# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1605005105 -3600
# Node ID e4fbe8d1bde9a0d0534915d6abc49bcc8867c3d8
# Parent  4d9b91d6e29af9660fb5afa7ecf110d440298141
patch 8.2.1971: memory leak when map() fails

Commit: https://github.com/vim/vim/commit/c56936e2ba4fd219f56aab616fcb283132455697
Author: Bram Moolenaar <Bram@vim.org>
Date:   Tue Nov 10 11:43:56 2020 +0100

    patch 8.2.1971: memory leak when map() fails

    Problem:    Memory leak when map() fails.
    Solution:   Clear the typval.

diff --git a/src/list.c b/src/list.c
--- a/src/list.c
+++ b/src/list.c
@@ -2185,8 +2185,13 @@ filter_map(typval_T *argvars, typval_T *
 		nli = li->li_next;
 		set_vim_var_nr(VV_KEY, idx);
 		if (filter_map_one(&li->li_tv, expr, filtermap,
-					     &newtv, &rem) == FAIL || did_emsg)
+							 &newtv, &rem) == FAIL)
 		    break;
+		if (did_emsg)
+		{
+		    clear_tv(&newtv);
+		    break;
+		}
 		if (filtermap == FILTERMAP_MAP)
 		{
 		    // map(): replace the list item value
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 */
 /**/
+    1971,
+/**/
     1970,
 /**/
     1969,