To: vim_dev@googlegroups.com
Subject: Patch 8.2.5016
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------

Patch 8.2.5016
Problem:    Access before start of text with a put command.
Solution:   Check the length is more than zero.
Files:      src/register.c, src/testdir/test_put.vim


*** ../vim-8.2.5015/src/register.c	2022-05-21 20:16:51.007567185 +0100
--- src/register.c	2022-05-25 15:13:04.635485861 +0100
***************
*** 2219,2227 ****
  	    len = STRLEN(y_array[y_size - 1]);
  	    col = (colnr_T)len - lendiff;
  	    if (col > 1)
! 		curbuf->b_op_end.col = col - 1
! 				- mb_head_off(y_array[y_size - 1],
  						y_array[y_size - 1] + len - 1);
  	    else
  		curbuf->b_op_end.col = 0;
  
--- 2219,2230 ----
  	    len = STRLEN(y_array[y_size - 1]);
  	    col = (colnr_T)len - lendiff;
  	    if (col > 1)
! 	    {
! 		curbuf->b_op_end.col = col - 1;
! 		if (len > 0)
! 		    curbuf->b_op_end.col -= mb_head_off(y_array[y_size - 1],
  						y_array[y_size - 1] + len - 1);
+ 	    }
  	    else
  		curbuf->b_op_end.col = 0;
  
*** ../vim-8.2.5015/src/testdir/test_put.vim	2022-01-01 14:59:39.543684481 +0000
--- src/testdir/test_put.vim	2022-05-25 15:12:33.743501047 +0100
***************
*** 210,214 ****
--- 210,223 ----
    bwipe!
  endfunc
  
+ " this was putting a mark before the start of a line
+ func Test_put_empty_register()
+   new
+   norm yy
+   norm [Pi00ggv)s0
+   sil! norm [P
+   bwipe!
+ endfunc
+ 
  
  " vim: shiftwidth=2 sts=2 expandtab
*** ../vim-8.2.5015/src/version.c	2022-05-25 12:42:03.974091744 +0100
--- src/version.c	2022-05-25 15:02:16.903737478 +0100
***************
*** 736,737 ****
--- 736,739 ----
  {   /* Add new patch number below this line */
+ /**/
+     5016,
  /**/

-- 
TALL KNIGHT OF NI: Ni!
                 "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD

 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///                                                                      \\\
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