From 9cc0a7f4ab4b0584bf06a4713563d96e4a3a9a72 Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fl.fischer@fau.de>
Date: Sun, 29 Sep 2019 23:49:17 +0200
Subject: catch SIGSEGV as well; register sa_handlers only if its SIG_DLF
 before

---
 src/sig_handlers.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 src/sig_handlers.c

(limited to 'src/sig_handlers.c')

diff --git a/src/sig_handlers.c b/src/sig_handlers.c
new file mode 100644
index 0000000..601e454
--- /dev/null
+++ b/src/sig_handlers.c
@@ -0,0 +1,36 @@
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void abnormal_termination_handler(int signo) {
+	exit(signo);
+}
+
+static void __attribute__((constructor)) register_handlers(void)
+{
+	struct sigaction sa, old_sa;
+	sa.sa_handler = abnormal_termination_handler;
+	sigemptyset(&sa.sa_mask);
+
+	sigaction(SIGABRT, NULL, &old_sa);
+	if (old_sa.sa_handler == SIG_DFL) {
+		if (sigaction(SIGABRT, &sa, NULL) == -1) {
+			perror("sigaction");
+			exit(1);
+		}
+	} else {
+		fprintf(stderr, "SIGABRT handler already set");
+	}
+
+	sigaction(SIGSEGV, NULL, &old_sa);
+	if (old_sa.sa_handler == SIG_DFL) {
+		if (sigaction(SIGSEGV, &sa, NULL) == -1) {
+			perror("sigaction");
+			exit(1);
+		}
+	} else {
+		fprintf(stderr, "SIGSEGV handler already set");
+	}
+}
+
-- 
cgit v1.2.3


From cc7edda1871c89c7476c67eacf3e6aee56262e2d Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fl.fischer@fau.de>
Date: Mon, 30 Sep 2019 00:04:18 +0200
Subject: print signal message before exit

---
 src/sig_handlers.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/sig_handlers.c')

diff --git a/src/sig_handlers.c b/src/sig_handlers.c
index 601e454..3274482 100644
--- a/src/sig_handlers.c
+++ b/src/sig_handlers.c
@@ -4,6 +4,7 @@
 #include <string.h>
 
 static void abnormal_termination_handler(int signo) {
+	psignal(signo, "");
 	exit(signo);
 }
 
-- 
cgit v1.2.3