# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1644953403 -3600
# Node ID 51a28e8be7c3f560972b4eb7e3cb5c9f182175ec
# Parent  06f4629cb1538652d230a2ebc608c2de4cdd13c9
patch 8.2.4393: possible number overflow with nested folds

Commit: https://github.com/vim/vim/commit/6b43471da4516e8f6c17e5dc2eccbb9d0ba2e0a4
Author: Bram Moolenaar <Bram@vim.org>
Date:   Tue Feb 15 19:15:22 2022 +0000

    patch 8.2.4393: possible number overflow with nested folds

    Problem:    Possible number overflow with nested folds.
    Solution:   Avoid a negative line number.

diff --git a/src/fold.c b/src/fold.c
--- a/src/fold.c
+++ b/src/fold.c
@@ -1604,7 +1604,7 @@ foldMarkAdjustRecurse(
 		    if (amount == MAXLNUM)
 		    {
 			foldMarkAdjustRecurse(&fp->fd_nested,
-				  line1 - fp->fd_top,
+				  0,
 				  line2 - fp->fd_top,
 				  amount,
 				  amount_after + (fp->fd_top - top));
@@ -1614,7 +1614,7 @@ foldMarkAdjustRecurse(
 		    else
 		    {
 			foldMarkAdjustRecurse(&fp->fd_nested,
-				  line1 - fp->fd_top,
+				  0,
 				  line2 - fp->fd_top,
 				  amount,
 				  amount_after - amount);
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 */
 /**/
+    4393,
+/**/
     4392,
 /**/
     4391,