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+To: vim_dev@googlegroups.com
+Subject: Patch 7.4.871
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.4.871
+Problem:    Vim leaks memory, when 'wildignore' filters out all matches.
+Solution:   Free the files array when it becomes empty.
+Files:      src/misc1.c
+
+
+*** ../vim-7.4.870/src/misc1.c	2015-09-01 16:25:28.357392851 +0200
+--- src/misc1.c	2015-09-15 19:00:07.569914562 +0200
+***************
+*** 9697,9710 ****
+  /*
+   * Expand wildcards.  Calls gen_expand_wildcards() and removes files matching
+   * 'wildignore'.
+!  * Returns OK or FAIL.  When FAIL then "num_file" won't be set.
+   */
+      int
+! expand_wildcards(num_pat, pat, num_file, file, flags)
+      int		   num_pat;	/* number of input patterns */
+      char_u	 **pat;		/* array of input patterns */
+!     int		  *num_file;	/* resulting number of files */
+!     char_u	***file;	/* array of resulting files */
+      int		   flags;	/* EW_DIR, etc. */
+  {
+      int		retval;
+--- 9697,9710 ----
+  /*
+   * Expand wildcards.  Calls gen_expand_wildcards() and removes files matching
+   * 'wildignore'.
+!  * Returns OK or FAIL.  When FAIL then "num_files" won't be set.
+   */
+      int
+! expand_wildcards(num_pat, pat, num_files, files, flags)
+      int		   num_pat;	/* number of input patterns */
+      char_u	 **pat;		/* array of input patterns */
+!     int		  *num_files;	/* resulting number of files */
+!     char_u	***files;	/* array of resulting files */
+      int		   flags;	/* EW_DIR, etc. */
+  {
+      int		retval;
+***************
+*** 9712,9718 ****
+      char_u	*p;
+      int		non_suf_match;	/* number without matching suffix */
+  
+!     retval = gen_expand_wildcards(num_pat, pat, num_file, file, flags);
+  
+      /* When keeping all matches, return here */
+      if ((flags & EW_KEEPALL) || retval == FAIL)
+--- 9712,9718 ----
+      char_u	*p;
+      int		non_suf_match;	/* number without matching suffix */
+  
+!     retval = gen_expand_wildcards(num_pat, pat, num_files, files, flags);
+  
+      /* When keeping all matches, return here */
+      if ((flags & EW_KEEPALL) || retval == FAIL)
+***************
+*** 9726,9772 ****
+      {
+  	char_u	*ffname;
+  
+! 	/* check all files in (*file)[] */
+! 	for (i = 0; i < *num_file; ++i)
+  	{
+! 	    ffname = FullName_save((*file)[i], FALSE);
+  	    if (ffname == NULL)		/* out of memory */
+  		break;
+  # ifdef VMS
+  	    vms_remove_version(ffname);
+  # endif
+! 	    if (match_file_list(p_wig, (*file)[i], ffname))
+  	    {
+! 		/* remove this matching file from the list */
+! 		vim_free((*file)[i]);
+! 		for (j = i; j + 1 < *num_file; ++j)
+! 		    (*file)[j] = (*file)[j + 1];
+! 		--*num_file;
+  		--i;
+  	    }
+  	    vim_free(ffname);
+  	}
+      }
+  #endif
+  
+      /*
+       * Move the names where 'suffixes' match to the end.
+       */
+!     if (*num_file > 1)
+      {
+  	non_suf_match = 0;
+! 	for (i = 0; i < *num_file; ++i)
+  	{
+! 	    if (!match_suffix((*file)[i]))
+  	    {
+  		/*
+  		 * Move the name without matching suffix to the front
+  		 * of the list.
+  		 */
+! 		p = (*file)[i];
+  		for (j = i; j > non_suf_match; --j)
+! 		    (*file)[j] = (*file)[j - 1];
+! 		(*file)[non_suf_match++] = p;
+  	    }
+  	}
+      }
+--- 9726,9780 ----
+      {
+  	char_u	*ffname;
+  
+! 	/* check all files in (*files)[] */
+! 	for (i = 0; i < *num_files; ++i)
+  	{
+! 	    ffname = FullName_save((*files)[i], FALSE);
+  	    if (ffname == NULL)		/* out of memory */
+  		break;
+  # ifdef VMS
+  	    vms_remove_version(ffname);
+  # endif
+! 	    if (match_file_list(p_wig, (*files)[i], ffname))
+  	    {
+! 		/* remove this matching files from the list */
+! 		vim_free((*files)[i]);
+! 		for (j = i; j + 1 < *num_files; ++j)
+! 		    (*files)[j] = (*files)[j + 1];
+! 		--*num_files;
+  		--i;
+  	    }
+  	    vim_free(ffname);
+  	}
++ 
++ 	/* If the number of matches is now zero, we fail. */
++ 	if (*num_files == 0)
++ 	{
++ 	    vim_free(*files);
++ 	    *files = NULL;
++ 	    return FAIL;
++ 	}
+      }
+  #endif
+  
+      /*
+       * Move the names where 'suffixes' match to the end.
+       */
+!     if (*num_files > 1)
+      {
+  	non_suf_match = 0;
+! 	for (i = 0; i < *num_files; ++i)
+  	{
+! 	    if (!match_suffix((*files)[i]))
+  	    {
+  		/*
+  		 * Move the name without matching suffix to the front
+  		 * of the list.
+  		 */
+! 		p = (*files)[i];
+  		for (j = i; j > non_suf_match; --j)
+! 		    (*files)[j] = (*files)[j - 1];
+! 		(*files)[non_suf_match++] = p;
+  	    }
+  	}
+      }
+*** ../vim-7.4.870/src/version.c	2015-09-15 18:29:35.488932799 +0200
+--- src/version.c	2015-09-15 18:58:45.310768934 +0200
+***************
+*** 743,744 ****
+--- 743,746 ----
+  {   /* Add new patch number below this line */
++ /**/
++     871,
+  /**/
+
+-- 
+Team-building exercises come in many forms but they all trace their roots back
+to the prison system.  In your typical team-building exercise the employees
+are subjected to a variety of unpleasant situations until they become either a
+cohesive team or a ring of car jackers.
+				(Scott Adams - The Dilbert principle)
+
+ /// 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        ///
+ \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///