check for negatives in cursor address sequence

[unix-history] / usr / src / usr.bin / window / wwwrite.c

diff --git a/usr/src/usr.bin/window/wwwrite.c b/usr/src/usr.bin/window/wwwrite.c
index 80465dc..16d1400 100644 (file)
--- a/usr/src/usr.bin/window/wwwrite.c
+++ b/usr/src/usr.bin/window/wwwrite.c
@@ -1,5 +1,5 @@
 #ifndef lint
 #ifndef lint

-static char *sccsid = "@(#)wwwrite.c   3.14 83/12/02";
+static char *sccsid = "@(#)wwwrite.c   3.15 83/12/06";

 #endif
 
 #include "ww.h"
 #endif
 
 #include "ww.h"


@@ -185,11 +185,13 @@ int n;
                        }
                        break;
                case 2:
                        }
                        break;
                case 2:

-                       w->ww_cur.r = w->ww_w.t + (*p++ - ' ') % w->ww_w.nr;
+                       w->ww_cur.r = w->ww_w.t +
+                               (unsigned)(*p++ - ' ') % w->ww_w.nr;

                        w->ww_wstate = 3;
                        break;
                case 3:
                        w->ww_wstate = 3;
                        break;
                case 3:

-                       w->ww_cur.c = w->ww_w.l + (*p++ - ' ') % w->ww_w.nc;
+                       w->ww_cur.c = w->ww_w.l +
+                               (unsigned)(*p++ - ' ') % w->ww_w.nc;

                        w->ww_wstate = 0;
                        break;
                }
                        w->ww_wstate = 0;
                        break;
                }