commit c1f0066b642fb62e37b300033223ff3ee4aafcd6
author Bram Moolenaar <Bram@vim.org> Sat Oct 03 13:41:53 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Sat Oct 03 13:41:53 2020 +0200
tree 013650efa41b9378bdc9166353aa994b37703c3a
parent 016faaa1b2fe242022725b29e1353c42105d045c

patch 8.2.1789: Vim9: crash with invalid list constant

Problem:    Vim9: crash with invalid list constant. (Dhiraj Mishra)
Solution:   Return FAIL when compiling the list fails. (closes #7066)

src/testdir/test_vim9_expr.vim

diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index 0a0bcb4..fa33089 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -1538,6 +1538,16 @@
   CheckDefExecFailure(["var l: list<number> = ['x', 234]"], 'E1012:', 1)
   CheckDefExecFailure(["var l: list<string> = [234, 'x']"], 'E1012:', 1)
   CheckDefExecFailure(["var l: list<string> = ['x', 123]"], 'E1012:', 1)
+
+  var lines =<< trim END
+      vim9script
+      var datalist: list<string>
+      def Main()
+        datalist += ['x'.
+      enddef
+      Main()
+  END
+  CheckScriptFailure(lines, 'E1127:')
 enddef
 
 def Test_expr7_list_vim9script()