fix crash if negative monitor (< -1) was passed

[dmenu.git] / dmenu.c

diff --git a/dmenu.c b/dmenu.c
index 0e7b70b..df51e76 100644 (file)
--- a/dmenu.c
+++ b/dmenu.c
@@ -81,10 +81,10 @@ calcoffsets(void)
                n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
        /* calculate which items will begin the next page and previous page */
        for (i = 0, next = curr; next; next = next->right)
-               if ((i += (lines > 0) ? bh : TEXTW(next->text)) > n)
+               if ((i += (lines > 0) ? bh : MIN(TEXTW(next->text), n)) > n)
                        break;
        for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
-               if ((i += (lines > 0) ? bh : TEXTW(prev->left->text)) > n)
+               if ((i += (lines > 0) ? bh : MIN(TEXTW(prev->left->text), n)) > n)
                        break;
 }
 
@@ -480,7 +480,7 @@ readstdin(void)
        }
        if (items)
                items[i].text = NULL;
-       inputw = TEXTW(items[imax].text);
+       inputw = items ? TEXTW(items[imax].text) : 0;
        lines = MIN(lines, i);
 }
 
@@ -541,7 +541,7 @@ setup(void)
 #ifdef XINERAMA
        if ((info = XineramaQueryScreens(dpy, &n))) {
                XGetInputFocus(dpy, &w, &di);
-               if (mon != -1 && mon < n)
+               if (mon >= 0 && mon < n)
                        i = mon;
                else if (w != root && w != PointerRoot && w != None) {
                        /* find top-level window containing current input focus */
@@ -558,7 +558,7 @@ setup(void)
                                        }
                }
                /* no focused window is on screen, so use pointer location instead */
-               if (mon == -1 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
+               if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
                        for (i = 0; i < n; i++)
                                if (INTERSECT(x, y, 1, 1, info[i]))
                                        break;