To: vim-dev@vim.org
Subject: Patch 7.1.171
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
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------------
 
Patch 7.1.171
Problem:    Reading one byte before allocated memory.
Solution:   Check index not to become negative. (Dominique Pelle)
Files:	    src/ex_getln.c
 
 
*** ../vim-7.1.170/src/ex_getln.c	Tue Oct 30 17:36:31 2007
--- src/ex_getln.c	Tue Dec  4 21:49:24 2007
***************
*** 1186,1195 ****
  	case K_LEFT:
  	case K_S_LEFT:
  	case K_C_LEFT:
  		do
  		{
- 		    if (ccline.cmdpos == 0)
- 			break;
  		    --ccline.cmdpos;
  #ifdef FEAT_MBYTE
  		    if (has_mbyte)	/* move to first byte of char */
--- 1186,1195 ----
  	case K_LEFT:
  	case K_S_LEFT:
  	case K_C_LEFT:
+ 		if (ccline.cmdpos == 0)
+ 		    goto cmdline_not_changed;
  		do
  		{
  		    --ccline.cmdpos;
  #ifdef FEAT_MBYTE
  		    if (has_mbyte)	/* move to first byte of char */
***************
*** 1198,1204 ****
  #endif
  		    ccline.cmdspos -= cmdline_charsize(ccline.cmdpos);
  		}
! 		while ((c == K_S_LEFT || c == K_C_LEFT
  			       || (mod_mask & (MOD_MASK_SHIFT|MOD_MASK_CTRL)))
  			&& ccline.cmdbuff[ccline.cmdpos - 1] != ' ');
  #ifdef FEAT_MBYTE
--- 1198,1205 ----
  #endif
  		    ccline.cmdspos -= cmdline_charsize(ccline.cmdpos);
  		}
! 		while (ccline.cmdpos > 0
! 			&& (c == K_S_LEFT || c == K_C_LEFT
  			       || (mod_mask & (MOD_MASK_SHIFT|MOD_MASK_CTRL)))
  			&& ccline.cmdbuff[ccline.cmdpos - 1] != ' ');
  #ifdef FEAT_MBYTE
*** ../vim-7.1.170/src/version.c	Fri Dec  7 17:30:04 2007
--- src/version.c	Fri Dec  7 20:00:06 2007
***************
*** 668,669 ****
--- 668,671 ----
  {   /* Add new patch number below this line */
+ /**/
+     171,
  /**/
 
-- 
Some of the well know MS-Windows errors:
	EMULTI		Multitasking attempted, system confused
	EKEYBOARD	Keyboard locked, try getting out of this one!
	EXPLAIN		Unexplained error, please tell us what happened
	EFUTURE		Reserved for our future mistakes
 
 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\        download, build and distribute -- http://www.A-A-P.org        ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///