# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1618859703 -7200
# Node ID cca0a1b4e8789e69abdc94e6fac6d30e3f88b8b8
# Parent  a03ddeba725249f0eb7cbf75075690e8739a6a7a
patch 8.2.2786: Vim9: memory leak when using :s with expression

Commit: https://github.com/vim/vim/commit/4f2df37a0d297a0f40ff15f8ce31285c7b529bcd
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Apr 19 21:06:31 2021 +0200

    patch 8.2.2786: Vim9: memory leak when using :s with expression

    Problem:    Vim9: memory leak when using :s with expression.
    Solution:   Clean up the instruction list.

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 */
 /**/
+    2786,
+/**/
     2785,
 /**/
     2784,
diff --git a/src/vim9compile.c b/src/vim9compile.c
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -9416,8 +9416,15 @@ delete_instr(isn_T *isn)
 	    break;
 
 	case ISN_SUBSTITUTE:
-	    vim_free(isn->isn_arg.subs.subs_cmd);
-	    vim_free(isn->isn_arg.subs.subs_instr);
+	    {
+		int	idx;
+		isn_T	*list = isn->isn_arg.subs.subs_instr;
+
+		vim_free(isn->isn_arg.subs.subs_cmd);
+		for (idx = 0; list[idx].isn_type != ISN_FINISH; ++idx)
+		    delete_instr(list + idx);
+		vim_free(list);
+	    }
 	    break;
 
 	case ISN_LOADS: