From bae8a19c63381c3f6c860bae75af3580d68bf3b3 Mon Sep 17 00:00:00 2001
From: Michael Ennen <mike.ennen@gmail.com>
Date: Mon, 19 Dec 2016 17:24:21 -0700
Subject: vim-patch:7.4.2235

Problem:    submatch() does not check for a valid argument.
Solution:   Give an error if the argument is out of range. (Dominique Pelle)

https://github.com/vim/vim/commit/989f592f7ffcbafdc4ec35cee4dc65bd053e2077
---
 src/nvim/testdir/test_expr.vim | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/nvim/testdir')

diff --git a/src/nvim/testdir/test_expr.vim b/src/nvim/testdir/test_expr.vim
index 3b87c4b087..7ceef2834f 100644
--- a/src/nvim/testdir/test_expr.vim
+++ b/src/nvim/testdir/test_expr.vim
@@ -125,6 +125,11 @@ func Test_substitute_expr()
   call assert_equal('--', substitute('xxx', 'x*', {-> '-' . Recurse() . '-'}, ''))
 endfunc
 
+func Test_invalid_submatch()
+  " This was causing invalid memory access in Vim-7.4.2232 and older
+  call assert_fails("call substitute('x', '.', {-> submatch(10)}, '')", 'E935:')
+endfunc
+
 func Test_substitute_expr_arg()
   call assert_equal('123456789-123456789=', substitute('123456789',
 	\ '\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)',
-- 
cgit