merge 8.6

10 files changed, 162 insertions, 168 deletions

diff --git a/unix/configure b/unix/configure
index 8d185ec..687350d 100755
--- a/unix/configure
+++ b/unix/configure
@@ -8805,7 +8805,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-struct passwd pwd; pwd.pw_gecos;
+struct passwd pwd; (void)pwd.pw_gecos;
   ;
   return 0;
 }
diff --git a/unix/configure.in b/unix/configure.in
index 728483b..b754a35 100644
--- a/unix/configure.in
+++ b/unix/configure.in
@@ -244,7 +244,7 @@ AC_CHECK_TYPE([uintptr_t], [
 
 AC_CACHE_CHECK([pw_gecos in struct pwd], tcl_cv_pwd_pw_gecos, [
     AC_TRY_COMPILE([#include <pwd.h>],
-	    [struct passwd pwd; pwd.pw_gecos;],
+	    [struct passwd pwd; (void)pwd.pw_gecos;],
 	    tcl_cv_pwd_pw_gecos=yes, tcl_cv_pwd_pw_gecos=no)])
 if test $tcl_cv_pwd_pw_gecos = yes; then
     AC_DEFINE(HAVE_PW_GECOS, 1, [Does struct password have a pw_gecos field?])
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 25a01ac..51ac8d9 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -2339,7 +2339,7 @@ AC_DEFUN([SC_TIME_HANDLER], [
     fi
 
     AC_CACHE_CHECK([tm_gmtoff in struct tm], tcl_cv_member_tm_gmtoff, [
-	AC_TRY_COMPILE([#include <time.h>], [struct tm tm; tm.tm_gmtoff;],
+	AC_TRY_COMPILE([#include <time.h>], [struct tm tm; (void)tm.tm_gmtoff;],
 	    tcl_cv_member_tm_gmtoff=yes, tcl_cv_member_tm_gmtoff=no)])
     if test $tcl_cv_member_tm_gmtoff = yes ; then
 	AC_DEFINE(HAVE_TM_GMTOFF, 1, [Should we use the tm_gmtoff field of struct tm?])
diff --git a/unix/tkUnixCursor.c b/unix/tkUnixCursor.c
index 8afb92d..4c58adf 100644
--- a/unix/tkUnixCursor.c
+++ b/unix/tkUnixCursor.c
@@ -245,7 +245,7 @@ TkGetCursorByName(
     if ((argv[0][0] != '@') && !inTkTable) {
 	XColor fg, bg;
 	unsigned int maskIndex;
-	register const struct CursorName *namePtr;
+	const struct CursorName *namePtr;
 	TkDisplay *dispPtr;
 
 	/*
diff --git a/unix/tkUnixFont.c b/unix/tkUnixFont.c
index d524bfd..234b282 100644
--- a/unix/tkUnixFont.c
+++ b/unix/tkUnixFont.c
@@ -2636,7 +2636,7 @@ CanUseFallback(
 	memcpy(newPtr, fontPtr->subFontArray,
 		fontPtr->numSubFonts * sizeof(SubFont));
 	if (fixSubFontPtrPtr != NULL) {
-	    register SubFont *fixSubFontPtr = *fixSubFontPtrPtr;
+	    SubFont *fixSubFontPtr = *fixSubFontPtrPtr;
 
 	    if (fixSubFontPtr != &fontPtr->controlSubFont) {
 		*fixSubFontPtrPtr =
diff --git a/unix/tkUnixMenubu.c b/unix/tkUnixMenubu.c
index 6677e83..b212aea 100644
--- a/unix/tkUnixMenubu.c
+++ b/unix/tkUnixMenubu.c
@@ -58,14 +58,14 @@ void
 TkpDisplayMenuButton(
     ClientData clientData)	/* Information about widget. */
 {
-    register TkMenuButton *mbPtr = (TkMenuButton *) clientData;
+    TkMenuButton *mbPtr = (TkMenuButton *)clientData;
     GC gc;
     Tk_3DBorder border;
     Pixmap pixmap;
     int x = 0;			/* Initialization needed only to stop compiler
 				 * warning. */
     int y = 0;
-    register Tk_Window tkwin = mbPtr->tkwin;
+    Tk_Window tkwin = mbPtr->tkwin;
     int fullWidth, fullHeight;
     int textXOffset, textYOffset;
     int imageWidth, imageHeight;
diff --git a/unix/tkUnixScale.c b/unix/tkUnixScale.c
index 9c6e4f3..a603432 100644
--- a/unix/tkUnixScale.c
+++ b/unix/tkUnixScale.c
@@ -50,9 +50,9 @@ static void		DisplayVerticalValue(TkScale *scalePtr,
 
 TkScale *
 TkpCreateScale(
-    Tk_Window tkwin)
+    TCL_UNUSED(Tk_Window))
 {
-    return ckalloc(sizeof(TkScale));
+    return (TkScale *)ckalloc(sizeof(TkScale));
 }
 
 /*
@@ -256,7 +256,7 @@ DisplayVerticalScale(
 
 static void
 DisplayVerticalValue(
-    register TkScale *scalePtr,	/* Information about widget in which to
+    TkScale *scalePtr,	/* Information about widget in which to
 				 * display value. */
     Drawable drawable,		/* Pixmap or window in which to draw the
 				 * value. */
@@ -267,7 +267,7 @@ DisplayVerticalValue(
 				 * specified in pixels. */
     const char *format)		/* Format string to use for the value */
 {
-    register Tk_Window tkwin = scalePtr->tkwin;
+    Tk_Window tkwin = scalePtr->tkwin;
     int y, width, length;
     char valueString[TCL_DOUBLE_SPACE];
     Tk_FontMetrics fm;
@@ -325,7 +325,7 @@ DisplayHorizontalScale(
 				 * to reflect the part of the window that was
 				 * redrawn. */
 {
-    register Tk_Window tkwin = scalePtr->tkwin;
+    Tk_Window tkwin = scalePtr->tkwin;
     int x, y, width, height, shadowWidth;
     double tickInterval = scalePtr->tickInterval;
     Tk_3DBorder sliderBorder;
@@ -479,7 +479,7 @@ DisplayHorizontalScale(
 
 static void
 DisplayHorizontalValue(
-    register TkScale *scalePtr,	/* Information about widget in which to
+    TkScale *scalePtr,	/* Information about widget in which to
 				 * display value. */
     Drawable drawable,		/* Pixmap or window in which to draw the
 				 * value. */
@@ -490,7 +490,7 @@ DisplayHorizontalValue(
 				 * in pixels. */
     const char *format)		/* Format string to use for the value */
 {
-    register Tk_Window tkwin = scalePtr->tkwin;
+    Tk_Window tkwin = scalePtr->tkwin;
     int x, y, length, width;
     char valueString[TCL_DOUBLE_SPACE];
     Tk_FontMetrics fm;
@@ -546,7 +546,7 @@ void
 TkpDisplayScale(
     ClientData clientData)	/* Widget record for scale. */
 {
-    TkScale *scalePtr = (TkScale *) clientData;
+    TkScale *scalePtr = (TkScale *)clientData;
     Tk_Window tkwin = scalePtr->tkwin;
     Tcl_Interp *interp = scalePtr->interp;
     Pixmap pixmap;
diff --git a/unix/tkUnixScrlbr.c b/unix/tkUnixScrlbr.c
index 9b75431..69843db 100644
--- a/unix/tkUnixScrlbr.c
+++ b/unix/tkUnixScrlbr.c
@@ -63,7 +63,7 @@ TkScrollbar *
 TkpCreateScrollbar(
     Tk_Window tkwin)
 {
-    UnixScrollbar *scrollPtr = ckalloc(sizeof(UnixScrollbar));
+    UnixScrollbar *scrollPtr = (UnixScrollbar *)ckalloc(sizeof(UnixScrollbar));
 
     scrollPtr->troughGC = NULL;
     scrollPtr->copyGC = NULL;
@@ -97,8 +97,8 @@ void
 TkpDisplayScrollbar(
     ClientData clientData)	/* Information about window. */
 {
-    register TkScrollbar *scrollPtr = (TkScrollbar *) clientData;
-    register Tk_Window tkwin = scrollPtr->tkwin;
+    TkScrollbar *scrollPtr = (TkScrollbar *)clientData;
+    Tk_Window tkwin = scrollPtr->tkwin;
     XPoint points[7];
     Tk_3DBorder border;
     int relief, width, elementBorderWidth;
@@ -277,7 +277,7 @@ TkpDisplayScrollbar(
 
 extern void
 TkpComputeScrollbarGeometry(
-    register TkScrollbar *scrollPtr)
+    TkScrollbar *scrollPtr)
 				/* Scrollbar whose geometry may have
 				 * changed. */
 {
@@ -394,22 +394,22 @@ TkpDestroyScrollbar(
 
 void
 TkpConfigureScrollbar(
-    register TkScrollbar *scrollPtr)
+    TkScrollbar *scrollPtr)
 				/* Information about widget; may or may not
 				 * already have values for some fields. */
 {
     XGCValues gcValues;
-    GC new;
+    GC newGC;
     UnixScrollbar *unixScrollPtr = (UnixScrollbar *) scrollPtr;
 
     Tk_SetBackgroundFromBorder(scrollPtr->tkwin, scrollPtr->bgBorder);
 
     gcValues.foreground = scrollPtr->troughColorPtr->pixel;
-    new = Tk_GetGC(scrollPtr->tkwin, GCForeground, &gcValues);
+    newGC = Tk_GetGC(scrollPtr->tkwin, GCForeground, &gcValues);
     if (unixScrollPtr->troughGC != NULL) {
 	Tk_FreeGC(scrollPtr->display, unixScrollPtr->troughGC);
     }
-    unixScrollPtr->troughGC = new;
+    unixScrollPtr->troughGC = newGC;
     if (unixScrollPtr->copyGC == NULL) {
 	gcValues.graphics_exposures = False;
 	unixScrollPtr->copyGC = Tk_GetGC(scrollPtr->tkwin,
@@ -437,12 +437,12 @@ TkpConfigureScrollbar(
 
 int
 TkpScrollbarPosition(
-    register TkScrollbar *scrollPtr,
+    TkScrollbar *scrollPtr,
 				/* Scrollbar widget record. */
     int x, int y)		/* Coordinates within scrollPtr's window. */
 {
     int length, width, tmp;
-    register const int inset = scrollPtr->inset;
+    const int inset = scrollPtr->inset;
 
     if (scrollPtr->vertical) {
 	length = Tk_Height(scrollPtr->tkwin);
diff --git a/unix/tkUnixSend.c b/unix/tkUnixSend.c
index 1ee4bba..03d124f 100644
--- a/unix/tkUnixSend.c
+++ b/unix/tkUnixSend.c
@@ -269,7 +269,7 @@ RegOpen(
 
     handler = Tk_CreateErrorHandler(dispPtr->display, -1, -1, -1, NULL, NULL);
 
-    regPtr = ckalloc(sizeof(NameRegistry));
+    regPtr = (NameRegistry *)ckalloc(sizeof(NameRegistry));
     regPtr->dispPtr = dispPtr;
     regPtr->locked = 0;
     regPtr->modified = 0;
@@ -479,7 +479,7 @@ RegAddName(
     sprintf(id, "%x ", (unsigned) commWindow);
     idLength = strlen(id);
     newBytes = idLength + strlen(name) + 1;
-    newProp = ckalloc(regPtr->propLength + newBytes);
+    newProp = (char *)ckalloc(regPtr->propLength + newBytes);
     strcpy(newProp, id);
     strcpy(newProp+idLength, name);
     if (regPtr->property != NULL) {
@@ -808,7 +808,7 @@ Tk_SetAppName(
     const char *actualName;
     Tcl_DString dString;
     int offset, i;
-    ThreadSpecificData *tsdPtr =
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
 	    Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
 
     interp = winPtr->mainPtr->interp;
@@ -830,7 +830,7 @@ Tk_SetAppName(
 	     * the "send" command to the interpreter.
 	     */
 
-	    riPtr = ckalloc(sizeof(RegisteredInterp));
+	    riPtr = (RegisteredInterp *)ckalloc(sizeof(RegisteredInterp));
 	    riPtr->interp = interp;
 	    riPtr->dispPtr = winPtr->dispPtr;
 	    riPtr->nextPtr = tsdPtr->interpListPtr;
@@ -914,7 +914,7 @@ Tk_SetAppName(
 
     RegAddName(regPtr, actualName, Tk_WindowId(dispPtr->commTkwin));
     RegClose(regPtr);
-    riPtr->name = ckalloc(strlen(actualName) + 1);
+    riPtr->name = (char *)ckalloc(strlen(actualName) + 1);
     strcpy(riPtr->name, actualName);
     if (actualName != name) {
 	Tcl_DStringFree(&dString);
@@ -943,7 +943,7 @@ Tk_SetAppName(
 
 int
 Tk_SendObjCmd(
-    ClientData clientData,	/* Information about sender (only dispPtr
+    TCL_UNUSED(void *),	/* Information about sender (only dispPtr
 				 * field is used). */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
@@ -958,7 +958,7 @@ Tk_SendObjCmd(
     TkWindow *winPtr;
     Window commWindow;
     PendingCommand pending;
-    register RegisteredInterp *riPtr;
+    RegisteredInterp *riPtr;
     const char *destName;
     int result, index, async, i, firstArg;
     Tk_RestrictProc *prevProc;
@@ -967,7 +967,7 @@ Tk_SendObjCmd(
     Tcl_Time timeout;
     NameRegistry *regPtr;
     Tcl_DString request;
-    ThreadSpecificData *tsdPtr =
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
 	    Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
     Tcl_Interp *localInterp;	/* Used when the interpreter to send the
 				 * command to is within the same process. */
@@ -1175,7 +1175,7 @@ Tk_SendObjCmd(
 		    msg = "target application died";
 		}
 		pending.code = TCL_ERROR;
-		pending.result = ckalloc(strlen(msg) + 1);
+		pending.result = (char *)ckalloc(strlen(msg) + 1);
 		strcpy(pending.result, msg);
 		pending.gotResponse = 1;
 	    } else {
@@ -1356,7 +1356,7 @@ TkSendCleanup(
 
 static int
 SendInit(
-    Tcl_Interp *interp,		/* Interpreter to use for error reporting (no
+    TCL_UNUSED(Tcl_Interp *),	/* Interpreter to use for error reporting (no
 				 * errors are ever returned, but the
 				 * interpreter is needed anyway). */
     TkDisplay *dispPtr)		/* Display to initialize. */
@@ -1419,14 +1419,14 @@ SendEventProc(
     ClientData clientData,	/* Display information. */
     XEvent *eventPtr)		/* Information about event. */
 {
-    TkDisplay *dispPtr = clientData;
+    TkDisplay *dispPtr = (TkDisplay *)clientData;
     char *propInfo, **propInfoPtr = &propInfo;
     const char *p;
     int result, actualFormat;
     unsigned long numItems, bytesAfter;
     Atom actualType;
     Tcl_Interp *remoteInterp;	/* Interp in which to execute the command. */
-    ThreadSpecificData *tsdPtr =
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
 	    Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
 
     if ((eventPtr->xproperty.atom != dispPtr->commProperty)
@@ -1698,16 +1698,16 @@ SendEventProc(
 		}
 		pcPtr->code = code;
 		if (resultString != NULL) {
-		    pcPtr->result = ckalloc(strlen(resultString) + 1);
+		    pcPtr->result = (char *)ckalloc(strlen(resultString) + 1);
 		    strcpy(pcPtr->result, resultString);
 		}
 		if (code == TCL_ERROR) {
 		    if (errorInfo != NULL) {
-			pcPtr->errorInfo = ckalloc(strlen(errorInfo) + 1);
+			pcPtr->errorInfo = (char *)ckalloc(strlen(errorInfo) + 1);
 			strcpy(pcPtr->errorInfo, errorInfo);
 		    }
 		    if (errorCode != NULL) {
-			pcPtr->errorCode = ckalloc(strlen(errorCode) + 1);
+			pcPtr->errorCode = (char *)ckalloc(strlen(errorCode) + 1);
 			strcpy(pcPtr->errorCode, errorCode);
 		    }
 		}
@@ -1774,15 +1774,14 @@ AppendPropCarefully(
  * operation above.
  */
 
-	/* ARGSUSED */
 static int
 AppendErrorProc(
     ClientData clientData,	/* Command to mark complete, or NULL. */
-    XErrorEvent *errorPtr)	/* Information about error. */
+    TCL_UNUSED(XErrorEvent *))	/* Information about error. */
 {
-    PendingCommand *pendingPtr = clientData;
-    register PendingCommand *pcPtr;
-    ThreadSpecificData *tsdPtr =
+    PendingCommand *pendingPtr = (PendingCommand *)clientData;
+    PendingCommand *pcPtr;
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
 	    Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
 
     if (pendingPtr == NULL) {
@@ -1796,7 +1795,7 @@ AppendErrorProc(
     for (pcPtr = tsdPtr->pendingCommands; pcPtr != NULL;
 	    pcPtr = pcPtr->nextPtr) {
 	if ((pcPtr == pendingPtr) && (pcPtr->result == NULL)) {
-	    pcPtr->result = ckalloc(strlen(pcPtr->target) + 50);
+	    pcPtr->result = (char *)ckalloc(strlen(pcPtr->target) + 50);
 	    sprintf(pcPtr->result, "no application named \"%s\"",
 		    pcPtr->target);
 	    pcPtr->code = TCL_ERROR;
@@ -1829,10 +1828,10 @@ DeleteProc(
     ClientData clientData)	/* Info about registration, passed as
 				 * ClientData. */
 {
-    RegisteredInterp *riPtr = clientData;
-    register RegisteredInterp *riPtr2;
+    RegisteredInterp *riPtr = (RegisteredInterp *)clientData;
+    RegisteredInterp *riPtr2;
     NameRegistry *regPtr;
-    ThreadSpecificData *tsdPtr =
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
 	    Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
 
     regPtr = RegOpen(riPtr->interp, riPtr->dispPtr, 1);
@@ -1874,11 +1873,10 @@ DeleteProc(
  *----------------------------------------------------------------------
  */
 
-    /* ARGSUSED */
 static Tk_RestrictAction
 SendRestrictProc(
-    ClientData clientData,		/* Not used. */
-    register XEvent *eventPtr)		/* Event that just arrived. */
+    TCL_UNUSED(void *),		/* Not used. */
+    XEvent *eventPtr)		/* Event that just arrived. */
 {
     TkDisplay *dispPtr;
 
@@ -1921,7 +1919,7 @@ UpdateCommWindow(
 {
     Tcl_DString names;
     RegisteredInterp *riPtr;
-    ThreadSpecificData *tsdPtr =
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
 	    Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
 
     Tcl_DStringInit(&names);
@@ -1954,7 +1952,6 @@ UpdateCommWindow(
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
 TkpTestsendCmd(
     ClientData clientData,	/* Main window for application. */
@@ -1968,7 +1965,7 @@ TkpTestsendCmd(
     static const char *const testsendOptions[] = {
 	"bogus",   "prop",   "serial",  NULL
     };
-    TkWindow *winPtr = clientData;
+    TkWindow *winPtr = (TkWindow *)clientData;
     Tk_ErrorHandler handler;
     int index;
 
diff --git a/unix/tkUnixWm.c b/unix/tkUnixWm.c
index f1d1fe0..83b36e3 100644
--- a/unix/tkUnixWm.c
+++ b/unix/tkUnixWm.c
@@ -36,7 +36,7 @@ typedef struct ProtocolHandler {
 } ProtocolHandler;
 
 #define HANDLER_SIZE(cmdLength) \
-    ((unsigned) ((Tk_Offset(ProtocolHandler, command) + 1) + cmdLength))
+    ((unsigned)((Tk_Offset(ProtocolHandler, command) + 1) + cmdLength))
 
 /*
  * Data for [wm attributes] command:
@@ -564,10 +564,10 @@ void
 TkWmNewWindow(
     TkWindow *winPtr)		/* Newly-created top-level window. */
 {
-    register WmInfo *wmPtr;
+    WmInfo *wmPtr;
     TkDisplay *dispPtr = winPtr->dispPtr;
 
-    wmPtr = ckalloc(sizeof(WmInfo));
+    wmPtr = (WmInfo *)ckalloc(sizeof(WmInfo));
     memset(wmPtr, 0, sizeof(WmInfo));
     wmPtr->winPtr = winPtr;
     wmPtr->reparent = None;
@@ -659,7 +659,7 @@ TkWmMapWindow(
     TkWindow *winPtr)		/* Top-level window that's about to be
 				 * mapped. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     XTextProperty textProp;
 
     if (wmPtr->flags & WM_NEVER_MAPPED) {
@@ -827,7 +827,7 @@ void
 TkWmDeadWindow(
     TkWindow *winPtr)		/* Top-level window that's being deleted. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     WmInfo *wmPtr2;
 
     if (wmPtr == NULL) {
@@ -836,7 +836,7 @@ TkWmDeadWindow(
     if ((WmInfo *) winPtr->dispPtr->firstWmPtr == wmPtr) {
 	winPtr->dispPtr->firstWmPtr = wmPtr->nextPtr;
     } else {
-	register WmInfo *prevPtr;
+	WmInfo *prevPtr;
 
 	for (prevPtr = (WmInfo *) winPtr->dispPtr->firstWmPtr; ;
 		prevPtr = prevPtr->nextPtr) {
@@ -1005,7 +1005,6 @@ TkWmSetClass(
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
 Tk_WmObjCmd(
     ClientData clientData,	/* Main window associated with interpreter. */
@@ -1013,7 +1012,7 @@ Tk_WmObjCmd(
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tk_Window tkwin = clientData;
+    Tk_Window tkwin = (Tk_Window)clientData;
     static const char *const optionStrings[] = {
 	"aspect", "attributes", "client", "colormapwindows",
 	"command", "deiconify", "focusmodel", "forget",
@@ -1182,13 +1181,13 @@ Tk_WmObjCmd(
 
 static int
 WmAspectCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     int numer1, denom1, numer2, denom2;
 
     if ((objc != 3) && (objc != 7)) {
@@ -1315,7 +1314,7 @@ WmSetAttribute(
 	SetNetWmState(winPtr, "_NET_WM_STATE_FULLSCREEN",
 		wmPtr->reqState.fullscreen);
 	break;
-    case _WMATT_LAST_ATTRIBUTE:	/* NOTREACHED */
+    case _WMATT_LAST_ATTRIBUTE:
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -1352,10 +1351,9 @@ WmGetAttribute(
 	return Tcl_NewBooleanObj(wmPtr->attributes.fullscreen);
     case WMATT_TYPE:
 	return GetNetWmType(winPtr);
-    case _WMATT_LAST_ATTRIBUTE:	/*NOTREACHED*/
+    case _WMATT_LAST_ATTRIBUTE:
 	break;
     }
-    /*NOTREACHED*/
     return NULL;
 }
 
@@ -1385,7 +1383,7 @@ WmGetAttribute(
 
 static int
 WmAttributesCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
@@ -1449,13 +1447,13 @@ WmAttributesCmd(
 
 static int
 WmClientCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),		/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     const char *argv3;
     int length;
 
@@ -1486,7 +1484,7 @@ WmClientCmd(
     if (wmPtr->clientMachine != NULL) {
 	ckfree(wmPtr->clientMachine);
     }
-    wmPtr->clientMachine = ckalloc(length + 1);
+    wmPtr->clientMachine = (char *)ckalloc(length + 1);
     strcpy(wmPtr->clientMachine, argv3);
     if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
 	XTextProperty textProp;
@@ -1541,7 +1539,7 @@ WmColormapwindowsCmd(
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     Window *cmapList;
     TkWindow *winPtr2;
     int count, i, windowObjc, gotToplevel;
@@ -1584,7 +1582,7 @@ WmColormapwindowsCmd(
 	    != TCL_OK) {
 	return TCL_ERROR;
     }
-    cmapList = ckalloc((windowObjc+1) * sizeof(Window));
+    cmapList = (Window *)ckalloc((windowObjc+1) * sizeof(Window));
     gotToplevel = 0;
     for (i = 0; i < windowObjc; i++) {
 	Tk_Window mapWin;
@@ -1636,13 +1634,13 @@ WmColormapwindowsCmd(
 
 static int
 WmCommandCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     const char *argv3;
     int cmdArgc;
     const char **cmdArgv;
@@ -1705,13 +1703,13 @@ WmCommandCmd(
 
 static int
 WmDeiconifyCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
 
     if (objc != 3) {
 	Tcl_WrongNumArgs(interp, 2, objv, "window");
@@ -1755,13 +1753,13 @@ WmDeiconifyCmd(
 
 static int
 WmFocusmodelCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     static const char *const optionStrings[] = {
 	"active", "passive", NULL };
     enum options {
@@ -1810,13 +1808,13 @@ WmFocusmodelCmd(
 
 static int
 WmForgetCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),		/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel or Frame to work with */
-    Tcl_Interp *interp,		/* Current interpreter. */
-    int objc,			/* Number of arguments. */
-    Tcl_Obj *const objv[])	/* Argument objects. */
+    TCL_UNUSED(Tcl_Interp *),		/* Current interpreter. */
+    TCL_UNUSED(int),			/* Number of arguments. */
+    TCL_UNUSED(Tcl_Obj *const *))	/* Argument objects. */
 {
-    register Tk_Window frameWin = (Tk_Window) winPtr;
+    Tk_Window frameWin = (Tk_Window) winPtr;
 
     if (Tk_IsTopLevel(frameWin)) {
 	TkFocusJoin(winPtr);
@@ -1863,13 +1861,13 @@ WmForgetCmd(
 
 static int
 WmFrameCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     Window window;
     char buf[TCL_INTEGER_SPACE];
 
@@ -1905,13 +1903,13 @@ WmFrameCmd(
 
 static int
 WmGeometryCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     char xSign, ySign;
     int width, height;
     const char *argv3;
@@ -1965,13 +1963,13 @@ WmGeometryCmd(
 
 static int
 WmGridCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     int reqWidth, reqHeight, widthInc, heightInc;
 
     if ((objc != 3) && (objc != 7)) {
@@ -2070,7 +2068,7 @@ WmGroupCmd(
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     Tk_Window tkwin2;
     WmInfo *wmPtr2;
     const char *argv3;
@@ -2114,7 +2112,7 @@ WmGroupCmd(
 	}
 	wmPtr->hints.window_group = Tk_WindowId(wmPtr2->wrapperPtr);
 	wmPtr->hints.flags |= WindowGroupHint;
-	wmPtr->leaderName = ckalloc(length + 1);
+	wmPtr->leaderName = (char *)ckalloc(length + 1);
 	strcpy(wmPtr->leaderName, argv3);
     }
     UpdateHints(winPtr);
@@ -2140,13 +2138,13 @@ WmGroupCmd(
 
 static int
 WmIconbitmapCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     Pixmap pixmap;
     const char *argv3;
 
@@ -2200,13 +2198,13 @@ WmIconbitmapCmd(
 
 static int
 WmIconifyCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
 
     if (objc != 3) {
 	Tcl_WrongNumArgs(interp, 2, objv, "window");
@@ -2275,7 +2273,7 @@ WmIconmaskCmd(
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     Pixmap pixmap;
     const char *argv3;
 
@@ -2328,13 +2326,13 @@ WmIconmaskCmd(
 
 static int
 WmIconnameCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     const char *argv3;
     int length;
 
@@ -2380,13 +2378,13 @@ WmIconnameCmd(
 
 static int
 WmIconphotoCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),		/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     Tk_PhotoHandle photo;
     Tk_PhotoImageBlock block;
     int i, size = 0, width, height, index = 0, x, y, isDefault = 0;
@@ -2437,7 +2435,7 @@ WmIconphotoCmd(
      * defines CARD32 arrays to use. [Bug 2902814]
      */
 
-    iconPropertyData = attemptckalloc(sizeof(unsigned long) * size);
+    iconPropertyData = (unsigned long *)attemptckalloc(sizeof(unsigned long) * size);
     if (iconPropertyData == NULL) {
 	return TCL_ERROR;
     }
@@ -2479,9 +2477,9 @@ WmIconphotoCmd(
 	iconPropertyData[index++] = (unsigned long) height;
 	for (y = 0; y < height; y++) {
 	    for (x = 0; x < width; x++) {
-		register unsigned char *pixelPtr =
+		unsigned char *pixelPtr =
 			block.pixelPtr + x*block.pixelSize + y*block.pitch;
-		register unsigned long R, G, B, A;
+		unsigned long R, G, B, A;
 
 		R = pixelPtr[block.offset[0]];
 		G = pixelPtr[block.offset[1]];
@@ -2530,13 +2528,13 @@ WmIconphotoCmd(
 
 static int
 WmIconpositionCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     int x, y;
 
     if ((objc != 3) && (objc != 5)) {
@@ -2593,7 +2591,7 @@ WmIconwindowCmd(
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     Tk_Window tkwin2;
     WmInfo *wmPtr2;
     XSetWindowAttributes atts;
@@ -2707,14 +2705,14 @@ WmIconwindowCmd(
 
 static int
 WmManageCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),		/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel or Frame to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
-    int objc,			/* Number of arguments. */
-    Tcl_Obj *const objv[])	/* Argument objects. */
+    TCL_UNUSED(int),			/* Number of arguments. */
+    TCL_UNUSED(Tcl_Obj *const *))	/* Argument objects. */
 {
-    register Tk_Window frameWin = (Tk_Window) winPtr;
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    Tk_Window frameWin = (Tk_Window) winPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
 
     if (!Tk_IsTopLevel(frameWin)) {
 	if (!Tk_IsManageable(frameWin)) {
@@ -2769,13 +2767,13 @@ WmManageCmd(
 
 static int
 WmMaxsizeCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     int width, height;
 
     if ((objc != 3) && (objc != 5)) {
@@ -2828,13 +2826,13 @@ WmMaxsizeCmd(
 
 static int
 WmMinsizeCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     int width, height;
 
     if ((objc != 3) && (objc != 5)) {
@@ -2879,7 +2877,7 @@ WmMinsizeCmd(
 
 static int
 WmOverrideredirectCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
@@ -2937,13 +2935,13 @@ WmOverrideredirectCmd(
 
 static int
 WmPositionfromCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     static const char *const optionStrings[] = {
 	"program", "user", NULL };
     enum options {
@@ -3004,14 +3002,14 @@ WmPositionfromCmd(
 
 static int
 WmProtocolCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),		/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
-    register ProtocolHandler *protPtr, *prevPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
+    ProtocolHandler *protPtr, *prevPtr;
     Atom protocol;
     const char *cmd;
     int cmdLength;
@@ -3082,7 +3080,7 @@ WmProtocolCmd(
     }
     cmd = Tcl_GetStringFromObj(objv[4], &cmdLength);
     if (cmdLength > 0) {
-	protPtr = ckalloc(HANDLER_SIZE(cmdLength));
+	protPtr = (ProtocolHandler *)ckalloc(HANDLER_SIZE(cmdLength));
 	protPtr->protocol = protocol;
 	protPtr->nextPtr = wmPtr->protPtr;
 	wmPtr->protPtr = protPtr;
@@ -3114,13 +3112,13 @@ WmProtocolCmd(
 
 static int
 WmResizableCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     int width, height;
 
     if ((objc != 3) && (objc != 5)) {
@@ -3173,13 +3171,13 @@ WmResizableCmd(
 
 static int
 WmSizefromCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     static const char *const optionStrings[] = {
 	"program", "user", NULL };
     enum options {
@@ -3365,13 +3363,13 @@ WmStackorderCmd(
 
 static int
 WmStateCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),	/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     static const char *const optionStrings[] = {
 	"normal", "iconic", "withdrawn", NULL };
     enum options {
@@ -3471,13 +3469,13 @@ WmStateCmd(
 
 static int
 WmTitleCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),		/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     const char *argv3;
     int length;
 
@@ -3496,7 +3494,7 @@ WmTitleCmd(
 	    ckfree(wmPtr->title);
 	}
 	argv3 = Tcl_GetStringFromObj(objv[3], &length);
-	wmPtr->title = ckalloc(length + 1);
+	wmPtr->title = (char *)ckalloc(length + 1);
 	strcpy(wmPtr->title, argv3);
 
 	if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
@@ -3531,7 +3529,7 @@ WmTransientCmd(
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     TkWindow *containerPtr = wmPtr->containerPtr, *w;
     WmInfo *wmPtr2;
 
@@ -3674,13 +3672,13 @@ WmTransientCmd(
 
 static int
 WmWithdrawCmd(
-    Tk_Window tkwin,		/* Main window of the application. */
+    TCL_UNUSED(Tk_Window),		/* Main window of the application. */
     TkWindow *winPtr,		/* Toplevel to work with */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
 
     if (objc != 3) {
 	Tcl_WrongNumArgs(interp, 2, objv, "window");
@@ -3729,7 +3727,7 @@ WmWaitMapProc(
     ClientData clientData,	/* Pointer to window. */
     XEvent *eventPtr)		/* Information about event. */
 {
-    TkWindow *winPtr = clientData;
+    TkWindow *winPtr = (TkWindow *)clientData;
     TkWindow *containerPtr = winPtr->wmInfoPtr->containerPtr;
 
     if (containerPtr == NULL) {
@@ -3780,7 +3778,7 @@ Tk_SetGrid(
 				 * of one grid unit. */
 {
     TkWindow *winPtr = (TkWindow *) tkwin;
-    register WmInfo *wmPtr;
+    WmInfo *wmPtr;
 
     /*
      * Ensure widthInc and heightInc are greater than 0
@@ -3885,7 +3883,7 @@ Tk_UnsetGrid(
 				 * controlling gridding. */
 {
     TkWindow *winPtr = (TkWindow *) tkwin;
-    register WmInfo *wmPtr;
+    WmInfo *wmPtr;
 
     /*
      * Find the top-level window for tkwin, plus the window manager
@@ -4418,7 +4416,7 @@ WrapperEventProc(
     ClientData clientData,	/* Information about toplevel window. */
     XEvent *eventPtr)		/* Event that just happened. */
 {
-    WmInfo *wmPtr = clientData;
+    WmInfo *wmPtr = (WmInfo *)clientData;
     XEvent mapEvent;
     TkDisplay *dispPtr = wmPtr->winPtr->dispPtr;
 
@@ -4498,10 +4496,9 @@ WrapperEventProc(
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 static void
 TopLevelReqProc(
-    ClientData dummy,		/* Not used. */
+    TCL_UNUSED(void *),		/* Not used. */
     Tk_Window tkwin)		/* Information about window. */
 {
     TkWindow *winPtr = (TkWindow *) tkwin;
@@ -4568,8 +4565,8 @@ static void
 UpdateGeometryInfo(
     ClientData clientData)	/* Pointer to the window's record. */
 {
-    register TkWindow *winPtr = clientData;
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    TkWindow *winPtr = (TkWindow *)clientData;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     int x, y, width, height, min, max;
     unsigned long serial;
 
@@ -4830,7 +4827,7 @@ UpdateSizeHints(
     int newWidth,
     int newHeight)
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     XSizeHints *hintsPtr;
     int maxWidth, maxHeight;
 
@@ -5307,7 +5304,7 @@ WaitRestrictProc(
     ClientData clientData,	/* Pointer to WaitRestrictInfo structure. */
     XEvent *eventPtr)		/* Event that is about to be handled. */
 {
-    WaitRestrictInfo *infoPtr = clientData;
+    WaitRestrictInfo *infoPtr = (WaitRestrictInfo *)clientData;
 
     if (eventPtr->type == ReparentNotify) {
 	return TK_PROCESS_EVENT;
@@ -5463,7 +5460,7 @@ SetNetWmType(
     }
 
     if (objc > 0) {
-	atoms = ckalloc(sizeof(Atom) * objc);
+	atoms = (Atom *)ckalloc(sizeof(Atom) * objc);
     }
 
     for (n = 0; n < objc; ++n) {
@@ -5576,10 +5573,10 @@ ParseGeometry(
     TkWindow *winPtr)		/* Pointer to top-level window whose geometry
 				 * is to be changed. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     int x, y, width, height, flags;
     char *end;
-    register const char *p = string;
+    const char *p = string;
 
     /*
      * The leading "=" is optional.
@@ -5712,7 +5709,7 @@ Tk_GetRootCoords(
     int *yPtr)			/* Where to store y-displacement of (0,0). */
 {
     int x, y;
-    register TkWindow *winPtr = (TkWindow *) tkwin;
+    TkWindow *winPtr = (TkWindow *) tkwin;
 
     /*
      * Search back through this window's parents all the way to a top-level
@@ -6179,7 +6176,7 @@ Tk_MoveToplevelWindow(
     int x, int y)		/* New location for window (within parent). */
 {
     TkWindow *winPtr = (TkWindow *) tkwin;
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
 
     if (!(winPtr->flags & TK_TOP_LEVEL)) {
 	Tcl_Panic("Tk_MoveToplevelWindow called with non-toplevel window");
@@ -6227,9 +6224,9 @@ Tk_MoveToplevelWindow(
 
 static void
 UpdateWmProtocols(
-    register WmInfo *wmPtr)	/* Information about top-level window. */
+    WmInfo *wmPtr)	/* Information about top-level window. */
 {
-    register ProtocolHandler *protPtr;
+    ProtocolHandler *protPtr;
     Atom deleteWindowAtom, pingAtom;
     int count;
     Atom *arrayPtr, *atomPtr;
@@ -6246,7 +6243,7 @@ UpdateWmProtocols(
 	    protPtr = protPtr->nextPtr, count++) {
 	/* Empty loop body; we're just counting the handlers. */
     }
-    arrayPtr = ckalloc(count * sizeof(Atom));
+    arrayPtr = (Atom *)ckalloc(count * sizeof(Atom));
     deleteWindowAtom = Tk_InternAtom((Tk_Window) wmPtr->winPtr,
 	    "WM_DELETE_WINDOW");
     pingAtom = Tk_InternAtom((Tk_Window) wmPtr->winPtr, "_NET_WM_PING");
@@ -6288,7 +6285,7 @@ TkWmProtocolEventProc(
     XEvent *eventPtr)		/* X event. */
 {
     WmInfo *wmPtr;
-    register ProtocolHandler *protPtr;
+    ProtocolHandler *protPtr;
     Atom protocol;
     int result;
     const char *protocolName;
@@ -6437,7 +6434,7 @@ TkWmStackorderToplevel(
     Tcl_InitHashTable(&table, TCL_ONE_WORD_KEYS);
     TkWmStackorderToplevelWrapperMap(parentPtr, parentPtr->display, &table);
 
-    window_ptr = windows = ckalloc((table.numEntries+1) * sizeof(TkWindow *));
+    window_ptr = windows = (TkWindow **)ckalloc((table.numEntries+1) * sizeof(TkWindow *));
     if (windows == NULL) {
 	return NULL;
     }
@@ -6453,7 +6450,7 @@ TkWmStackorderToplevel(
 	goto done;
     case 1:
 	hPtr = Tcl_FirstHashEntry(&table, &search);
-	windows[0] = Tcl_GetHashValue(hPtr);
+	windows[0] = (TkWindow *)Tcl_GetHashValue(hPtr);
 	windows[1] = NULL;
 	goto done;
     }
@@ -6469,9 +6466,9 @@ TkWmStackorderToplevel(
 	windows = NULL;
     } else {
 	for (i = 0; i < numChildren; i++) {
-	    hPtr = Tcl_FindHashEntry(&table, (char *) children[i]);
+	    hPtr = Tcl_FindHashEntry(&table, (char *)children[i]);
 	    if (hPtr != NULL) {
-		childWinPtr = Tcl_GetHashValue(hPtr);
+		childWinPtr = (TkWindow *)Tcl_GetHashValue(hPtr);
 		*window_ptr++ = childWinPtr;
 	    }
 	}
@@ -6644,7 +6641,7 @@ TkWmAddToColormapWindows(
      * add the toplevel itself as the last element of the list.
      */
 
-    newPtr = ckalloc((count+2) * sizeof(Window));
+    newPtr = (Window *)ckalloc((count+2) * sizeof(Window));
     for (i = 0; i < count; i++) {
 	newPtr[i] = oldPtr[i];
     }
@@ -6879,7 +6876,7 @@ GetMaxSize(
 static void
 TkSetTransientFor(Tk_Window tkwin, Tk_Window parent)
 {
-    if (parent == None) {
+    if (parent == NULL) {
 	parent = Tk_Parent(tkwin);
 	while (!Tk_IsTopLevel(parent))
 	    parent = Tk_Parent(parent);
@@ -6997,7 +6994,7 @@ CreateWrapper(
     TkWindow *winPtr, *wrapperPtr;
     Window parent;
     Tcl_HashEntry *hPtr;
-    int new;
+    int isNew;
 
     winPtr = wmPtr->winPtr;
     if (winPtr->window == None) {
@@ -7041,7 +7038,7 @@ CreateWrapper(
 	    InputOutput, wrapperPtr->visual,
 	    wrapperPtr->dirtyAtts|CWOverrideRedirect, &wrapperPtr->atts);
     hPtr = Tcl_CreateHashEntry(&wrapperPtr->dispPtr->winTable,
-	    (char *) wrapperPtr->window, &new);
+	    (char *) wrapperPtr->window, &isNew);
     Tcl_SetHashValue(hPtr, wrapperPtr);
     wrapperPtr->mainPtr = winPtr->mainPtr;
     wrapperPtr->mainPtr->refCount++;
@@ -7260,7 +7257,7 @@ MenubarReqProc(
 				 * for tkwin's toplevel. */
     Tk_Window tkwin)		/* Handle for menubar window. */
 {
-    WmInfo *wmPtr = clientData;
+    WmInfo *wmPtr = (WmInfo *)clientData;
 
     wmPtr->menuHeight = Tk_ReqHeight(tkwin);
     if (wmPtr->menuHeight <= 0) {
@@ -7295,7 +7292,7 @@ TkWindow *
 TkpGetWrapperWindow(
     TkWindow *winPtr)		/* A toplevel window pointer. */
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
 
     if ((winPtr == NULL) || (wmPtr == NULL)) {
 	return NULL;
@@ -7325,7 +7322,7 @@ static void
 UpdateCommand(
     TkWindow *winPtr)
 {
-    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
     Tcl_DString cmds, ds;
     int i, *offsets;
     char **cmdArgv;
@@ -7342,8 +7339,8 @@ UpdateCommand(
      * entire DString is done.
      */
 
-    cmdArgv = ckalloc(sizeof(char *) * wmPtr->cmdArgc);
-    offsets = ckalloc(sizeof(int) * wmPtr->cmdArgc);
+    cmdArgv = (char **)ckalloc(sizeof(char *) * wmPtr->cmdArgc);
+    offsets = (int *)ckalloc(sizeof(int) * wmPtr->cmdArgc);
     Tcl_DStringInit(&cmds);
     for (i = 0; i < wmPtr->cmdArgc; i++) {
 	Tcl_UtfToExternalDString(NULL, wmPtr->cmdArgv[i], -1, &ds);