blob: 59c25d8c343663ded46d6f68bd7eb4a74df7315a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
From d1d8f6bacb489036d0fd479c9dd3c0102c988889 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Sun, 14 Aug 2022 21:28:32 +0100
Subject: [PATCH] patch 9.0.0211: invalid memory access when compiling :lockvar
Problem: Invalid memory access when compiling :lockvar.
Solution: Don't read past the end of the line.
---
diff --git a/src/vim9cmds.c b/src/vim9cmds.c
index ad32c32ff7cb..35a382138bf3 100644
--- a/src/vim9cmds.c
+++ b/src/vim9cmds.c
@@ -188,10 +188,17 @@ compile_lock_unlock(
size_t len;
char_u *buf;
isntype_T isn = ISN_EXEC;
+ char *cmd = eap->cmdidx == CMD_lockvar ? "lockvar" : "unlockvar";
if (cctx->ctx_skip == SKIP_YES)
return OK;
+ if (*p == NUL)
+ {
+ semsg(_(e_argument_required_for_str), cmd);
+ return FAIL;
+ }
+
// Cannot use :lockvar and :unlockvar on local variables.
if (p[1] != ':')
{
@@ -223,8 +230,6 @@ compile_lock_unlock(
ret = FAIL;
else
{
- char *cmd = eap->cmdidx == CMD_lockvar ? "lockvar" : "unlockvar";
-
if (deep < 0)
vim_snprintf((char *)buf, len, "%s! %s", cmd, p);
else
|
