commit 4c8e8c6e19b75d632b042aa0ba0a2ab769b2162e
author Bram Moolenaar <Bram@vim.org> Wed May 26 19:49:09 2021 +0200
committer Bram Moolenaar <Bram@vim.org> Wed May 26 19:49:09 2021 +0200
tree 872b4fd5b1f177b09972f344cfc1f20ff3246736
parent 34fcb697240c1bc9e69417ed75db3b1a83479724

patch 8.2.2887: crash when passing null string to fullcommand()

Problem:    Crash when passing null string to fullcommand().
Solution:   Check for NULL pointer. (closes #8256)

src/testdir/test_cmdline.vim

diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index d167d4c..c3a638b 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -475,6 +475,7 @@
   for [in, want] in items(tests)
     call assert_equal(want, fullcommand(in))
   endfor
+  call assert_equal('', fullcommand(test_null_string()))
 
   call assert_equal('syntax', 'syn'->fullcommand())
 endfunc