--- netmenu/NMshowcell.c.orig	2006-04-11 07:03:14.000000000 +0900

+++ netmenu/NMshowcell.c	2012-09-13 00:21:50.000000000 +0900

@@ -92,7 +92,7 @@

      * this window.

      */

-    if (((CellUse *)(window->w_surfaceID))->cu_def != nmscRootDef) return;

+    if (((CellUse *)(window->w_surfaceID))->cu_def != nmscRootDef) return 0;

     /* If this window is zoomed way out (less than 1 pixel per lambda)

      * use solid highlighting to maximize visibility.  It the window

@@ -109,7 +109,7 @@

      * redraw.

      */

-    if (!DBBoundPlane(plane, &area)) return;

+    if (!DBBoundPlane(plane, &area)) return 0;

     nmscPlane = plane;

     for (i = PL_TECHDEPBASE; i < DBNumPlanes; i += 1)

     {

@@ -330,7 +330,7 @@

 	if (NMCurNetName == NULL)

 	{

 	    TxError("You must select a net before you can trace it.\n");

-	    return;

+	    return 0;

 	}

 	else netName = NMCurNetName;

     }

@@ -344,7 +344,7 @@

     {

 	TxError("The net list has no net containing the terminal \"%s\"\n",

 	    netName);

-	return;

+	return 0;

     }

     (void) NMEnumTerms(NMCurNetName, nmShowRoutedNetFunc,

 	    (ClientData) EditCellUse);

--- netmenu/NMshowpt.c.orig	2006-04-11 07:03:14.000000000 +0900

+++ netmenu/NMshowpt.c	2012-09-13 00:10:41.000000000 +0900

@@ -86,8 +86,8 @@

      * root definition for this window is the edit's root definition.

      */

-    if (nmspArrayUsed == 0) return;

-    if (((CellUse *)(window->w_surfaceID))->cu_def != EditRootDef) return;

+    if (nmspArrayUsed == 0) return 0;

+    if (((CellUse *)(window->w_surfaceID))->cu_def != EditRootDef) return 0;

     for (i = 0; i < nmspArrayUsed; i += 1)

     {

--- netmenu/NMwiring.c.orig	2006-04-11 07:03:14.000000000 +0900

+++ netmenu/NMwiring.c	2012-09-13 00:30:35.000000000 +0900

@@ -162,7 +162,7 @@

     /* Collect all the connected areas together into a list. */

     list = NULL;

-    if (!ToolGetEditBox(&area)) return;

+    if (!ToolGetEditBox(&area)) return 0;

     /* Expand the box to get everything touching it. */

@@ -537,7 +537,7 @@

     Rect area;

     char *net = NULL;

-    if (!ToolGetEditBox(&area)) return;

+    if (!ToolGetEditBox(&area)) return 0;

     /* Expand the box area so we'll pick up everything touching it. */

--- plow/PlowRules2.c.orig	2007-04-21 02:57:00.000000000 +0900

+++ plow/PlowRules2.c	2012-09-13 00:39:42.000000000 +0900

@@ -250,7 +250,7 @@

     tp = TiSrPointNoHint(plowYankDef->cd_planes[edge->e_pNum], &p);

     pr = plowSpacingRulesTbl[edge->e_ltype][TiGetTypeExact(tp)];

     if (pr == (PlowRule *) NULL)

-	return;

+	return (0);

     searchRect.r_xbot = edge->e_x - 1;

     searchRect.r_ytop = edge->e_ybot;

@@ -514,7 +514,7 @@

     startPoint.p_y = edge->e_ybot - 1;

     tp = TiSrPointNoHint(plowYankDef->cd_planes[edge->e_pNum], &startPoint);

     if (TiGetTypeExact(tp) == TT_SPACE)

-	return;

+	return (0);

     ltype = edge->e_ltype;

     rtype = TiGetTypeExact(tp);

@@ -604,7 +604,7 @@

 		GMASK_EAST|GMASK_WEST|GMASK_NORTH|GMASK_SOUTH,

 		plowIllegalBotProc, (ClientData) &ar);

     if (ar.ar_slivtype == (TileType) -1)

-	return;

+	return (0);

     startPoint.p_x = ar.ar_mustmove;

     TTMaskSetOnlyType(&insideTypes, ar.ar_slivtype);