changeset 31714:07480c2f5ea8 v9.0.1189

patch 9.0.1189: invalid memory access with folding and using "L" Commit: https://github.com/vim/vim/commit/232bdaaca98c34a99ffadf27bf6ee08be6cc8f6a Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jan 13 14:17:58 2023 +0000 patch 9.0.1189: invalid memory access with folding and using "L" Problem: Invalid memory access with folding and using "L". Solution: Prevent the cursor from moving to line zero.
author Bram Moolenaar <Bram@vim.org>
date Fri, 13 Jan 2023 15:30:04 +0100
parents 6567dd4ba48c
children 17953b02214b
files src/normal.c src/testdir/test_fold.vim src/version.c
diffstat 3 files changed, 12 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/src/normal.c
+++ b/src/normal.c
@@ -3729,7 +3729,8 @@ nv_scroll(cmdarg_T *cap)
 		{
 		    (void)hasFolding(curwin->w_cursor.lnum,
 						&curwin->w_cursor.lnum, NULL);
-		    --curwin->w_cursor.lnum;
+		    if (curwin->w_cursor.lnum > curwin->w_topline)
+			--curwin->w_cursor.lnum;
 		}
 	    }
 	    else
--- a/src/testdir/test_fold.vim
+++ b/src/testdir/test_fold.vim
@@ -1675,4 +1675,12 @@ func Test_sort_closed_fold()
   bwipe!
 endfunc
 
+func Test_indent_with_L_command()
+  " The "L" command moved the cursor to line zero, causing the text saved for
+  " undo to use line number -1, which caused trouble for undo later.
+  new
+  sil! norm 8R
V{zf8=Lu
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1189,
+/**/
     1188,
 /**/
     1187,