commit 51f0bfb88a3554ca2dde777d78a59880d1ee37a8
author Bram Moolenaar <Bram@vim.org> Tue May 17 20:11:02 2022 +0100
committer Bram Moolenaar <Bram@vim.org> Tue May 17 20:11:02 2022 +0100
tree 5671a003b9dac08a40e60d042ba2903a0251dfec
parent 4748c4bd64610cf943a431d215bb1aad51f8d0b4

patch 8.2.4975: recursive command line loop may cause a crash

Problem:    Recursive command line loop may cause a crash.
Solution:   Limit recursion of getcmdline().

src/testdir/test_cmdline.vim

diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index e944f8d..cc7fe54 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -3392,4 +3392,16 @@
   call feedkeys(":let a\<C-R>=Check_completion()\<CR>\<Esc>", "xt")
 endfunc
 
+func Test_recursive_register()
+  let @= = ''
+  silent! ?e/
+  let caught = 'no'
+  try
+    normal // 
+  catch /E169:/
+    let caught = 'yes'
+  endtry
+  call assert_equal('yes', caught)
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab