From cca34aa4bef5327eb4025850045c4c980ef4354b Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Thu, 7 May 2020 22:23:58 +0200
Subject: [PATCH] patch 8.2.0715: Vim9: leaking memory

Problem:    Vim9: leaking memory.
Solution:   Free strings after concatenating them.
---
 src/version.c     | 2 ++
 src/vim9compile.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/src/version.c b/src/version.c
index fd59afd1b..743448649 100644
--- a/src/version.c
+++ b/src/version.c
@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    715,
 /**/
     714,
 /**/
diff --git a/src/vim9compile.c b/src/vim9compile.c
index 4ebb88062..3d3b3c30f 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -4229,6 +4229,8 @@ compile_expr5(char_u **arg, cctx_T *cctx)
 	    }
 	    mch_memmove(tv1.vval.v_string, s1, len1);
 	    STRCPY(tv1.vval.v_string + len1, s2);
+	    vim_free(s1);
+	    vim_free(s2);
 	}
 	else
 	{