File _service:extract_file:backport-CVE-2022-1733.patch of Package vim

File _service:extract_file:backport-CVE-2022-1733.patch of Package vim (Revision 123bf5b7bed8e474fdda12d55c662711)

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From 60ae0e71490c97f2871a6344aca61cacf220f813 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Mon, 16 May 2022 18:06:15 +0100
Subject: [PATCH] patch 8.2.4968: reading past end of the line when C-indenting

Problem:    Reading past end of the line when C-indenting.
Solution:   Check for NUL.
---
 src/cindent.c                | 2 +-
 src/testdir/test_cindent.vim | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/cindent.c b/src/cindent.c
index 28d1558..1b2763f 100644
--- a/src/cindent.c
+++ b/src/cindent.c
@@ -91,7 +91,7 @@ skip_string(char_u *p)
 		while (vim_isdigit(p[i - 1]))   // '\000'
 		    ++i;
 	    }
-	    if (p[i] == '\'')		    // check for trailing '
+	    if (p[i - 1] != NUL && p[i] == '\'')    // check for trailing '
 	    {
 		p += i;
 		continue;
diff --git a/src/testdir/test_cindent.vim b/src/testdir/test_cindent.vim
index 2a87460..3b2200a 100644
--- a/src/testdir/test_cindent.vim
+++ b/src/testdir/test_cindent.vim
@@ -5263,4 +5263,11 @@ func Test_find_brace_backwards()
 endfunc
 
 
+" This was reading past the end of the line
+func Test_cindent_check_funcdecl()
+  new
+  sil norm o0('\0=L
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
-- 
1.8.3.1