From a59f2dfd0cf9ee1a584d3de5b7c2d47648e79060 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Wed, 11 May 2022 11:42:28 +0100
Subject: patch 8.2.4938: crash when matching buffer with invalid pattern

Problem:    Crash when matching buffer with invalid pattern.
Solution:   Check for NULL regprog.
---
 src/testdir/test_buffer.vim | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/testdir/test_buffer.vim')

diff --git a/src/testdir/test_buffer.vim b/src/testdir/test_buffer.vim
index aea3995587..55ef0fda76 100644
--- a/src/testdir/test_buffer.vim
+++ b/src/testdir/test_buffer.vim
@@ -415,6 +415,10 @@ func Test_buf_pattern_invalid()
   vsplit 0000000
   silent! buf [0--]\&\zs*\zs*e
   bwipe!
+
+  vsplit 00000000000000000000000000
+  silent! buf [0--]\&\zs*\zs*e
+  bwipe!
 endfunc
 
 " Test for the 'maxmem' and 'maxmemtot' options
-- 
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