0, sizeof(sa));
+		sa.sa_handler = SIG_DFL;
+		sigaction(SIGPIPE, &sa, NULL);
 		raise(SIGPIPE);
 		/* Should never happen, but just in case... */
 		exit(141);

-- 
2.0.0.8.g7bf6e1f.dirty