From: NeilBrown <neilb@suse.de>
Date: Tue, 12 Feb 2013 04:00:38 +0000 (+1100)
Subject: vpatch: allow relevant signals to cause a core-dump.
X-Git-Tag: v1.0~66
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=7e6e3397189dd396e0a9c03ed234486da841761e;p=wiggle.git

vpatch: allow relevant signals to cause a core-dump.

We catch SIGBUS and SIGSEGV so the terminal can be reset.
But that means we don't see a core dump if there should be one.

So for those signals, clear the signal handler after reseting
the terminal, and return.  Then the core will be dumped.

Reported-by: Paul Wise <pabs3@bonedaddy.net>
---

diff --git a/vpatch.c b/vpatch.c
index 5a947dc..c7e84a6 100644
--- a/vpatch.c
+++ b/vpatch.c
@@ -2780,7 +2780,12 @@ static void catch(int sig)
 	nl();
 	endwin();
 	printf("Died on signal %d\n", sig);
-	exit(2);
+	fflush(stdout);
+	if (sig != SIGBUS && sig != SIGSEGV)
+		exit(2);
+	else
+		/* Otherwise return and die */
+		signal(sig, NULL);
 }
 
 static void term_init(void)