From af8af8bfac5792fa64efbc524032d568cc7754f7 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Mon, 4 Jan 2016 22:05:24 +0100
Subject: patch 7.4.1051 Problem:    Segfault when unletting "count". Solution:
   Check for readonly and locked first. (Dominique Pelle)             Add a
 test.

---
 src/testdir/test_unlet.vim | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 src/testdir/test_unlet.vim

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

diff --git a/src/testdir/test_unlet.vim b/src/testdir/test_unlet.vim
new file mode 100644
index 000000000..f6705997a
--- /dev/null
+++ b/src/testdir/test_unlet.vim
@@ -0,0 +1,26 @@
+" Tests for :unlet
+
+func Test_read_only()
+  try
+    " this caused a crash
+    unlet count
+  catch
+    call assert_true(v:exception =~ ':E795:')
+  endtry
+endfunc
+
+func Test_existing()
+  let does_exist = 1
+  call assert_true(exists('does_exist'))
+  unlet does_exist
+  call assert_false(exists('does_exist'))
+endfunc
+
+func Test_not_existing()
+  unlet! does_not_exist
+  try
+    unlet does_not_exist
+  catch
+    call assert_true(v:exception =~ ':E108:')
+  endtry
+endfunc
-- 
cgit v1.2.1