vim-patch:7.4.2347

Problem:    Crash when closing a buffer while Visual mode is active.
            (Dominique Pelle)
Solution:   Adjust the position before computing the number of lines.
            When closing the current buffer stop Visual mode.

c4a908e836

src/nvim/buffer.c

@@ -438,6 +438,13 @@ void close_buffer(win_T *win, buf_T *buf, int action, int abort_if_last)
   /* Remember if we are closing the current buffer.  Restore the number of
    * windows, so that autocommands in buf_freeall() don't get confused. */
   bool is_curbuf = (buf == curbuf);
+
+  // When closing the current buffer stop Visual mode before freeing
+  // anything.
+  if (is_curbuf) {
+    end_visual_mode();
+  }
+
   buf->b_nwindows = nwindows;
 
   buf_freeall(buf, (del_buf ? BFA_DEL : 0) + (wipe_buf ? BFA_WIPE : 0));
@@ -1075,6 +1082,11 @@ do_buffer (
       }
     }
 
+    // When closing the current buffer stop Visual mode.
+    if (buf == curbuf) {
+      end_visual_mode();
+    }
+
     /*
      * If deleting the last (listed) buffer, make it empty.
      * The last (listed) buffer cannot be unloaded.

src/nvim/normal.c

@@ -1596,6 +1596,8 @@ void do_pending_operator(cmdarg_T *cap, int old_col, bool gui_yank)
       oap->start = curwin->w_cursor;
     }
 
+    // Just in case lines were deleted that make the position invalid.
+    check_pos(curwin->w_buffer, &oap->end);
     oap->line_count = oap->end.lnum - oap->start.lnum + 1;
 
     /* Set "virtual_op" before resetting VIsual_active. */
@@ -7831,7 +7833,6 @@ static void get_op_vcol(
 
   // prevent from moving onto a trail byte
   if (has_mbyte) {
-    check_pos(curwin->w_buffer, &oap->end);
     mb_adjustpos(curwin->w_buffer, &oap->end);
   }
 

src/nvim/testdir/test_normal.vim

@@ -1998,3 +1998,17 @@ func! Test_normal46_ignore()
   " clean up
   bw!
 endfu
+
+func! Test_normal47_visual_buf_wipe()
+  " This was causing a crash or ml_get error.
+  enew!
+  call setline(1,'xxx')
+  normal $
+  new
+  call setline(1, range(1,2))
+  2
+  exe "norm \<C-V>$"
+  bw!
+  norm yp
+  set nomodified
+endfu

src/nvim/version.c

@@ -94,7 +94,7 @@ static int included_patches[] = {
   // 2350,
   // 2349,
   // 2348,
-  // 2347,
+  2347,
   // 2346,
   // 2345 NA
   // 2344 NA