To: vim_dev@googlegroups.com

Subject: Patch 7.4.451

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From: Bram Moolenaar <Bram@moolenaar.net>

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

Patch 7.4.451

Problem:    Calling system() with empty input gives an error for writing the

	    temp file.

Solution:   Do not try writing if the string length is zero. (Olaf Dabrunz)

Files:	    src/eval.c

*** ../vim-7.4.450/src/eval.c	2014-09-19 14:26:29.654405000 +0200

--- src/eval.c	2014-09-19 20:23:57.354451850 +0200

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

*** 18638,18650 ****

  	}

  	else

  	{

  	    p = get_tv_string_buf_chk(&argvars[1], buf);

  	    if (p == NULL)

  	    {

  		fclose(fd);

  		goto errret;		/* type error; errmsg already given */

  	    }

! 	    if (fwrite(p, STRLEN(p), 1, fd) != 1)

  		err = TRUE;

  	}

  	if (fclose(fd) != 0)

--- 18638,18653 ----

  	}

  	else

  	{

+ 	    size_t len;

+ 

  	    p = get_tv_string_buf_chk(&argvars[1], buf);

  	    if (p == NULL)

  	    {

  		fclose(fd);

  		goto errret;		/* type error; errmsg already given */

  	    }

! 	    len = STRLEN(p);

! 	    if (len > 0 && fwrite(p, len, 1, fd) != 1)

  		err = TRUE;

  	}

  	if (fclose(fd) != 0)

*** ../vim-7.4.450/src/version.c	2014-09-19 20:07:22.550449677 +0200

--- src/version.c	2014-09-19 20:19:22.390451249 +0200

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

*** 743,744 ****

--- 743,746 ----

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

+ /**/

+     451,

  /**/

-- 

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

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