From b313109a25ac5d910b109410ed34324785bf3142 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Mon, 13 Nov 2023 06:49:23 +0800
Subject: [PATCH] vim-patch:8.2.3116: Vim9: crash when debugging a function
 with line continuation

Problem:    Vim9: crash when debugging a function with line continuation.
Solution:   Check for a NULL pointer. (closes vim/vim#8521)

https://github.com/vim/vim/commit/303215d60cece0462f040035502b5bc95373bd6e

Co-authored-by: Bram Moolenaar <Bram@vim.org>
---
 test/old/testdir/test_debugger.vim | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/test/old/testdir/test_debugger.vim b/test/old/testdir/test_debugger.vim
index ae7672bffa..4cf25b9521 100644
--- a/test/old/testdir/test_debugger.vim
+++ b/test/old/testdir/test_debugger.vim
@@ -1050,6 +1050,7 @@ func Test_debug_def_function()
            eval 1
          enddef
     enddef
+
     def g:FuncComment()
       # comment
       echo "first"
@@ -1057,6 +1058,7 @@ func Test_debug_def_function()
       # comment
       echo "second"
     enddef
+
     def g:FuncForLoop()
       eval 1
       for i in [11, 22, 33]
@@ -1064,6 +1066,11 @@ func Test_debug_def_function()
       endfor
       echo "done"
     enddef
+
+    def g:FuncWithSplitLine()
+        eval 1
+           | eval 2
+    enddef
   END
   call writefile(file, 'Xtest.vim')
 
@@ -1119,6 +1126,12 @@ func Test_debug_def_function()
   call RunDbgCmd(buf, 'next', ['function FuncForLoop', 'line 2: for i in [11, 22, 33]'])
   call RunDbgCmd(buf, 'echo i', ['22'])
 
+  call RunDbgCmd(buf, 'breakdel *')
+  call RunDbgCmd(buf, 'cont')
+
+  call RunDbgCmd(buf, ':breakadd func FuncWithSplitLine')
+  call RunDbgCmd(buf, ':call FuncWithSplitLine()', ['function FuncWithSplitLine', 'line 1: eval 1 | eval 2'])
+
   call RunDbgCmd(buf, 'cont')
   call StopVimInTerminal(buf)
   call delete('Xtest.vim')