X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fbase%2Fwresize.c;h=bc6b5732ea41fe05aa46ed575c2db9af8d6b7389;hp=d5ce3974e278b0cab85edd147ca2a354a8c55012;hb=0819b56c3096ed77dd36312b0c4e8f37e7d46c88;hpb=3a0d9d27e0cf115ff9dcc6163c251bccaa62bd7d

diff --git a/ncurses/base/wresize.c b/ncurses/base/wresize.c
index d5ce3974..bc6b5732 100644
--- a/ncurses/base/wresize.c
+++ b/ncurses/base/wresize.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2010,2011 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -33,7 +33,7 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: wresize.c,v 1.32 2009/10/24 22:15:00 tom Exp $")
+MODULE_ID("$Id: wresize.c,v 1.35 2011/05/21 18:55:07 tom Exp $")
 
 static int
 cleanup_lines(struct ldat *data, int length)
@@ -71,9 +71,9 @@ repair_subwindows(WINDOW *cmp)
 		tst->_parx = cmp->_maxx;
 
 	    if (tst->_maxy + tst->_pary > cmp->_maxy)
-		tst->_maxy = cmp->_maxy - tst->_pary;
+		tst->_maxy = (NCURSES_SIZE_T) (cmp->_maxy - tst->_pary);
 	    if (tst->_maxx + tst->_parx > cmp->_maxx)
-		tst->_maxx = cmp->_maxx - tst->_parx;
+		tst->_maxx = (NCURSES_SIZE_T) (cmp->_maxx - tst->_parx);
 
 	    for (row = 0; row <= tst->_maxy; ++row) {
 		tst->_line[row].text = &pline[tst->_pary + row].text[tst->_parx];
@@ -157,7 +157,8 @@ wresize(WINDOW *win, int ToLines, int ToCols)
 	if (!(win->_flags & _SUBWIN)) {
 	    if (row <= size_y) {
 		if (ToCols != size_x) {
-		    if ((s = typeMalloc(NCURSES_CH_T, ToCols + 1)) == 0)
+		    s = typeMalloc(NCURSES_CH_T, (unsigned) ToCols + 1);
+		    if (s == 0)
 			returnCode(cleanup_lines(new_lines, row));
 		    for (col = 0; col <= ToCols; ++col) {
 			s[col] = (col <= size_x
@@ -168,13 +169,16 @@ wresize(WINDOW *win, int ToLines, int ToCols)
 		    s = win->_line[row].text;
 		}
 	    } else {
-		if ((s = typeMalloc(NCURSES_CH_T, ToCols + 1)) == 0)
+		s = typeMalloc(NCURSES_CH_T, (unsigned) ToCols + 1);
+		if (s == 0)
 		    returnCode(cleanup_lines(new_lines, row));
 		for (col = 0; col <= ToCols; ++col)
 		    s[col] = win->_nc_bkgd;
 	    }
-	} else {
+	} else if (pline != 0 && pline[win->_pary + row].text != 0) {
 	    s = &pline[win->_pary + row].text[win->_parx];
+	} else {
+	    s = 0;
 	}
 
 	if_USE_SCROLL_HINTS(new_lines[row].oldindex = row);
@@ -185,11 +189,11 @@ wresize(WINDOW *win, int ToLines, int ToCols)
 	if ((ToCols != size_x) || (row > size_y)) {
 	    if (end >= begin) {	/* growing */
 		if (new_lines[row].firstchar < begin)
-		    new_lines[row].firstchar = begin;
+		    new_lines[row].firstchar = (NCURSES_SIZE_T) begin;
 	    } else {		/* shrinking */
 		new_lines[row].firstchar = 0;
 	    }
-	    new_lines[row].lastchar = ToCols;
+	    new_lines[row].lastchar = (NCURSES_SIZE_T) ToCols;
 	}
 	new_lines[row].text = s;
     }
@@ -216,8 +220,8 @@ wresize(WINDOW *win, int ToLines, int ToCols)
      * Finally, adjust the parameters showing screen size and cursor
      * position:
      */
-    win->_maxx = ToCols;
-    win->_maxy = ToLines;
+    win->_maxx = (NCURSES_SIZE_T) ToCols;
+    win->_maxy = (NCURSES_SIZE_T) ToLines;
 
     if (win->_regtop > win->_maxy)
 	win->_regtop = win->_maxy;