vim/7.4.797

To: vim_dev@googlegroups.com
Subject: Patch 7.4.797
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------

Patch 7.4.797
Problem:    Crash when using more lines for the command line than
            'maxcombine'.
Solution:   Use the correct array index.  Also, do not try redrawing when
            exiting.  And use screen_Columns instead of Columns.
Files:      src/screen.c


*** ../vim-7.4.796/src/screen.c	2015-07-21 15:48:13.589517950 +0200
--- src/screen.c	2015-07-25 22:46:44.028355647 +0200
***************
*** 279,284 ****
--- 279,285 ----
      int		type;
  {
      int		rows;
+     int		cols = screen_Columns;
      int		r;
      int		ret = 0;
      schar_T	*screenline;	/* copy from ScreenLines[] */
***************
*** 291,318 ****
  #endif
  
      redraw_later(type);
!     if (msg_scrolled || (State != NORMAL && State != NORMAL_BUSY))
  	return ret;
  
      /* Allocate space to save the text displayed in the command line area. */
!     rows = Rows - cmdline_row;
      screenline = (schar_T *)lalloc(
! 			   (long_u)(rows * Columns * sizeof(schar_T)), FALSE);
      screenattr = (sattr_T *)lalloc(
! 			   (long_u)(rows * Columns * sizeof(sattr_T)), FALSE);
      if (screenline == NULL || screenattr == NULL)
  	ret = 2;
  #ifdef FEAT_MBYTE
      if (enc_utf8)
      {
  	screenlineUC = (u8char_T *)lalloc(
! 			  (long_u)(rows * Columns * sizeof(u8char_T)), FALSE);
  	if (screenlineUC == NULL)
  	    ret = 2;
  	for (i = 0; i < p_mco; ++i)
  	{
  	    screenlineC[i] = (u8char_T *)lalloc(
! 			  (long_u)(rows * Columns * sizeof(u8char_T)), FALSE);
  	    if (screenlineC[i] == NULL)
  		ret = 2;
  	}
--- 292,319 ----
  #endif
  
      redraw_later(type);
!     if (msg_scrolled || (State != NORMAL && State != NORMAL_BUSY) || exiting)
  	return ret;
  
      /* Allocate space to save the text displayed in the command line area. */
!     rows = screen_Rows - cmdline_row;
      screenline = (schar_T *)lalloc(
! 			   (long_u)(rows * cols * sizeof(schar_T)), FALSE);
      screenattr = (sattr_T *)lalloc(
! 			   (long_u)(rows * cols * sizeof(sattr_T)), FALSE);
      if (screenline == NULL || screenattr == NULL)
  	ret = 2;
  #ifdef FEAT_MBYTE
      if (enc_utf8)
      {
  	screenlineUC = (u8char_T *)lalloc(
! 			  (long_u)(rows * cols * sizeof(u8char_T)), FALSE);
  	if (screenlineUC == NULL)
  	    ret = 2;
  	for (i = 0; i < p_mco; ++i)
  	{
  	    screenlineC[i] = (u8char_T *)lalloc(
! 			  (long_u)(rows * cols * sizeof(u8char_T)), FALSE);
  	    if (screenlineC[i] == NULL)
  		ret = 2;
  	}
***************
*** 320,326 ****
      if (enc_dbcs == DBCS_JPNU)
      {
  	screenline2 = (schar_T *)lalloc(
! 			   (long_u)(rows * Columns * sizeof(schar_T)), FALSE);
  	if (screenline2 == NULL)
  	    ret = 2;
      }
--- 321,327 ----
      if (enc_dbcs == DBCS_JPNU)
      {
  	screenline2 = (schar_T *)lalloc(
! 			   (long_u)(rows * cols * sizeof(schar_T)), FALSE);
  	if (screenline2 == NULL)
  	    ret = 2;
      }
***************
*** 331,357 ****
  	/* Save the text displayed in the command line area. */
  	for (r = 0; r < rows; ++r)
  	{
! 	    mch_memmove(screenline + r * Columns,
  			ScreenLines + LineOffset[cmdline_row + r],
! 			(size_t)Columns * sizeof(schar_T));
! 	    mch_memmove(screenattr + r * Columns,
  			ScreenAttrs + LineOffset[cmdline_row + r],
! 			(size_t)Columns * sizeof(sattr_T));
  #ifdef FEAT_MBYTE
  	    if (enc_utf8)
  	    {
! 		mch_memmove(screenlineUC + r * Columns,
  			    ScreenLinesUC + LineOffset[cmdline_row + r],
! 			    (size_t)Columns * sizeof(u8char_T));
  		for (i = 0; i < p_mco; ++i)
! 		    mch_memmove(screenlineC[i] + r * Columns,
! 				ScreenLinesC[r] + LineOffset[cmdline_row + r],
! 				(size_t)Columns * sizeof(u8char_T));
  	    }
  	    if (enc_dbcs == DBCS_JPNU)
! 		mch_memmove(screenline2 + r * Columns,
  			    ScreenLines2 + LineOffset[cmdline_row + r],
! 			    (size_t)Columns * sizeof(schar_T));
  #endif
  	}
  
--- 332,358 ----
  	/* Save the text displayed in the command line area. */
  	for (r = 0; r < rows; ++r)
  	{
! 	    mch_memmove(screenline + r * cols,
  			ScreenLines + LineOffset[cmdline_row + r],
! 			(size_t)cols * sizeof(schar_T));
! 	    mch_memmove(screenattr + r * cols,
  			ScreenAttrs + LineOffset[cmdline_row + r],
! 			(size_t)cols * sizeof(sattr_T));
  #ifdef FEAT_MBYTE
  	    if (enc_utf8)
  	    {
! 		mch_memmove(screenlineUC + r * cols,
  			    ScreenLinesUC + LineOffset[cmdline_row + r],
! 			    (size_t)cols * sizeof(u8char_T));
  		for (i = 0; i < p_mco; ++i)
! 		    mch_memmove(screenlineC[i] + r * cols,
! 				ScreenLinesC[i] + LineOffset[cmdline_row + r],
! 				(size_t)cols * sizeof(u8char_T));
  	    }
  	    if (enc_dbcs == DBCS_JPNU)
! 		mch_memmove(screenline2 + r * cols,
  			    ScreenLines2 + LineOffset[cmdline_row + r],
! 			    (size_t)cols * sizeof(schar_T));
  #endif
  	}
  
***************
*** 366,393 ****
  	    for (r = 0; r < rows; ++r)
  	    {
  		mch_memmove(current_ScreenLine,
! 			    screenline + r * Columns,
! 			    (size_t)Columns * sizeof(schar_T));
  		mch_memmove(ScreenAttrs + off,
! 			    screenattr + r * Columns,
! 			    (size_t)Columns * sizeof(sattr_T));
  #ifdef FEAT_MBYTE
  		if (enc_utf8)
  		{
  		    mch_memmove(ScreenLinesUC + off,
! 				screenlineUC + r * Columns,
! 				(size_t)Columns * sizeof(u8char_T));
  		    for (i = 0; i < p_mco; ++i)
  			mch_memmove(ScreenLinesC[i] + off,
! 				    screenlineC[i] + r * Columns,
! 				    (size_t)Columns * sizeof(u8char_T));
  		}
  		if (enc_dbcs == DBCS_JPNU)
  		    mch_memmove(ScreenLines2 + off,
! 				screenline2 + r * Columns,
! 				(size_t)Columns * sizeof(schar_T));
  #endif
! 		SCREEN_LINE(cmdline_row + r, 0, Columns, Columns, FALSE);
  	    }
  	    ret = 4;
  	}
--- 367,394 ----
  	    for (r = 0; r < rows; ++r)
  	    {
  		mch_memmove(current_ScreenLine,
! 			    screenline + r * cols,
! 			    (size_t)cols * sizeof(schar_T));
  		mch_memmove(ScreenAttrs + off,
! 			    screenattr + r * cols,
! 			    (size_t)cols * sizeof(sattr_T));
  #ifdef FEAT_MBYTE
  		if (enc_utf8)
  		{
  		    mch_memmove(ScreenLinesUC + off,
! 				screenlineUC + r * cols,
! 				(size_t)cols * sizeof(u8char_T));
  		    for (i = 0; i < p_mco; ++i)
  			mch_memmove(ScreenLinesC[i] + off,
! 				    screenlineC[i] + r * cols,
! 				    (size_t)cols * sizeof(u8char_T));
  		}
  		if (enc_dbcs == DBCS_JPNU)
  		    mch_memmove(ScreenLines2 + off,
! 				screenline2 + r * cols,
! 				(size_t)cols * sizeof(schar_T));
  #endif
! 		SCREEN_LINE(cmdline_row + r, 0, cols, cols, FALSE);
  	    }
  	    ret = 4;
  	}
*** ../vim-7.4.796/src/version.c	2015-07-22 22:46:08.127010101 +0200
--- src/version.c	2015-07-25 22:38:04.193354077 +0200
***************
*** 743,744 ****
--- 743,746 ----
  {   /* Add new patch number below this line */
+ /**/
+     797,
  /**/

-- 
Women are probably the main cause of free software starvation.

 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\  an exciting new programming language -- http://www.Zimbu.org        ///
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