BUG/MINOR: don't ignore SIG{BUS,FPE,ILL,SEGV} during signal processing
We don't have any reason of blocking those signals.
If SIGBUS, SIGFPE, SIGILL, or SIGSEGV are generated while they are blocked, the
result is undefined, unless the signal was generated by kill(2), sigqueue(3), or
raise(3).
This should be backported to 1.8.
diff --git a/src/signal.c b/src/signal.c
index f1f6821..0dadd76 100644
--- a/src/signal.c
+++ b/src/signal.c
@@ -120,6 +120,14 @@
sigfillset(&blocked_sig);
sigdelset(&blocked_sig, SIGPROF);
+ /* man sigprocmask: If SIGBUS, SIGFPE, SIGILL, or SIGSEGV are
+ generated while they are blocked, the result is undefined, unless
+ the signal was generated by kill(2),
+ sigqueue(3), or raise(3) */
+ sigdelset(&blocked_sig, SIGBUS);
+ sigdelset(&blocked_sig, SIGFPE);
+ sigdelset(&blocked_sig, SIGILL);
+ sigdelset(&blocked_sig, SIGSEGV);
for (sig = 0; sig < MAX_SIGNAL; sig++)
LIST_INIT(&signal_state[sig].handlers);