patch 8.2.0097: crash with autocommand and spellfile
Problem: Crash with autocommand and spellfile. (Tim Pope)
Solution: Do not pop exestack when not pushed. (closes #5450)
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index ab02402..23deec6 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -2335,3 +2335,25 @@
call delete('Xtest')
call delete('Xtest2')
endfunc
+
+func Test_FileType_spell()
+ if !isdirectory('/tmp')
+ throw "Skipped: requires /tmp directory"
+ endif
+
+ " this was crashing with an invalid free()
+ setglobal spellfile=/tmp/en.utf-8.add
+ augroup crash
+ autocmd!
+ autocmd BufNewFile,BufReadPost crashfile setf somefiletype
+ autocmd BufNewFile,BufReadPost crashfile set ft=anotherfiletype
+ autocmd FileType anotherfiletype setlocal spell
+ augroup END
+ func! NoCrash() abort
+ edit /tmp/crashfile
+ endfunc
+ call NoCrash()
+
+ au! crash
+ setglobal spellfile=
+endfunc