From cf0f9311ab49e55912cbadc7e24ebd44e188e42d Mon Sep 17 00:00:00 2001
From: "Darryl L. Miles" <darryl.miles@darrylmiles.org>
Date: Mon, 17 Feb 2025 09:52:39 +0000
Subject: [PATCH] plowFindWidthBack() pass by-pointer const TileTypeBitMask*
 instead of by-value

sizeof(TileTypeBitMask) == 32
---
 plow/PlowJogs.c  |  2 +-
 plow/PlowTest.c  |  2 +-
 plow/PlowWidth.c | 12 ++++++------
 plow/plowInt.h   |  2 +-
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/plow/PlowJogs.c b/plow/PlowJogs.c
index 63bbf530..3df6c452 100644
--- a/plow/PlowJogs.c
+++ b/plow/PlowJogs.c
@@ -353,7 +353,7 @@ plowProcessJogFunc(edge, area)
      * all of the LHS of the jog.
      */
     TTMaskSetOnlyType(&mask, edge->e_ltype);
-    width = plowFindWidthBack(&newedge, mask, area, (Rect *) NULL);
+    width = plowFindWidthBack(&newedge, &mask, area, (Rect *) NULL);
     r.r_xtop = newedge.e_x;
     r.r_xbot = newedge.e_x - width - 1;
     r.r_ytop = newedge.e_ytop;
diff --git a/plow/PlowTest.c b/plow/PlowTest.c
index ab2b7d6e..49b3fcd3 100644
--- a/plow/PlowTest.c
+++ b/plow/PlowTest.c
@@ -294,7 +294,7 @@ PlowTest(w, cmd)
 		editArea.r_ybot, editArea.r_ytop);
 	    saveDef = plowYankDef;
 	    plowYankDef = def;
-	    (void) plowFindWidthBack(&edge, okTypes, &def->cd_bbox, &editArea);
+	    (void) plowFindWidthBack(&edge, &okTypes, &def->cd_bbox, &editArea);
 	    plowYankDef = saveDef;
 	    GeoTransRect(&EditToRootTransform, &editArea, &rootBox);
 	    ToolMoveBox(TOOL_BL, &rootBox.r_ll, FALSE, rootBoxDef);
diff --git a/plow/PlowWidth.c b/plow/PlowWidth.c
index d1af6bfe..5de5ff6d 100644
--- a/plow/PlowWidth.c
+++ b/plow/PlowWidth.c
@@ -320,13 +320,12 @@ clipright:
  */
 
 int
-plowFindWidthBack(edge, types, bbox, prect)
-    Edge *edge;			/* Edge along the RHS of this material */
-    TileTypeBitMask types;	/* Types whose width is being computed.  Note
-				 * that this set is passed by value.
+plowFindWidthBack(
+    Edge *edge,			/* Edge along the RHS of this material */
+    const TileTypeBitMask *typesp,/* Types whose width is being computed.
 				 */
-    Rect *bbox;			/* Bounding box of the cell */
-    Rect *prect;		/* (Debugging only): if this is non-NULL,
+    Rect *bbox,			/* Bounding box of the cell */
+    Rect *prect)		/* (Debugging only): if this is non-NULL,
 				 * the rectangle it points to is filled
 				 * in with the rectangle found by this
 				 * algorithm to be the largest containing
@@ -334,6 +333,7 @@ plowFindWidthBack(edge, types, bbox, prect)
 				 * set 'types'.
 				 */
 {
+    TileTypeBitMask types = *typesp; /* TTMaskCopy(&types, typesp); */
     Plane *plane = plowYankDef->cd_planes[edge->e_pNum];
     TileTypeBitMask ctypes;
     struct wclip wc;
diff --git a/plow/plowInt.h b/plow/plowInt.h
index a9f3512d..fbd0d575 100644
--- a/plow/plowInt.h
+++ b/plow/plowInt.h
@@ -258,7 +258,7 @@ extern int  plowAtomize();
 extern void plowCleanupJogs();
 extern void plowDebugEdge();
 extern int  plowFindWidth(Edge *edge, const TileTypeBitMask *typesp, Rect *bbox, Rect *prect);
-extern int  plowFindWidthBack();
+extern int  plowFindWidthBack(Edge *edge, const TileTypeBitMask *typesp, Rect *bbox, Rect *prect);
 extern int  plowGenRandom();
 extern void plowQueueDone();
 extern void plowQueueInit();