commit 1e021e63c565bbb30783a557b4e883cc27f56403
author Bram Moolenaar <Bram@vim.org> Fri Oct 16 20:25:23 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Fri Oct 16 20:25:23 2020 +0200
tree 0e0b4b4b39e9cd3bf76a91c86e3c5f9259fbea79
parent 7a66a17190f2f64688a697ea29d58388612122ce

patch 8.2.1854: Vim9: crash when throwing exception for NULL string

Problem:    Vim9: crash when throwing exception for NULL string. (Dhiraj
            Mishra)
Solution:   Handle NULL string like empty string. (closes #7139)

src/testdir/test_vim9_script.vim

diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 43c66cc..9a2a481 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -617,6 +617,21 @@
       endtry
   END
   CheckScriptSuccess(lines)
+
+  lines =<< trim END
+    vim9script
+    def Func()
+      throw @r
+    enddef
+    var result = ''
+    try
+      Func()
+    catch /E1129:/
+      result = 'caught'
+    endtry
+    assert_equal('caught', result)
+  END
+  CheckScriptSuccess(lines)
 enddef
 
 def Test_error_in_nested_function()