To: vim_dev@googlegroups.com
Subject: Patch 8.2.3509
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------

Patch 8.2.3509
Problem:    Undo file is not synced. (Sami Farin)
Solution:   Sync the undo file if 'fsync' is set. (Christian Brabandt,
            closes #8879, closes #8920)
Files:      runtime/doc/options.txt, src/undo.c


*** ../vim-8.2.3508/runtime/doc/options.txt	2021-09-10 15:58:24.442743070 +0100
--- runtime/doc/options.txt	2021-10-14 17:37:39.970189294 +0100
***************
*** 3599,3606 ****
  	systems without an fsync() implementation, this variable is always
  	off.
  	Also see 'swapsync' for controlling fsync() on swap files.
! 	'fsync' also applies to |writefile()|, unless a flag is used to
! 	overrule it.
  	This option cannot be set from a |modeline| or in the |sandbox|, for
  	security reasons.
  
--- 3610,3617 ----
  	systems without an fsync() implementation, this variable is always
  	off.
  	Also see 'swapsync' for controlling fsync() on swap files.
! 	'fsync' also applies to |writefile()| (unless a flag is used to
! 	overrule it) and when writing undo files (see |undo-persistence|).
  	This option cannot be set from a |modeline| or in the |sandbox|, for
  	security reasons.
  
*** ../vim-8.2.3508/src/undo.c	2021-07-27 21:00:39.757712371 +0100
--- src/undo.c	2021-10-14 17:46:13.658523779 +0100
***************
*** 1786,1791 ****
--- 1786,1796 ----
  	write_ok = FALSE;
  #endif
  
+ #if defined(UNIX) && defined(HAVE_FSYNC)
+     if (p_fs && fflush(fp) == 0 && vim_fsync(fd) != 0)
+ 	write_ok = FALSE;
+ #endif
+ 
  write_error:
      fclose(fp);
      if (!write_ok)
*** ../vim-8.2.3508/src/version.c	2021-10-14 16:53:37.417505210 +0100
--- src/version.c	2021-10-14 17:40:33.733106143 +0100
***************
*** 759,760 ****
--- 759,762 ----
  {   /* Add new patch number below this line */
+ /**/
+     3509,
  /**/

-- 
Although the scythe isn't pre-eminent among the weapons of war, anyone who
has been on the wrong end of, say, a peasants' revolt will know that in
skilled hands it is fearsome.
					-- (Terry Pratchett, Mort)

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