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vim-patch:8.0.1403: using freed buffer in grep command

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Problem:    Using freed buffer in grep command. (gy741, Dominique Pelle)
Solution:   Lock the dummy buffer to avoid autocommands wiping it out.

4fb921e388
This commit is contained in:
Justin M. Keyes 2018-02-02 03:04:09 +01:00
parent 5ae90c84ea
commit 6116af02ef
2 changed files with 10 additions and 17 deletions
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13
src/nvim/quickfix.c
View File

@ -3909,6 +3909,7 @@ load_dummy_buffer (
bufref_T newbuf_to_wipe;
int failed = true;
aco_save_T aco;
int readfile_result;
// Allocate a buffer without putting it in the buffer list.
newbuf = buflist_new(NULL, NULL, (linenr_T)1, BLN_DUMMY);
@ -3922,7 +3923,9 @@ load_dummy_buffer (
/* need to open the memfile before putting the buffer in a window */
if (ml_open(newbuf) == OK) {
/* set curwin/curbuf to buf and save a few things */
// Make sure this buffer isn't wiped out by auto commands.
newbuf->b_locked++;
// set curwin/curbuf to buf and save a few things
aucmd_prepbuf(&aco, newbuf);
/* Need to set the filename for autocommands. */
@ -3936,9 +3939,11 @@ load_dummy_buffer (
curbuf->b_flags &= ~BF_DUMMY;
newbuf_to_wipe.br_buf = NULL;
if (readfile(fname, NULL,
(linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM,
NULL, READ_NEW | READ_DUMMY) == OK
readfile_result = readfile(fname, NULL, (linenr_T)0, (linenr_T)0,
(linenr_T)MAXLNUM, NULL,
READ_NEW | READ_DUMMY);
newbuf->b_locked--;
if (readfile_result == OK
&& !got_int
&& !(curbuf->b_flags & BF_NEW)) {
failed = FALSE;

14
src/nvim/testdir/test_autocmd.vim
View File

@ -797,18 +797,6 @@ func Test_QuitPre()
endfunc
func Test_Cmdline()
au! CmdlineChanged : let g:text = getcmdline()
let g:text = 0
call feedkeys(":echom 'hello'\<CR>", 'xt')
call assert_equal("echom 'hello'", g:text)
au! CmdlineChanged
au! CmdlineChanged : let g:entered = expand('<afile>')
let g:entered = 0
call feedkeys(":echom 'hello'\<CR>", 'xt')
call assert_equal(':', g:entered)
au! CmdlineChanged
au! CmdlineEnter : let g:entered = expand('<afile>')
au! CmdlineLeave : let g:left = expand('<afile>')
let g:entered = 0
@ -983,7 +971,7 @@ func Test_Cmd_Autocmds()
au BufWriteCmd XtestE call extend(g:lines, getline(0, '$'))
wall " will write other window to 'lines'
call assert_equal(4, len(g:lines), g:lines)
call assert_equal('asdf', g:lines[2])
call assert_equal("\tasdf", g:lines[2])
au! BufReadCmd
au! BufWriteCmd