Patch 7.4.1592
Problem:    Quickfix code using memory after being freed. (Dominique Pelle)
Solution:   Detect that the window was closed. (Hirohito Higashi)
Files:      src/quickfix.c, src/testdir/test_quickfix.vim


*** ../vim-7.4.1591/src/quickfix.c      2016-03-18 21:00:47.876721205 +0100
--- src/quickfix.c      2016-03-19 13:30:43.292493328 +0100
***************
*** 1795,1802 ****
--- 1795,1813 ----
                                           oldwin == curwin ? curwin : NULL);
        }
        else
+       {
            ok = buflist_getfile(qf_ptr->qf_fnum,
                            (linenr_T)1, GETF_SETMARK | GETF_SWITCH, forceit);
+           if (qi != &ql_info && !win_valid(oldwin))
+           {
+               EMSG(_("E924: Current window was closed"));
+               ok = FALSE;
+               qi = NULL;
+               qf_ptr = NULL;
+               opened_window = FALSE;
+           }
+       }
+ 
      }
  
      if (ok == OK)
***************
*** 1899,1905 ****
        if (opened_window)
            win_close(curwin, TRUE);    /* Close opened window */
  #endif
!       if (qf_ptr->qf_fnum != 0)
        {
            /*
             * Couldn't open file, so put index back where it was.  This could
--- 1910,1916 ----
        if (opened_window)
            win_close(curwin, TRUE);    /* Close opened window */
  #endif
!       if (qf_ptr != NULL && qf_ptr->qf_fnum != 0)
        {
            /*
             * Couldn't open file, so put index back where it was.  This could
***************
*** 1913,1920 ****
        }
      }
  theend:
!     qi->qf_lists[qi->qf_curlist].qf_ptr = qf_ptr;
!     qi->qf_lists[qi->qf_curlist].qf_index = qf_index;
  #ifdef FEAT_WINDOWS
      if (p_swb != old_swb && opened_window)
      {
--- 1924,1934 ----
        }
      }
  theend:
!     if (qi != NULL)
!     {
!       qi->qf_lists[qi->qf_curlist].qf_ptr = qf_ptr;
!       qi->qf_lists[qi->qf_curlist].qf_index = qf_index;
!     }
  #ifdef FEAT_WINDOWS
      if (p_swb != old_swb && opened_window)
      {
*** ../vim-7.4.1591/src/testdir/test_quickfix.vim       2016-03-18 
21:00:47.876721205 +0100
--- src/testdir/test_quickfix.vim       2016-03-19 13:24:42.496268175 +0100
***************
*** 495,497 ****
--- 495,516 ----
  
      augroup! testgroup
  endfunction
+ 
+ function Test_locationlist_curwin_was_closed()
+     augroup testgroup
+       au!
+       autocmd BufReadCmd t call R(expand("<amatch>"))
+     augroup END
+ 
+     function R(n)
+       quit
+     endfunc
+ 
+     new
+     let q = []
+     call add(q, {'filename': 't' })
+     call setloclist(0, q)
+     call assert_fails('lrewind', 'E924:')
+ 
+     augroup! testgroup
+ endfunction
*** ../vim-7.4.1591/src/version.c       2016-03-18 21:00:47.876721205 +0100
--- src/version.c       2016-03-19 13:32:03.315656249 +0100
***************
*** 750,751 ****
--- 750,753 ----
  {   /* Add new patch number below this line */
+ /**/
+     1592,
  /**/

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