Only install the segv_redirect handler if SEGV's handler is not currently

	* main.c (main): Only install the segv_redirect handler if SEGV's
	handler is not currently SIG_DFL. Otherwise you get an infinite
	SEGV loop if you run with GNOME_DISABLE_CRASH_DIALOG.

svn path=/trunk/; revision=10887

1 files changed, 10 insertions, 7 deletions

diff --git a/mail/main.c b/mail/main.c
index 0656b44555..35cd26faca 100644
--- a/mail/main.c
+++ b/mail/main.c
@@ -94,13 +94,16 @@ main (int argc, char *argv [])
 	gnome_init_with_popt_table ("evolution-mail-component", VERSION,
 				    argc, argv, oaf_popt_options, 0, NULL);
 
-	sa.sa_flags = 0;
-	sigemptyset (&sa.sa_mask);
-	sa.sa_handler = segv_redirect;
-	sigaction (SIGSEGV, &sa, &osa);
-	sigaction (SIGBUS, &sa, NULL);
-	sigaction (SIGFPE, &sa, NULL);
-	gnome_segv_handler = osa.sa_handler;
+	sigaction (SIGSEGV, NULL, &osa);
+	if (osa.sa_handler != SIG_DFL) {
+		sa.sa_flags = 0;
+		sigemptyset (&sa.sa_mask);
+		sa.sa_handler = segv_redirect;
+		sigaction (SIGSEGV, &sa, NULL);
+		sigaction (SIGBUS, &sa, NULL);
+		sigaction (SIGFPE, &sa, NULL);
+		gnome_segv_handler = osa.sa_handler;
+	}
 
 	orb = oaf_init (argc, argv);