[hackers] [st][PATCH] replace exit(3) by _exit(2) in signal handler sigchld()

From: Jan Klemkow <j.klemkow_AT_wemelug.de>
Date: Thu, 30 Apr 2020 00:10:02 +0200

exit(3) is not async-signal-safe but, _exit(2) is.
This change prevents st to crash and dump core.

---
 st.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/st.c b/st.c
index 0ce6ac2..2bf133f 100644
--- a/st.c
+++ b/st.c
_AT_@ -730,7 +730,7 @@ sigchld(int a)
 		die("child exited with status %d\n", WEXITSTATUS(stat));
 	else if (WIFSIGNALED(stat))
 		die("child terminated due to signal %d\n", WTERMSIG(stat));
-	exit(0);
+	_exit(0);
 }
 
 void
-- 
2.24.1

Received on Thu Apr 30 2020 - 00:10:02 CEST