From 027c4ab4d2e3ff031b98e0fb648f5acbea180293 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Sun, 21 Feb 2021 16:20:18 +0100
Subject: patch 8.2.2537: Vim9: crash when map() fails

Problem:    Vim9: crash when map() fails.
Solution:   Clear typval before using it. (closes #7884)
---
 src/testdir/test_vim9_builtin.vim | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'src/testdir/test_vim9_builtin.vim')

diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index cb36990657..3ee8a620f6 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -690,6 +690,27 @@ def Test_maparg_mapset()
   nunmap <F3>
 enddef
 
+def Test_map_failure()
+  CheckFeature job
+
+  var lines =<< trim END
+      vim9script
+      writefile([], 'Xtmpfile')
+      silent e Xtmpfile
+      var d = {[bufnr('%')]: {a: 0}}
+      au BufReadPost * Func()
+      def Func()
+          if d->has_key('')
+          endif
+          eval d[expand('<abuf>')]->mapnew((_, v: dict<job>) => 0)
+      enddef
+      e
+  END
+  CheckScriptFailure(lines, 'E1013:')
+  au! BufReadPost
+  delete('Xtmpfile')
+enddef
+
 def Test_max()
   g:flag = true
   var l1: list<number> = g:flag
-- 
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