# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1650292203 -7200
# Node ID c6aadb2c4cd7d068acb0218b2d36e7c55bf5452a
# Parent  0f69ddbdde1febe9e9c24df63f59c7cc542e2a65
patch 8.2.4782: accessing freed memory

Commit: https://github.com/vim/vim/commit/a929c922b1cb7c84ad1b5d1d0fc9a4f7c68ab8e0
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Apr 18 15:21:17 2022 +0100

    patch 8.2.4782: accessing freed memory

    Problem:    Accessing freed memory.
    Solution:   Clear evalarg after checking for trailing characters.
                (issue #10218)

diff --git a/src/testdir/test_lambda.vim b/src/testdir/test_lambda.vim
--- a/src/testdir/test_lambda.vim
+++ b/src/testdir/test_lambda.vim
@@ -1,6 +1,7 @@
 " Test for lambda and closure
 
 source check.vim
+import './vim9.vim' as v9
 
 func Test_lambda_feature()
   call assert_equal(1, has('lambda'))
@@ -54,6 +55,21 @@ func Test_lambda_with_timer()
   call assert_true(s:n > m)
 endfunc
 
+func Test_lambda_vim9cmd_linebreak()
+  CheckFeature timers
+
+  let lines =<< trim END
+      vim9cmd call timer_start(10, (x) => {
+          # comment
+          g:result = 'done'
+         })
+  END
+  call v9.CheckScriptSuccess(lines)
+  sleep 50m
+  call assert_equal('done', g:result)
+  unlet g:result
+endfunc
+
 func Test_lambda_with_partial()
   let l:Cb = function({... -> ['zero', a:1, a:2, a:3]}, ['one', 'two'])
   call assert_equal(['zero', 'one', 'two', 'three'], l:Cb('three'))
diff --git a/src/userfunc.c b/src/userfunc.c
--- a/src/userfunc.c
+++ b/src/userfunc.c
@@ -5529,7 +5529,6 @@ ex_call(exarg_T *eap)
     }
     if (eap->skip)
 	--emsg_skip;
-    clear_evalarg(&evalarg, eap);
 
     // When inside :try we need to check for following "| catch" or "| endtry".
     // Not when there was an error, but do check if an exception was thrown.
@@ -5549,6 +5548,8 @@ ex_call(exarg_T *eap)
 	else
 	    set_nextcmd(eap, arg);
     }
+    // Must be after using "arg", it may point into memory cleared here.
+    clear_evalarg(&evalarg, eap);
 
 end:
     dict_unref(fudi.fd_dict);
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4782,
+/**/
     4781,
 /**/
     4780,