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Subject: Patch 7.4.814

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From: Bram Moolenaar <Bram@moolenaar.net>

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------------

Patch 7.4.814

Problem:    Illegal memory access with "sy match a fold".

Solution:   Check for empty string. (Dominique Pelle)

Files:      src/syntax.c

*** ../vim-7.4.813/src/syntax.c	2015-06-25 18:36:20.511463791 +0200

--- src/syntax.c	2015-08-11 15:25:45.521870095 +0200

***************

*** 5654,5660 ****

      char_u	*cpo_save;

      /* need at least three chars */

!     if (arg == NULL || arg[1] == NUL || arg[2] == NUL)

  	return NULL;

      end = skip_regexp(arg + 1, *arg, TRUE, NULL);

--- 5654,5660 ----

      char_u	*cpo_save;

      /* need at least three chars */

!     if (arg == NULL || arg[0] == NUL || arg[1] == NUL || arg[2] == NUL)

  	return NULL;

      end = skip_regexp(arg + 1, *arg, TRUE, NULL);

*** ../vim-7.4.813/src/version.c	2015-08-11 14:26:03.598931086 +0200

--- src/version.c	2015-08-11 15:24:29.398729091 +0200

***************

*** 743,744 ****

--- 743,746 ----

  {   /* Add new patch number below this line */

+ /**/

+     814,

  /**/

-- 

Witches prefer brooms: vacuum-cleaners need extension cords!

 /// 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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