From aecbbb0b11168a10e5e11e530ef0b10e3aed8a4f Mon Sep 17 00:00:00 2001
From: Jan Edmund Lazo <jan.lazo@mail.utoronto.ca>
Date: Sun, 9 Jun 2019 16:12:04 -0400
Subject: vim-patch:8.1.1509: cmdline_row can become negative, causing a crash

Problem:    Cmdline_row can become negative, causing a crash.
Solution:   Make sure cmdline_row does not become negagive. (closes vim/vim#4102)
https://github.com/vim/vim/commit/954bb0636390751c0665d7d730a13d86dc5bc6e6
---
 src/nvim/misc1.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/nvim/misc1.c b/src/nvim/misc1.c
index c8d85328d2..6da2a8f786 100644
--- a/src/nvim/misc1.c
+++ b/src/nvim/misc1.c
@@ -2508,9 +2508,10 @@ int prompt_for_number(int *mouse_used)
 
   i = get_number(TRUE, mouse_used);
   if (KeyTyped) {
-    /* don't call wait_return() now */
-    /* msg_putchar('\n'); */
-    cmdline_row = msg_row - 1;
+    // don't call wait_return() now
+    if (msg_row > 0) {
+      cmdline_row = msg_row - 1;
+    }
     need_wait_return = FALSE;
     msg_didany = FALSE;
     msg_didout = FALSE;
-- 
cgit