Added NULL checks on all rectangle pointers.

windows/rect.c

@@ -29,6 +29,7 @@ void WINAPI SetRect16( LPRECT16 rect, INT16 left, INT16 top,
 BOOL WINAPI SetRect( LPRECT rect, INT left, INT top,
                        INT right, INT bottom )
 {
+    if (!rect) return FALSE;
     rect->left   = left;
     rect->right  = right;
     rect->top    = top;
@@ -51,6 +52,7 @@ void WINAPI SetRectEmpty16( LPRECT16 rect )
  */
 BOOL WINAPI SetRectEmpty( LPRECT rect )
 {
+    if (!rect) return FALSE;
     rect->left = rect->right = rect->top = rect->bottom = 0;
     return TRUE;
 }
@@ -96,6 +98,7 @@ BOOL16 WINAPI IsRectEmpty16( const RECT16 *rect )
  */
 BOOL WINAPI IsRectEmpty( const RECT *rect )
 {
+    if (!rect) return TRUE;
     return ((rect->left >= rect->right) || (rect->top >= rect->bottom));
 }
 
@@ -115,6 +118,7 @@ BOOL16 WINAPI PtInRect16( const RECT16 *rect, POINT16 pt )
  */
 BOOL WINAPI PtInRect( const RECT *rect, POINT pt )
 {
+    if (!rect) return FALSE;
     return ((pt.x >= rect->left) && (pt.x < rect->right) &&
 	    (pt.y >= rect->top) && (pt.y < rect->bottom));
 }
@@ -137,6 +141,7 @@ void WINAPI OffsetRect16( LPRECT16 rect, INT16 x, INT16 y )
  */
 BOOL WINAPI OffsetRect( LPRECT rect, INT x, INT y )
 {
+    if (!rect) return FALSE;
     rect->left   += x;
     rect->right  += x;
     rect->top    += y;
@@ -162,6 +167,7 @@ void WINAPI InflateRect16( LPRECT16 rect, INT16 x, INT16 y )
  */
 BOOL WINAPI InflateRect( LPRECT rect, INT x, INT y )
 {
+    if (!rect) return FALSE;
     rect->left   -= x;
     rect->top 	 -= y;
     rect->right  += x;
@@ -197,6 +203,7 @@ BOOL16 WINAPI IntersectRect16( LPRECT16 dest, const RECT16 *src1,
 BOOL WINAPI IntersectRect( LPRECT dest, const RECT *src1,
                                const RECT *src2 )
 {
+    if (!dest || !src1 || !src2) return FALSE;
     if (IsRectEmpty(src1) || IsRectEmpty(src2) ||
 	(src1->left >= src2->right) || (src2->left >= src1->right) ||
 	(src1->top >= src2->bottom) || (src2->top >= src1->bottom))
@@ -248,6 +255,7 @@ BOOL16 WINAPI UnionRect16( LPRECT16 dest, const RECT16 *src1,
 BOOL WINAPI UnionRect( LPRECT dest, const RECT *src1,
                            const RECT *src2 )
 {
+    if (!dest) return FALSE;
     if (IsRectEmpty(src1))
     {
 	if (IsRectEmpty(src2))
@@ -287,6 +295,7 @@ BOOL16 WINAPI EqualRect16( const RECT16* rect1, const RECT16* rect2 )
  */
 BOOL WINAPI EqualRect( const RECT* rect1, const RECT* rect2 )
 {
+    if (!rect1 || !rect2) return FALSE;
     return ((rect1->left == rect2->left) && (rect1->right == rect2->right) &&
 	    (rect1->top == rect2->top) && (rect1->bottom == rect2->bottom));
 }
@@ -336,6 +345,7 @@ BOOL WINAPI SubtractRect( LPRECT dest, const RECT *src1,
 {
     RECT tmp;
 
+    if (!dest) return FALSE;
     if (IsRectEmpty( src1 ))
     {
 	SetRectEmpty( dest );