Fix crash on resize

Prevent to realloc xw.specbuc with a negative number of col.
Add proper hints for the minimal size, for one character.

1 files changed, 8 insertions, 4 deletions

diff --git a/x.c b/x.c
index c0bd890..00cb6b1 100644
--- a/x.c
+++ b/x.c
@@ -672,6 +672,8 @@ cresize(int width, int height)
 
         col = (win.w - 2 * borderpx) / win.cw;
         row = (win.h - 2 * borderpx) / win.ch;
+        col = MAX(1, col);
+        row = MAX(1, row);
 
         tresize(col, row);
         xresize(col, row);
@@ -681,8 +683,8 @@ cresize(int width, int height)
 void
 xresize(int col, int row)
 {
-        win.tw = MAX(1, col * win.cw);
-        win.th = MAX(1, row * win.ch);
+        win.tw = col * win.cw;
+        win.th = row * win.ch;
 
         XFreePixmap(xw.dpy, xw.buf);
         xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
@@ -788,15 +790,17 @@ xhints(void)
 
         sizeh = XAllocSizeHints();
 
-        sizeh->flags = PSize | PResizeInc | PBaseSize;
+        sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
         sizeh->height = win.h;
         sizeh->width = win.w;
         sizeh->height_inc = win.ch;
         sizeh->width_inc = win.cw;
         sizeh->base_height = 2 * borderpx;
         sizeh->base_width = 2 * borderpx;
+        sizeh->min_height = win.ch + 2 * borderpx;
+        sizeh->min_width = win.cw + 2 * borderpx;
         if (xw.isfixed) {
-                sizeh->flags |= PMaxSize | PMinSize;
+                sizeh->flags |= PMaxSize;
                 sizeh->min_width = sizeh->max_width = win.w;
                 sizeh->min_height = sizeh->max_height = win.h;
         }