# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1648207807 -3600
# Node ID 22c8cafe8c9cecf629ec79dd06804a1362cdcfe7
# Parent  dd264fa0980c44c7795b8d1c37376965ac3f4d8e
patch 8.2.4622: Vim9: crash with :execute and :finish

Commit: https://github.com/vim/vim/commit/43216611a5accd32a53fe77d4552a36f6ed30c74
Author: Bram Moolenaar <Bram@vim.org>
Date:   Fri Mar 25 11:16:28 2022 +0000

    patch 8.2.4622: Vim9: crash with :execute and :finish

    Problem:    Vim9: Crash with :execute and :finish. (Sergey Vlasov)
    Solution:   Check for NULL. (closes https://github.com/vim/vim/issues/10011)

diff --git a/src/eval.c b/src/eval.c
--- a/src/eval.c
+++ b/src/eval.c
@@ -2144,7 +2144,8 @@ getline_peek_skip_comments(evalarg_T *ev
 	p = skipwhite(next);
 	if (*p != NUL && !vim9_comment_start(p))
 	    return next;
-	(void)eval_next_line(evalarg);
+	if (eval_next_line(evalarg) == NULL)
+	    break;
     }
     return NULL;
 }
@@ -2199,6 +2200,9 @@ eval_next_line(evalarg_T *evalarg)
 							   GETLINE_CONCAT_ALL);
     else
 	line = next_line_from_context(evalarg->eval_cctx, TRUE);
+    if (line == NULL)
+	return NULL;
+
     ++evalarg->eval_break_count;
     if (gap->ga_itemsize > 0 && ga_grow(gap, 1) == OK)
     {
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -1830,6 +1830,24 @@ def Test_execute_cmd_vimscript()
   v9.CheckScriptSuccess(lines)
 enddef
 
+def Test_execute_finish()
+  # the empty lines are relevant here
+  var lines =<< trim END
+      vim9script
+
+      var vname = "g:hello"
+
+      if exists(vname) | finish | endif | execute vname '= "world"'
+
+      assert_equal('world', g:hello)
+
+      if exists(vname) | finish | endif | execute vname '= "world"'
+
+      assert_report('should not be reached')
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
 def Test_echo_cmd()
   echo 'some' # comment
   echon 'thing'
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4622,
+/**/
     4621,
 /**/
     4620,