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vim-patch:8.2.2472: crash when using command line window in an autocommand

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Problem:    Crash when using command line window in an autocommand.
            (houyunsong)
Solution:   Save and restore au_new_curbuf.
aad5f9d79a

Nvim has removed :open, so use :edit in the test instead.
This commit is contained in:
zeertzjq
2022-04-20 09:18:39 +08:00
parent 9b10b4cc64
commit fa15f2f938
2 changed files with 25 additions and 4 deletions
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8
src/nvim/ex_cmds.c
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@@ -2497,16 +2497,19 @@ int do_ecmd(int fnum, char_u *ffname, char_u *sfname, exarg_T *eap, linenr_T new
if (buf->b_fname != NULL) {
new_name = vim_strsave(buf->b_fname);
}
const bufref_T save_au_new_curbuf = au_new_curbuf;
set_bufref(&au_new_curbuf, buf);
apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, false, curbuf);
cmdwin_type = save_cmdwin_type;
if (!bufref_valid(&au_new_curbuf)) {
// New buffer has been deleted.
delbuf_msg(new_name); // Frees new_name.
au_new_curbuf = save_au_new_curbuf;
goto theend;
}
if (aborting()) { // autocmds may abort script processing
xfree(new_name);
au_new_curbuf = save_au_new_curbuf;
goto theend;
}
if (buf == curbuf) { // already in new buffer
@@ -2540,12 +2543,14 @@ int do_ecmd(int fnum, char_u *ffname, char_u *sfname, exarg_T *eap, linenr_T new
// autocmds may abort script processing
if (aborting() && curwin->w_buffer != NULL) {
xfree(new_name);
au_new_curbuf = save_au_new_curbuf;
goto theend;
}
// Be careful again, like above.
if (!bufref_valid(&au_new_curbuf)) {
// New buffer has been deleted.
delbuf_msg(new_name); // Frees new_name.
au_new_curbuf = save_au_new_curbuf;
goto theend;
}
if (buf == curbuf) { // already in new buffer
@@ -2585,8 +2590,7 @@ int do_ecmd(int fnum, char_u *ffname, char_u *sfname, exarg_T *eap, linenr_T new
did_get_winopts = true;
}
xfree(new_name);
au_new_curbuf.br_buf = NULL;
au_new_curbuf.br_buf_free_count = 0;
au_new_curbuf = save_au_new_curbuf;
}
curwin->w_pcmark.lnum = 1;