From 9403ce82bce1a2dcda4b01b10b2c01ee42bb4034 Mon Sep 17 00:00:00 2001
From: watiko <service@mail.watiko.net>
Date: Tue, 16 Feb 2016 23:05:47 +0900
Subject: vim-patch:7.4.936 #4271

Problem:    Crash when dragging with the mouse.
Solution:   Add safety check for NULL pointer. Check mouse position for valid
            value. (Hirohito Higashi)

https://github.com/vim/vim/commit/294a7e55b01149154807a23323038784549b8946

---

see: "Crash while mouse-selecting in two-buffer mode"
     https://github.com/vim/vim/issues/486

Fix #3704
---
 src/nvim/os/input.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/nvim/os')

diff --git a/src/nvim/os/input.c b/src/nvim/os/input.c
index e632544856..f317fd6b5a 100644
--- a/src/nvim/os/input.c
+++ b/src/nvim/os/input.c
@@ -250,6 +250,14 @@ static unsigned int handle_mouse_event(char **ptr, uint8_t *buf,
   int col, row, advance;
   if (sscanf(*ptr, "<%d,%d>%n", &col, &row, &advance) != EOF && advance) {
     if (col >= 0 && row >= 0) {
+      // Make sure the mouse position is valid.  Some terminals may
+      // return weird values.
+      if (col >= Columns) {
+        col = (int)Columns - 1;
+      }
+      if (row >= Rows) {
+        row = (int)Rows - 1;
+      }
       mouse_row = row;
       mouse_col = col;
     }
-- 
cgit