To: vim_dev@googlegroups.com
Subject: Patch 7.4.451
Fcc: outbox
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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