commit 9d8d0b5c644ea53364d04403740b3f23e57c1497
author Bram Moolenaar <Bram@vim.org> Fri Apr 24 22:47:31 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Fri Apr 24 22:47:31 2020 +0200
tree 615f9b058821039f8ae1c2cba3f3837500ecc42b
parent 92c461ef1b3b58c7dd4835bc881769f0f84e8ad0

patch 8.2.0633: crash when using null partial in filter()

Problem:    Crash when using null partial in filter().
Solution:   Fix crash.  Add more tests. (Yegappan Lakshmanan, closes #5976)

src/testdir/test_listdict.vim

diff --git a/src/testdir/test_listdict.vim b/src/testdir/test_listdict.vim
index a2cc6b5..87d7a2c 100644
--- a/src/testdir/test_listdict.vim
+++ b/src/testdir/test_listdict.vim
@@ -943,6 +943,7 @@
   call assert_equal(0, uniq(l))
   call assert_fails("let k = [] + l", 'E15:')
   call assert_fails("let k = l + []", 'E15:')
+  call assert_equal(0, len(copy(test_null_list())))
 endfunc
 
 " Test for a null dict
@@ -959,6 +960,7 @@
   call assert_equal('{}', string(d))
   call assert_fails('let x = test_null_dict()[10]')
   call assert_equal({}, {})
+  call assert_equal(0, len(copy(test_null_dict())))
 endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab