diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index e17bb5ba4..e3642bf36 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,16 @@
+2002-11-29  Christopher Faylor  <cgf@redhat.com>
+
+	* pinfo.h (winpids::set): Renamed from init.
+	(winpids::init): New declaration.
+	(winpids::cs): Ditto.
+	(winpids::winpids): Use set rather than init.
+	* external.cc (fillout_pinfo): Ditto.
+	* dcrt0.cc (dll_crt0_1): Call winpids::init.
+	* pinfo.cc (winpids::set): Renamed from init.  Wrap calls in critical
+	section.
+	(winpids::init): New function.
+	(winpids::cs): Define.
+
 2002-11-28  Christopher Faylor  <cgf@redhat.com>
 
 	* sigproc.cc (sig_dispatch_pending): Remove assertion.
diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc
index 6c6acbd37..d42fbfab9 100644
--- a/winsup/cygwin/dcrt0.cc
+++ b/winsup/cygwin/dcrt0.cc
@@ -569,6 +569,8 @@ dll_crt0_1 ()
   mainthread.init ("mainthread"); // For use in determining if signals
 				  //  should be blocked.
 
+  winpids::init ();
+
   int envc = 0;
   char **envp = NULL;
 
diff --git a/winsup/cygwin/external.cc b/winsup/cygwin/external.cc
index 85f4032d0..582bb2add 100644
--- a/winsup/cygwin/external.cc
+++ b/winsup/cygwin/external.cc
@@ -43,7 +43,7 @@ fillout_pinfo (pid_t pid, int winpid)
   static unsigned int i;
   if (!pids.npids || !nextpid)
     {
-      pids.init (winpid);
+      pids.set (winpid);
       i = 0;
     }
 
diff --git a/winsup/cygwin/pinfo.cc b/winsup/cygwin/pinfo.cc
index 6feea6444..75b71f22b 100644
--- a/winsup/cygwin/pinfo.cc
+++ b/winsup/cygwin/pinfo.cc
@@ -613,12 +613,22 @@ winpids::enum9x (bool winpid)
   return nelem;
 }
 
+NO_COPY CRITICAL_SECTION winpids::cs;
+
 void
-winpids::init (bool winpid)
+winpids::set (bool winpid)
 {
+  EnterCriticalSection (&cs);
   npids = (this->*enum_processes) (winpid);
   if (pidlist)
     pidlist[npids] = 0;
+  LeaveCriticalSection (&cs);
+}
+
+void
+winpids::init ()
+{
+  InitializeCriticalSection (&cs);
 }
 
 DWORD
diff --git a/winsup/cygwin/pinfo.h b/winsup/cygwin/pinfo.h
index fe36b5a27..829a2c1ba 100644
--- a/winsup/cygwin/pinfo.h
+++ b/winsup/cygwin/pinfo.h
@@ -203,17 +203,19 @@ class winpids
   DWORD enumNT (bool winpid);
   DWORD enum9x (bool winpid);
   void add (DWORD& nelem, bool, DWORD pid);
+  static CRITICAL_SECTION cs;
 public:
   DWORD npids;
   inline void reset () { npids = 0; release (); }
-  void init (bool winpid);
+  void set (bool winpid);
   winpids (int): enum_processes (&winpids::enum_init) { reset (); }
   winpids (): pidlist (NULL), npidlist (0), pinfolist (NULL),
-	      enum_processes (&winpids::enum_init), npids (0) { init (0); }
+	      enum_processes (&winpids::enum_init), npids (0) { set (0); }
   inline DWORD& winpid (int i) const {return pidlist[i];}
   inline _pinfo *operator [] (int i) const {return (_pinfo *) pinfolist[i];}
   ~winpids ();
   void release ();
+  static void init ();
 };
 
 extern __inline pid_t
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index edfa3ed2f..eff73942a 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -339,7 +339,7 @@ getsid (pid_t pid)
 extern "C" ssize_t
 read (int fd, void *ptr, size_t len)
 {
-  const struct iovec iov =
+  const iovec iov =
     {
       iov_base: ptr,
       iov_len: len