commit f055d4502365f24de6c0f210a06e2c146a75dc4d
author Bram Moolenaar <Bram@vim.org> Thu Jul 08 20:57:24 2021 +0200
committer Bram Moolenaar <Bram@vim.org> Thu Jul 08 20:57:24 2021 +0200
tree 507f31a2d9b5a7ff03b410f1be7066ca97fdb0d9
parent f32f099761e5ae0603149b305a0086e4f4627d81

patch 8.2.3128: Vim9: uninitialzed list does not get type checked

Problem:    Vim9: uninitialzed list does not get type checked.
Solution:   Set the type when initializing the variable. (closes #8529)

src/testdir/test_vim9_builtin.vim

diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index 8a6af57..dcf6007 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -111,6 +111,13 @@
       l->add(123)
   END
   CheckScriptFailure(lines, 'E1012: Type mismatch; expected string but got number', 3)
+
+  lines =<< trim END
+      vim9script
+      var l: list<string>
+      l->add(123)
+  END
+  CheckScriptFailure(lines, 'E1012: Type mismatch; expected string but got number', 3)
 enddef
 
 def Test_add_blob()