[review] Use new and delete for windows_thread_info

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index da276ab..d014dc8 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,13 @@ 
 2019-10-29  Tom Tromey  <tromey@adacore.com>
 
+	* windows-nat.c (windows_add_thread): Use new.
+	(windows_init_thread_list, windows_delete_thread): Use delete.
+	(get_windows_debug_event): Update.
+	* nat/windows-nat.h (struct windows_thread_info): Add constructor,
+	destructor, and initializers.
+
+2019-10-29  Tom Tromey  <tromey@adacore.com>
+
 	* windows-nat.c (struct windows_thread_info): Remove.
 	* nat/windows-nat.h: New file.
 
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index bf0f3e0..5819b74 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,10 @@ 
 2019-10-29  Tom Tromey  <tromey@adacore.com>
 
+	* win32-low.c (child_add_thread): Use new.
+	(delete_thread_info): Use delete.
+
+2019-10-29  Tom Tromey  <tromey@adacore.com>
+
 	* win32-low.h (struct windows_thread_info): Remove.
 
 2019-10-29  Tom Tromey  <tromey@adacore.com>
diff --git a/gdb/gdbserver/win32-low.c b/gdb/gdbserver/win32-low.c
index 6a081e2..7e3afff 100644
--- a/gdb/gdbserver/win32-low.c
+++ b/gdb/gdbserver/win32-low.c
@@ -213,10 +213,7 @@ 
   if ((th = thread_rec (ptid, FALSE)))
     return th;
 
-  th = XCNEW (windows_thread_info);
-  th->tid = tid;
-  th->h = h;
-  th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb;
+  th = new windows_thread_info (tid, h, (CORE_ADDR) (uintptr_t) tlb);
 
   add_thread (ptid, th);
 
@@ -234,7 +231,7 @@ 
 
   remove_thread (thread);
   CloseHandle (th->h);
-  free (th);
+  delete th;
 }
 
 /* Delete a thread from the list of threads.  */
diff --git a/gdb/nat/windows-nat.h b/gdb/nat/windows-nat.h
index 30fce27..2fe2a2f 100644
--- a/gdb/nat/windows-nat.h
+++ b/gdb/nat/windows-nat.h
@@ -23,6 +23,20 @@ 
    each thread.  */
 struct windows_thread_info
 {
+  windows_thread_info (DWORD tid_, HANDLE h_, CORE_ADDR tlb)
+    : tid (tid_),
+      h (h_),
+      thread_local_base (tlb)
+  {
+  }
+
+  ~windows_thread_info ()
+  {
+    xfree (name);
+  }
+
+  DISABLE_COPY_AND_ASSIGN (windows_thread_info);
+
   /* The Win32 thread identifier.  */
   DWORD tid;
 
@@ -33,26 +47,26 @@ 
   CORE_ADDR thread_local_base;
 
   /* Non zero if SuspendThread was called on this thread.  */
-  int suspended;
+  int suspended = 0;
 
 #ifdef _WIN32_WCE
   /* The context as retrieved right after suspending the thread. */
-  CONTEXT base_context;
+  CONTEXT base_context {};
 #endif
 
   /* The context of the thread, including any manipulations.  */
-  CONTEXT context;
+  CONTEXT context {};
 
   /* Whether debug registers changed since we last set CONTEXT back to
      the thread.  */
-  int debug_registers_changed;
+  int debug_registers_changed = 0;
 
   /* Nonzero if CONTEXT is invalidated and must be re-read from the
      inferior thread.  */
-  int reload_context;
+  int reload_context = 0;
 
   /* The name of the thread, allocated by xmalloc.  */
-  char *name;
+  char *name = nullptr;
 };
 
 #endif
diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index 19a2b2d..d18c37b 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -429,10 +429,7 @@ 
   if ((th = thread_rec (id, FALSE)))
     return th;
 
-  th = XCNEW (windows_thread_info);
-  th->tid = id;
-  th->h = h;
-  th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb;
+  th = new windows_thread_info (id, h, (CORE_ADDR) (uintptr_t) tlb);
   thread_list.push_back (th);
 
   /* Add this new thread to the list of threads.
@@ -472,7 +469,7 @@ 
   init_thread_list ();
 
   for (windows_thread_info *here : thread_list)
-    xfree (here);
+    delete here;
 
   thread_list.clear ();
 }
@@ -517,8 +514,7 @@ 
 
   if (iter != thread_list.end ())
     {
-      xfree ((*iter)->name);
-      xfree (*iter);
+      delete *iter;
       thread_list.erase (iter);
     }
 }
@@ -1501,7 +1497,7 @@ 
   BOOL debug_event;
   DWORD continue_status, event_code;
   windows_thread_info *th;
-  static windows_thread_info dummy_thread_info;
+  static windows_thread_info dummy_thread_info (0, 0, 0);
   DWORD thread_id = 0;
 
   last_sig = GDB_SIGNAL_0;