diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 7b2156afe..7e9d9ea1e 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,13 @@
+2012-12-07  Christopher Faylor  <me.cygwin2012@cgf.cx>
+
+	* sigproc.h (sigpacket): Remove parameter names from declarations.
+	(sigpacket::sigtls): Rename from 'tls'.
+	* exceptions.cc (sigpacket::process): Define local tls variable and
+	assign that to sigtls if appropriate.  Clarify debugging output.
+	* sigproc.cc (sig_send): Accommodate tls -> sigtls rename.
+	(pending_signals::add): Ditto.
+	(wait_sig): Ditto.
+
 2012-12-07  Christopher Faylor  <me.cygwin2012@cgf.cx>
 
 	* cygtls.h (_cygtls::get_signal_arrived): Add parameter to make
diff --git a/winsup/cygwin/exceptions.cc b/winsup/cygwin/exceptions.cc
index c04e35af7..a28b90af5 100644
--- a/winsup/cygwin/exceptions.cc
+++ b/winsup/cygwin/exceptions.cc
@@ -1123,6 +1123,7 @@ sigpacket::process ()
 {
   bool continue_now;
   struct sigaction dummy = global_sigs[SIGSTOP];
+  _cygtls *tls;
 
   if (si.si_signo != SIGCONT)
     continue_now = false;
@@ -1168,8 +1169,11 @@ sigpacket::process ()
   if (have_execed)
     handler = NULL;
 
-  if (tls)
-    sigproc_printf ("using tls %p", tls);
+  if (sigtls)
+    {
+      tls = sigtls;
+      sigproc_printf ("using sigtls %p", tls);
+    }
   else
     {
       tls = cygheap->find_tls (si.si_signo);
diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc
index f682b849b..6c6bddb39 100644
--- a/winsup/cygwin/sigproc.cc
+++ b/winsup/cygwin/sigproc.cc
@@ -704,7 +704,7 @@ sig_send (_pinfo *p, siginfo_t& si, _cygtls *tls)
   if (!pack.si.si_uid)
     pack.si.si_uid = myself->uid;
   pack.pid = myself->pid;
-  pack.tls = tls;
+  pack.sigtls = tls;
   if (wait_for_completion)
     {
       pack.wakeup = CreateEvent (&sec_none_nih, FALSE, FALSE, NULL);
@@ -1299,7 +1299,7 @@ pending_signals::add (sigpacket& pack)
     return;
   se = sigs + pack.si.si_signo;
   *se = pack;
-  se->mask = &pack.tls->sigmask;
+  se->mask = &pack.sigtls->sigmask;
   se->next = NULL;
   if (end)
     end->next = se;
@@ -1352,7 +1352,7 @@ wait_sig (VOID *)
       if (pack.si.si_signo == __SIGHOLD)
 	WaitForSingleObject (sig_hold, INFINITE);
       DWORD nb;
-      pack.tls = NULL;
+      pack.sigtls = NULL;
       if (!ReadFile (my_readsig, &pack, sizeof (pack), &nb, NULL))
 	break;
 
@@ -1393,7 +1393,7 @@ wait_sig (VOID *)
 	  unsigned bit;
 	  sigq.reset ();
 	  while ((q = sigq.next ()))
-	    if (pack.tls->sigmask & (bit = SIGTOMASK (q->si.si_signo)))
+	    if (pack.sigtls->sigmask & (bit = SIGTOMASK (q->si.si_signo)))
 	      *pack.mask |= bit;
 	  break;
 	case __SIGHOLD:
@@ -1428,7 +1428,7 @@ wait_sig (VOID *)
 	      // FIXME: REALLY not right when taking threads into consideration.
 	      // We need a per-thread queue since each thread can have its own
 	      // list of blocked signals.  CGF 2005-08-24
-	      if (sigq.sigs[sig].si.si_signo && sigq.sigs[sig].tls == pack.tls)
+	      if (sigq.sigs[sig].si.si_signo && sigq.sigs[sig].sigtls == pack.sigtls)
 		sigproc_printf ("signal %d already queued", pack.si.si_signo);
 	      else
 		{
diff --git a/winsup/cygwin/sigproc.h b/winsup/cygwin/sigproc.h
index d442232e9..b989f3fa1 100644
--- a/winsup/cygwin/sigproc.h
+++ b/winsup/cygwin/sigproc.h
@@ -47,7 +47,7 @@ struct sigpacket
 {
   siginfo_t si;
   pid_t pid;
-  class _cygtls *tls;
+  class _cygtls *sigtls;
   sigset_t *mask;
   union
   {
@@ -56,7 +56,7 @@ struct sigpacket
     struct sigpacket *next;
   };
   int __stdcall process () __attribute__ ((regparm (1)));
-  int setup_handler (void *handler, struct sigaction& siga, _cygtls *tls)
+  int setup_handler (void *, struct sigaction&, _cygtls *)
     __attribute__ ((regparm (3)));
 };
 
@@ -80,7 +80,7 @@ void __stdcall sigproc_init ();
 void __stdcall sigproc_terminate (enum exit_states);
 #endif
 bool __stdcall pid_exists (pid_t) __attribute__ ((regparm(1)));
-int __stdcall sig_send (_pinfo *, siginfo_t&, class _cygtls *tls = NULL) __attribute__ ((regparm (3)));
+int __stdcall sig_send (_pinfo *, siginfo_t&, class _cygtls * = NULL) __attribute__ ((regparm (3)));
 int __stdcall sig_send (_pinfo *, int) __attribute__ ((regparm (2)));
 void __stdcall signal_fixup_after_exec ();
 void __stdcall sigalloc ();