Patch 8.2.2176

[Bram Moolenaar]

Patch 8.2.2176
Problem: Crash with a sequence of fold commands.
Solution: Bail out when there are no folds at all. Add a test (Dominique
Pellé) (closes #7515)
Files: src/fold.c, src/testdir/test_fold.vim


*** ../vim-8.2.2175/src/fold.c 2020-11-10 18:23:47.870506514 +0100
--- src/fold.c 2020-12-21 13:59:35.152948911 +0100
***************
*** 916,922 ****
{
if (!foldFind(gap, curwin->w_cursor.lnum - lnum_off, &fp))
{
! if (!updown)
break;

// When moving up, consider a fold above the cursor; when
--- 916,922 ----
{
if (!foldFind(gap, curwin->w_cursor.lnum - lnum_off, &fp))
{
! if (!updown || gap->ga_len == 0)
break;

// When moving up, consider a fold above the cursor; when
*** ../vim-8.2.2175/src/testdir/test_fold.vim 2020-11-27 19:13:24.186184976 +0100
--- src/testdir/test_fold.vim 2020-12-21 13:53:42.662085303 +0100
***************
*** 852,855 ****
--- 852,862 ----
bwipe!
endfunc

+ " this was crashing
+ func Test_fold_create_delete()
+ new
+ norm zFzFzdzj
+ bwipe!
+ endfunc
+
" vim: shiftwidth=2 sts=2 expandtab
*** ../vim-8.2.2175/src/version.c 2020-12-21 13:37:13.513191440 +0100
--- src/version.c 2020-12-21 13:54:45.345883759 +0100
***************
*** 752,753 ****
--- 752,755 ----
{ /* Add new patch number below this line */
+ /**/
+ 2176,
/**/

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