From e5ffea20e9238db27b789220ff971aa66e617653 Mon Sep 17 00:00:00 2001
From: root <root>
Date: Sun, 19 Jul 2009 03:49:04 +0000
Subject: *** empty log message ***

---
 Changes |  6 ++++--
 ev.c    | 36 +++++++++++++++++++++++++++++++++++-
 2 files changed, 39 insertions(+), 3 deletions(-)

diff --git a/Changes b/Changes
index d92940b..27e9e45 100644
--- a/Changes
+++ b/Changes
@@ -2,11 +2,13 @@ Revision history for libev, a high-performance and full-featured event loop.
 
 TODO: ev_walk
 TODO: signal handling per loop
-TODO: signalfd
 
-TODO: document signalfd procmask
+TODO: nsig
 	- incompatible change: do not necessarily reset signal handler
           to SIG_DFL when a sighandler is stopped.
+        - ev_default_destroy did not properly set one member to zero,
+          potentially causing crashes and memory corruption on repated
+          ev_default_destroy/ev_default_loop calls.
 	- take advantage of signalfd on GNU/Linux systems.
 	- document that the signal mask might be in an unspecified
           state when using libev's signal handling.
diff --git a/ev.c b/ev.c
index 15e338d..6a633f2 100644
--- a/ev.c
+++ b/ev.c
@@ -188,6 +188,40 @@ extern "C" {
 
 /* this block tries to deduce configuration from header-defined symbols and defaults */
 
+/* try to deduce the maximum number of signals on this platform */
+#if defined (EV_NSIG)
+/* use what's provided */
+#elif defined (NSIG)
+# define EV_NSIG (NSIG)
+#elif defined(_NSIG)
+# define EV_NSIG (_NSIG)
+#elif defined (SIGMAX)
+# define EV_NSIG (SIGMAX+1)
+#elif defined (SIG_MAX)
+# define EV_NSIG (SIG_MAX+1)
+#elif defined (_SIG_MAX)
+# define EV_NSIG (_SIG_MAX+1)
+#elif defined (MAXSIG)
+# define EV_NSIG (MAXSIG+1)
+#elif defined (MAX_SIG)
+# define EV_NSIG (MAX_SIG+1)
+#elif defined (SIGARRAYSIZE)
+# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
+#elif defined (_sys_nsig)
+# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
+#else
+# error "unable to find value for NSIG, please report"
+/* to make it compile regardless, just remove the above line */
+# define EV_NSIG 64
+#endif
+
+/* Default to some arbitrary number that's big enough to get most
+   of the common signals.
+*/
+#ifndef NSIG
+#    define NSIG 50
+#endif
+/* <-- NSIG logic from Configure */
 #ifndef EV_USE_CLOCK_SYSCALL
 # if __linux && __GLIBC__ >= 2
 #  define EV_USE_CLOCK_SYSCALL 1
@@ -1632,7 +1666,7 @@ loop_destroy (EV_P)
 #endif
     }
 
-  ev_free (anfds); anfdmax = 0;
+  ev_free (anfds); anfds = 0; anfdmax = 0;
 
   /* have to use the microsoft-never-gets-it-right macro */
   array_free (rfeed, EMPTY);
-- 
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