patch 8.2.2463: using :arglocal in an autocommand may use freed memory
Problem: Using :arglocal in an autocommand may use freed memory.
(houyunsong)
Solution: Check if the arglist is locked.
diff --git a/src/arglist.c b/src/arglist.c
index 503cbd9..79628fd 100644
--- a/src/arglist.c
+++ b/src/arglist.c
@@ -557,6 +557,8 @@
if (eap->cmdidx != CMD_args)
{
+ if (check_arglist_locked() == FAIL)
+ return;
alist_unlink(ALIST(curwin));
if (eap->cmdidx == CMD_argglobal)
ALIST(curwin) = &global_alist;
@@ -566,6 +568,8 @@
if (*eap->arg != NUL)
{
+ if (check_arglist_locked() == FAIL)
+ return;
// ":args file ..": define new argument list, handle like ":next"
// Also for ":argslocal file .." and ":argsglobal file ..".
ex_next(eap);
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index dab6991..71f8d2d 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -2717,4 +2717,13 @@
%bwipe!
endfunc
+" This was using freed memory.
+func Test_BufNew_arglocal()
+ arglocal
+ au BufNew * arglocal
+ call assert_fails('drop xx', 'E1156:')
+
+ au! BufNew
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index a7288f3..53ed13c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 2463,
+/**/
2462,
/**/
2461,