fix a segfault

diff --git a/display.c b/display.c
index 74a699c49ed18040bce6f4834c8255f403ffd53b..983469af8cc3a51e83e7efee8557c6790b6e3309 100644 (file)
--- a/display.c
+++ b/display.c
@@ -629,6 +629,15 @@ char *filewindow (char *name, window_t *win)
         _dobound (win->xsize, win->ysize, win->xoffset, win->yoffset);
 
         char percent[4] = {' ', ' ', ' ', 0};
+
+        if (GETSKIP (skip, sskip) + win ->ysize> len ) {
+            sskip = 0;
+            skip = len - win ->ysize;
+            if (skip < 0) {
+                skip = 0;
+            }
+        }
+
         int ratio = (GETSKIP (skip, sskip) + win->ysize > len) ? 100 : 100 * (GETSKIP (skip, sskip) + win->ysize) / len;
         for (i = 2; (i >= 0) && (ratio > 0); i--, ratio /= 10) {
             percent[i] = '0' + (ratio % 10);