* miscfuncs.cc (thread_wrapper): Remove unused _cygtls record.

* mmap.cc (is_mmapped_region): Avoid crash if no mmaps exist.

winsup/cygwin/ChangeLog

@@ -1,3 +1,8 @@
+2011-05-17  Corinna Vinschen  <corinna@vinschen.de>
+
+	* miscfuncs.cc (thread_wrapper): Remove unused _cygtls record.
+	* mmap.cc (is_mmapped_region): Avoid crash if no mmaps exist.
+
 2011-05-16  Corinna Vinschen  <corinna@vinschen.de>
 
 	* globals.cc (__getlogin_username): Remove.

winsup/cygwin/miscfuncs.cc

@@ -412,6 +412,7 @@ thread_wrapper (VOID *arg)
 	 it's actually used by the thread function.  So what we do here is
 	 to compute the stackbase of the application-provided stack, move
 	 _my_tls to the stackbase, and change the stack pointer accordingly. */
+      _my_tls.remove (0);
       wrapper_arg.stackaddr = (PVOID) ((PBYTE) wrapper_arg.stackaddr
 					       + wrapper_arg.stacksize);
       _tlsbase = (char *) wrapper_arg.stackaddr;

winsup/cygwin/mmap.cc

@@ -664,16 +664,18 @@ mmap_areas::del_list (mmap_list *ml)
 bool
 is_mmapped_region (caddr_t start_addr, caddr_t end_address)
 {
-  bool ret = false;
-
   size_t len = end_address - start_addr;
 
   LIST_LOCK ();
   mmap_list *map_list = mmapped_areas.get_list_by_fd (-1, NULL);
 
+  if (!map_list)
+    return false;
+
   mmap_record *rec;
   caddr_t u_addr;
   DWORD u_len;
+  bool ret = false;
 
   LIST_FOREACH (rec, &map_list->recs, mr_next)
     {