patch 9.0.0875: using freed memory when executing delfunc at more prompt
Problem: Using freed memory when executing delfunc at the more prompt.
Solution: Check function list not changed in another place. (closes #11437)
diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index d0508ce..cb07221 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -3026,4 +3026,31 @@
bwipe!
endfunc
+func Test_delfunc_while_listing()
+ CheckRunVimInTerminal
+
+ let lines =<< trim END
+ set nocompatible
+ for i in range(1, 999)
+ exe 'func ' .. 'MyFunc' .. i .. '()'
+ endfunc
+ endfor
+ au CmdlineLeave : call timer_start(0, {-> execute('delfunc MyFunc622')})
+ END
+ call writefile(lines, 'Xfunctionclear', 'D')
+ let buf = RunVimInTerminal('-S Xfunctionclear', {'rows': 12})
+
+ " This was using freed memory. The height of the terminal must be so that
+ " the next function to be listed with "j" is the one that is deleted in the
+ " timer callback, tricky!
+ call term_sendkeys(buf, ":func /MyFunc\<CR>")
+ call TermWait(buf, 50)
+ call term_sendkeys(buf, "j")
+ call TermWait(buf, 50)
+ call term_sendkeys(buf, "\<CR>")
+
+ call StopVimInTerminal(buf)
+endfunc
+
+
" vim: shiftwidth=2 sts=2 expandtab