Patch 7.2.443

[Bram Moolenaar]

Patch 7.2.443
Problem:    Using taglist() on a tag file with duplicate fields generates an
            internal error. (Peter Odding)
Solution:   Check for duplicate field names.
Files:      src/eval.c, src/proto/eval.pro, src/tag.c


*** ../vim-7.2.442/src/eval.c 2010-05-28 22:06:41.000000000 +0200
--- src/eval.c 2010-06-12 19:59:09.000000000 +0200
***************
*** 451,457 ****
  static void dictitem_remove __ARGS((dict_T *dict, dictitem_T *item));
  static dict_T *dict_copy __ARGS((dict_T *orig, int deep, int copyID));
  static long dict_len __ARGS((dict_T *d));
- static dictitem_T *dict_find __ARGS((dict_T *d, char_u *key, int len));
  static char_u *dict2string __ARGS((typval_T *tv, int copyID));
  static int get_dict_tv __ARGS((char_u **arg, typval_T *rettv, int evaluate));
  static char_u *echo_string __ARGS((typval_T *tv, char_u **tofree, char_u *numbuf, int copyID));
--- 451,456 ----
***************
*** 7012,7018 ****
   * If "len" is negative use strlen(key).
   * Returns NULL when not found.
   */
!     static dictitem_T *
  dict_find(d, key, len)
      dict_T *d;
      char_u *key;
--- 7011,7017 ----
   * If "len" is negative use strlen(key).
   * Returns NULL when not found.
   */
!     dictitem_T *
  dict_find(d, key, len)
      dict_T *d;
      char_u *key;
*** ../vim-7.2.442/src/proto/eval.pro 2010-01-19 15:51:29.000000000 +0100
--- src/proto/eval.pro 2010-06-12 19:59:13.000000000 +0200
***************
*** 56,61 ****
--- 56,62 ----
  void dictitem_free __ARGS((dictitem_T *item));
  int dict_add __ARGS((dict_T *d, dictitem_T *item));
  int dict_add_nr_str __ARGS((dict_T *d, char *key, long nr, char_u *str));
+ dictitem_T *dict_find __ARGS((dict_T *d, char_u *key, int len));
  char_u *get_dict_string __ARGS((dict_T *d, char_u *key, int save));
  long get_dict_number __ARGS((dict_T *d, char_u *key));
  char_u *get_function_name __ARGS((expand_T *xp, int idx));
*** ../vim-7.2.442/src/tag.c 2010-02-24 14:46:58.000000000 +0100
--- src/tag.c 2010-06-12 20:01:45.000000000 +0200
***************
*** 3771,3777 ****
  static int add_tag_field __ARGS((dict_T *dict, char *field_name, char_u *start, char_u *end));
 
  /*
!  * Add a tag field to the dictionary "dict"
   */
      static int
  add_tag_field(dict, field_name, start, end)
--- 3771,3778 ----
  static int add_tag_field __ARGS((dict_T *dict, char *field_name, char_u *start, char_u *end));
 
  /*
!  * Add a tag field to the dictionary "dict".
!  * Return OK or FAIL.
   */
      static int
  add_tag_field(dict, field_name, start, end)
***************
*** 3783,3788 ****
--- 3784,3800 ----
      char_u buf[MAXPATHL];
      int len = 0;
 
+     /* check that the field name doesn't exist yet */
+     if (dict_find(dict, (char_u *)field_name, -1) != NULL)
+     {
+ if (p_verbose > 0)
+ {
+    verbose_enter();
+    smsg((char_u *)_("Duplicate field name: %s"), field_name);
+    verbose_leave();
+ }
+ return FAIL;
+     }
      if (start != NULL)
      {
  if (end == NULL)
*** ../vim-7.2.442/src/version.c 2010-06-05 12:49:40.000000000 +0200
--- src/version.c 2010-06-12 20:05:27.000000000 +0200
***************
*** 683,684 ****
--- 683,686 ----
  {   /* Add new patch number below this line */
+ /**/
+     443,
  /**/

--
hundred-and-one symptoms of being an internet addict:
191. You rate eating establishments not by the quality of the food,
     but by the availability of electrical outlets for your PowerBook.

 /// Bram Moolenaar -- [hidden email] -- 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    ///

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[Peter Odding-3]

Bram Moolenaar wrote:
> Patch 7.2.443
> Problem:    Using taglist() on a tag file with duplicate fields generates an
>             internal error. (Peter Odding)
> Solution:   Check for duplicate field names.
> Files:      src/eval.c, src/proto/eval.pro, src/tag.c

I just updated and recompiled Vim to include this patch and can confirm
it fixes the problem. A normal taglist('.') call now returns the valid
results without the E685 error:

        :echo len(taglist('.'))
        5804

While with the verbose option set, functionality is exactly the same
(still no E685!) but Vim warns the user about a duplicate field name:

        :verbose echo len(taglist('.'))
        Duplicate field name: language
        5804

Thank you very much for the quick patch!

  - Peter Odding

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