Fix problems with 32-bit wide-int build exposed by MinGW

 lisp.h (XPNTR): Move definition to after XTYPE, to avoid
 compilation error in an unoptimized build when !USE_LSB_TAG.
 src/w32heap.c (DUMPED_HEAP_SIZE): For 32-bit wide-int build, use the
 same larger value as for the 64-bit build.
 src/w32term.h (SCROLL_BAR_PACK): Cast the result to UINT_PTR to
 avoid compiler warnings.
 src/w32proc.c (Fw32_get_codepage_charset, Fw32_set_keyboard_layout):
 Avoid compiler warnings about cast from integer to pointer of
 different size.
 src/w32menu.c (menubar_selection_callback, w32_menu_show): Cast to
 UINT_PTR instead of EMACS_INT, to avoid compiler warnings about
 casting from integer to pointer of different size.
 (add_menu_item): Pass the help-echo string as a pointer to
 Lisp_String, not as a Lisp_Object.
 (w32_menu_display_help): Use make_lisp_ptr to reconstruct a Lisp
 string object from its C pointer.
 src/w32fns.c (w32_msg_pump) <WM_EMACS_UNREGISTER_HOT_KEY>: Use
 make_lisp_ptr instead of XIL, to reconstruct a Lisp_Cons from its
 C pointer.
 <WM_EMACS_TOGGLE_LOCK_KEY>: msg.lparam is now a C integer.
 (Fx_create_frame): Type-cast the result of XFASTINT to avoild
 compiler warnings about size differences.
 (Fw32_unregister_hot_key): Pass the tail of w32_grabbed_keys as a
 pointer to a Lisp_Cons struct, not as a disguised EMACS_INT.
 (Fw32_toggle_lock_key): Pass the new state of the key as a C
 integer; use -1 for nil.  Doc fix.
 src/.gdbinit (xgetsym): New subroutine.
 (xsymname, xsymbol): Use it.
 (xprintsym): No need to call xgetptr.

8 files changed, 107 insertions, 41 deletions

diff --git a/src/.gdbinit b/src/.gdbinit
index 1a2a973e694..91beaef8d73 100644
--- a/src/.gdbinit
+++ b/src/.gdbinit
@@ -70,14 +70,18 @@ define xgettype
   set $type = (enum Lisp_Type) (USE_LSB_TAG ? $bugfix & (1 << GCTYPEBITS) - 1 : (EMACS_UINT) $bugfix >> VALBITS)
 end
 
+define xgetsym
+  xgetptr $arg0
+  if (!USE_LSB_TAG)
+    set $ptr = ($ptr << GCTYPEBITS)
+  end
+  set $ptr = ((struct Lisp_Symbol *) ((char *)lispsym + $ptr))
+end
+
 # Access the name of a symbol
 define xsymname
-  if (CHECK_LISP_OBJECT_TYPE)
-    set $bugfix = $arg0.i
-  else
-    set $bugfix = $arg0
-  end
-  set $symname = ((struct Lisp_Symbol *) ((char *)lispsym + $bugfix))->name
+  xgetsym $arg0
+  set $symname = $ptr->name
 end
 
 # Set up something to print out s-expressions.
@@ -760,7 +764,7 @@ end
 
 define xsymbol
   set $sym = $
-  xgetptr $sym
+  xgetsym $sym
   print (struct Lisp_Symbol *) $ptr
   xprintsym $sym
   echo \n
@@ -1082,8 +1086,7 @@ define xprintstr
 end
 
 define xprintsym
-  xgetptr $arg0
-  xsymname $ptr
+  xsymname $arg0
   xgetptr $symname
   set $sym_name = (struct Lisp_String *) $ptr
   xprintstr $sym_name
diff --git a/src/ChangeLog b/src/ChangeLog
index 81d6772bc23..2f40a463ed4 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,42 @@
+2015-01-13  Eli Zaretskii  <eliz@gnu.org>
+
+	Fix problems with 32-bit wide-int build exposed by MinGW.
+	* lisp.h (XPNTR): Move definition to after XTYPE, to avoid
+	compilation error in an unoptimized build when !USE_LSB_TAG.
+
+	* w32heap.c (DUMPED_HEAP_SIZE): For 32-bit wide-int build, use the
+	same larger value as for the 64-bit build.
+
+	* w32term.h (SCROLL_BAR_PACK): Cast the result to UINT_PTR to
+	avoid compiler warnings.
+
+	* w32proc.c (Fw32_get_codepage_charset, Fw32_set_keyboard_layout):
+	Avoid compiler warnings about cast from integer to pointer of
+	different size.
+
+	* w32menu.c (menubar_selection_callback, w32_menu_show): Cast to
+	UINT_PTR instead of EMACS_INT, to avoid compiler warnings about
+	casting from integer to pointer of different size.
+	(add_menu_item): Pass the help-echo string as a pointer to
+	Lisp_String, not as a Lisp_Object.
+	(w32_menu_display_help): Use make_lisp_ptr to reconstruct a Lisp
+	string object from its C pointer.
+
+	* w32fns.c (w32_msg_pump) <WM_EMACS_UNREGISTER_HOT_KEY>: Use
+	make_lisp_ptr instead of XIL, to reconstruct a Lisp_Cons from its
+	C pointer.
+	<WM_EMACS_TOGGLE_LOCK_KEY>: msg.lparam is now a C integer.
+	(Fx_create_frame): Type-cast the result of XFASTINT to avoild
+	compiler warnings about size differences.
+	(Fw32_unregister_hot_key): Pass the tail of w32_grabbed_keys as a
+	pointer to a Lisp_Cons struct, not as a disguised EMACS_INT.
+	(Fw32_toggle_lock_key): Pass the new state of the key as a C
+	integer; use -1 for nil.  Doc fix.
+
+	* .gdbinit (xgetsym): New subroutine.
+	(xsymname, xsymbol): Use it.
+	(xprintsym): No need to call xgetptr.
+
 2015-01-13  Martin Rudalics  <rudalics@gmx.at>
 
 	* frame.c (adjust_frame_size): Make sure new numbers of
diff --git a/src/lisp.h b/src/lisp.h
index a11e61213dc..ba1aff8e796 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -820,9 +820,6 @@ DEFINE_GDB_SYMBOL_END (VALMASK)
 #define MOST_POSITIVE_FIXNUM (EMACS_INT_MAX >> INTTYPEBITS)
 #define MOST_NEGATIVE_FIXNUM (-1 - MOST_POSITIVE_FIXNUM)
 
-/* Extract the pointer hidden within A.  */
-LISP_MACRO_DEFUN (XPNTR, void *, (Lisp_Object a), (a))
-
 #if USE_LSB_TAG
 
 LISP_MACRO_DEFUN (make_number, Lisp_Object, (EMACS_INT n), (n))
@@ -912,6 +909,9 @@ XUNTAG (Lisp_Object a, int type)
 
 #endif /* ! USE_LSB_TAG */
 
+/* Extract the pointer hidden within A.  */
+LISP_MACRO_DEFUN (XPNTR, void *, (Lisp_Object a), (a))
+
 /* Extract A's value as an unsigned integer.  */
 INLINE EMACS_UINT
 XUINT (Lisp_Object a)
diff --git a/src/w32fns.c b/src/w32fns.c
index 3b8346a07fd..2dd92ff8a3a 100644
--- a/src/w32fns.c
+++ b/src/w32fns.c
@@ -2543,7 +2543,7 @@ w32_msg_pump (deferred_msg * msg_buf)
                  thread-safe.  The next line is okay because the cons
                  cell is never made into garbage and is not relocated by
                  GC.  */
-	      XSETCAR (XIL ((EMACS_INT) msg.lParam), Qnil);
+	      XSETCAR (make_lisp_ptr ((void *)msg.lParam, Lisp_Cons), Qnil);
 	      if (!PostThreadMessage (dwMainThreadId, WM_EMACS_DONE, 0, 0))
 		emacs_abort ();
 	      break;
@@ -2551,16 +2551,10 @@ w32_msg_pump (deferred_msg * msg_buf)
 	      {
 		int vk_code = (int) msg.wParam;
 		int cur_state = (GetKeyState (vk_code) & 1);
-		Lisp_Object new_state = XIL ((EMACS_INT) msg.lParam);
-
-		/* NB: This code must be thread-safe.  It is safe to
-                   call NILP because symbols are not relocated by GC,
-                   and pointer here is not touched by GC (so the markbit
-                   can't be set).  Numbers are safe because they are
-                   immediate values.  */
-		if (NILP (new_state)
-		    || (NUMBERP (new_state)
-			&& ((XUINT (new_state)) & 1) != cur_state))
+		int new_state = msg.lParam;
+
+		if (new_state == -1
+		    || ((new_state & 1) != cur_state))
 		  {
 		    one_w32_display_info.faked_key = vk_code;
 
@@ -4523,7 +4517,9 @@ This function is an internal primitive--use `make-frame' instead.  */)
   /* Specify the parent under which to make this window.  */
   if (!NILP (parent))
     {
-      f->output_data.w32->parent_desc = (Window) XFASTINT (parent);
+      /* Cast to UINT_PTR shuts up compiler warnings about cast to
+	 pointer from integer of different size.  */
+      f->output_data.w32->parent_desc = (Window) (UINT_PTR) XFASTINT (parent);
       f->output_data.w32->explicit_parent = 1;
     }
   else
@@ -7260,10 +7256,17 @@ DEFUN ("w32-unregister-hot-key", Fw32_unregister_hot_key,
 
   if (!NILP (item))
     {
+      LPARAM lparam;
+
+      eassert (CONSP (item));
+      /* Pass the tail of the list as a pointer to a Lisp_Cons cell,
+	 so that it works in a --with-wide-int build as well.  */
+      lparam = (LPARAM) XUNTAG (item, Lisp_Cons);
+
       /* Notify input thread about hot-key definition being removed, so
 	 that it takes effect without needing focus switch.  */
       if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_UNREGISTER_HOT_KEY,
-			     (WPARAM) XINT (XCAR (item)), (LPARAM) XLI (item)))
+			     (WPARAM) XINT (XCAR (item)), lparam))
 	{
 	  MSG msg;
 	  GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE);
@@ -7318,10 +7321,15 @@ DEFUN ("w32-toggle-lock-key", Fw32_toggle_lock_key,
        doc: /* Toggle the state of the lock key KEY.
 KEY can be `capslock', `kp-numlock', or `scroll'.
 If the optional parameter NEW-STATE is a number, then the state of KEY
-is set to off if the low bit of NEW-STATE is zero, otherwise on.  */)
+is set to off if the low bit of NEW-STATE is zero, otherwise on.
+If NEW-STATE is omitted or nil, the function toggles the state,
+
+Value is the new state of the key, or nil if the function failed
+to change the state.  */)
   (Lisp_Object key, Lisp_Object new_state)
 {
   int vk_code;
+  LPARAM lparam;
 
   if (EQ (key, intern ("capslock")))
     vk_code = VK_CAPITAL;
@@ -7335,8 +7343,12 @@ is set to off if the low bit of NEW-STATE is zero, otherwise on.  */)
   if (!dwWindowsThreadId)
     return make_number (w32_console_toggle_lock_key (vk_code, new_state));
 
+  if (NILP (new_state))
+    lparam = -1;
+  else
+    lparam = (XUINT (new_state)) & 1;
   if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_TOGGLE_LOCK_KEY,
-			 (WPARAM) vk_code, (LPARAM) XLI (new_state)))
+			 (WPARAM) vk_code, lparam))
     {
       MSG msg;
       GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE);
diff --git a/src/w32heap.c b/src/w32heap.c
index f68332319c1..d5a9dae0aa4 100644
--- a/src/w32heap.c
+++ b/src/w32heap.c
@@ -114,7 +114,7 @@ typedef struct _RTL_HEAP_PARAMETERS {
    than half of the size stated below.  It would be nice to find a way
    to build only the first bootstrap-emacs.exe with the large size,
    and reset that to a lower value afterwards.  */
-#ifdef _WIN64
+#if defined _WIN64 || defined WIDE_EMACS_INT
 # define DUMPED_HEAP_SIZE (18*1024*1024)
 #else
 # define DUMPED_HEAP_SIZE (11*1024*1024)
diff --git a/src/w32menu.c b/src/w32menu.c
index a65e399ba5b..2742276d3f6 100644
--- a/src/w32menu.c
+++ b/src/w32menu.c
@@ -217,9 +217,9 @@ menubar_selection_callback (struct frame *f, void * client_data)
       else
 	{
 	  entry = AREF (vector, i + MENU_ITEMS_ITEM_VALUE);
-	  /* The EMACS_INT cast avoids a warning.  There's no problem
+	  /* The UINT_PTR cast avoids a warning.  There's no problem
 	     as long as pointers have enough bits to hold small integers.  */
-	  if ((int) (EMACS_INT) client_data == i)
+	  if ((int) (UINT_PTR) client_data == i)
 	    {
 	      int j;
 	      struct input_event buf;
@@ -706,7 +706,7 @@ w32_menu_show (struct frame *f, int x, int y, int menuflags,
 	    wv->key = SSDATA (descrip);
 	  /* Use the contents index as call_data, since we are
              restricted to 16-bits.  */
-	  wv->call_data = !NILP (def) ? (void *) (EMACS_INT) i : 0;
+	  wv->call_data = !NILP (def) ? (void *) (UINT_PTR) i : 0;
 
 	  if (NILP (type))
 	    wv->button_type = BUTTON_TYPE_NONE;
@@ -1401,17 +1401,21 @@ add_menu_item (HMENU menu, widget_value *wv, HMENU item)
 	  info.cbSize = sizeof (info);
 	  info.fMask = MIIM_DATA;
 
-	  /* Set help string for menu item.  Leave it as a Lisp_Object
-	     until it is ready to be displayed, since GC can happen while
-	     menus are active.  */
+	  /* Set help string for menu item.  Leave it as a pointer to
+	     a Lisp_String until it is ready to be displayed, since GC
+	     can happen while menus are active.  */
 	  if (!NILP (wv->help))
 	    {
+	      /* We use XUNTAG below because in a 32-bit build
+		 --with-wide-int we cannot pass a Lisp_Object
+		 via a DWORD member of MENUITEMINFO.  */
 	      /* As of Jul-2012, w32api headers say that dwItemData
 		 has DWORD type, but that's a bug: it should actually
 		 be ULONG_PTR, which is correct for 32-bit and 64-bit
 		 Windows alike.  MSVC headers get it right; hopefully,
 		 MinGW headers will, too.  */
-	      info.dwItemData = (ULONG_PTR) XLI (wv->help);
+	      eassert (STRINGP (wv->help));
+	      info.dwItemData = (ULONG_PTR) XUNTAG (wv->help, Lisp_String);
 	    }
 	  if (wv->button_type == BUTTON_TYPE_RADIO)
 	    {
@@ -1487,7 +1491,10 @@ w32_menu_display_help (HWND owner, HMENU menu, UINT item, UINT flags)
 	  info.fMask = MIIM_DATA;
 	  get_menu_item_info (menu, item, FALSE, &info);
 
-	  help = info.dwItemData ? XIL (info.dwItemData) : Qnil;
+	  help =
+	    info.dwItemData
+	    ? make_lisp_ptr ((void *) info.dwItemData, Lisp_String)
+	    : Qnil;
 	}
 
       /* Store the help echo in the keyboard buffer as the X toolkit
diff --git a/src/w32proc.c b/src/w32proc.c
index 26cfa2996d0..74731db2426 100644
--- a/src/w32proc.c
+++ b/src/w32proc.c
@@ -3077,13 +3077,18 @@ yield nil.  */)
   (Lisp_Object cp)
 {
   CHARSETINFO info;
+  DWORD dwcp;
 
   CHECK_NUMBER (cp);
 
   if (!IsValidCodePage (XINT (cp)))
     return Qnil;
 
-  if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE))
+  /* Going through a temporary DWORD variable avoids compiler warning
+     about cast to pointer from integer of different size, when
+     building --with-wide-int.  */
+  dwcp = XINT (cp);
+  if (TranslateCharsetInfo ((DWORD *) dwcp, &info, TCI_SRCCODEPAGE))
     return make_number (info.ciCharset);
 
   return Qnil;
@@ -3142,8 +3147,8 @@ If successful, the new layout id is returned, otherwise nil.  */)
   CHECK_NUMBER_CAR (layout);
   CHECK_NUMBER_CDR (layout);
 
- kl = (HKL) ((XINT (XCAR (layout)) & 0xffff)
-	     | (XINT (XCDR (layout)) << 16));
+  kl = (HKL) (UINT_PTR) ((XINT (XCAR (layout)) & 0xffff)
+			 | (XINT (XCDR (layout)) << 16));
 
   /* Synchronize layout with input thread.  */
   if (dwWindowsThreadId)
diff --git a/src/w32term.h b/src/w32term.h
index 042d7abd945..c905ef15737 100644
--- a/src/w32term.h
+++ b/src/w32term.h
@@ -493,8 +493,8 @@ struct scroll_bar {
   (XSETINT ((low),   ((DWORDLONG)(int64))        & 0xffffffff), \
    XSETINT ((high), ((DWORDLONG)(int64) >> 32) & 0xffffffff))
 #else  /* not _WIN64 */
-/* Building a 32-bit C integer from two 16-bit lisp integers.  */
-#define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
+/* Building a 32-bit C unsigned integer from two 16-bit lisp integers.  */
+#define SCROLL_BAR_PACK(low, high) ((UINT_PTR)(XINT (high) << 16 | XINT (low)))
 
 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 #define SCROLL_BAR_UNPACK(low, high, int32) \