Patch 7.3.148
Problem: A syntax file with a huge number of items or clusters causes weird
behavior, a hang or a crash. (Yukihiro Nakadaira)
Solution: Check running out of IDs. (partly by Ben Schmidt)
Files: src/syntax.c
*** ../vim-7.3.147/src/syntax.c 2011-01-22 00:58:15.000000000 +0100
--- src/syntax.c 2011-04-01 14:25:39.000000000 +0200
***************
*** 219,234 ****
/*
* Syntax group IDs have different types:
! * 0 - 9999 normal syntax groups
! * 10000 - 14999 ALLBUT indicator (current_syn_inc_tag added)
! * 15000 - 19999 TOP indicator (current_syn_inc_tag added)
! * 20000 - 24999 CONTAINED indicator (current_syn_inc_tag added)
! * >= 25000 cluster IDs (subtract SYNID_CLUSTER for the cluster ID)
! */
! #define SYNID_ALLBUT 10000 /* syntax group ID for contains=ALLBUT */
! #define SYNID_TOP 15000 /* syntax group ID for contains=TOP */
! #define SYNID_CONTAINED 20000 /* syntax group ID for
contains=CONTAINED */
! #define SYNID_CLUSTER 25000 /* first syntax group ID for clusters */
/*
* Annoying Hack(TM): ":syn include" needs this pointer to pass to
--- 219,238 ----
/*
* Syntax group IDs have different types:
! * 0 - 19999 normal syntax groups
! * 20000 - 20999 ALLBUT indicator (current_syn_inc_tag added)
! * 21000 - 21999 TOP indicator (current_syn_inc_tag added)
! * 22000 - 22999 CONTAINED indicator (current_syn_inc_tag added)
! * 23000 - 32767 cluster IDs (subtract SYNID_CLUSTER for the cluster ID)
! */
! #define SYNID_ALLBUT 20000 /* syntax group ID for contains=ALLBUT */
! #define SYNID_TOP 21000 /* syntax group ID for contains=TOP */
! #define SYNID_CONTAINED 22000 /* syntax group ID for
contains=CONTAINED */
! #define SYNID_CLUSTER 23000 /* first syntax group ID for clusters */
!
! #define MAX_SYNID SYNID_ALLBUT
! #define MAX_SYN_INC_TAG 999 /* maximum before the above
overflow */
! #define MAX_CLUSTER_ID (32767 - SYNID_CLUSTER)
/*
* Annoying Hack(TM): ":syn include" needs this pointer to pass to
***************
*** 3442,3447 ****
--- 3446,3454 ----
/* free the stored states */
syn_stack_free_all(block);
invalidate_current_state();
+
+ /* Reset the counter for ":syn include" */
+ running_syn_inc_tag = 0;
}
/*
***************
*** 4661,4666 ****
--- 4668,4675 ----
return;
}
sgl_id = syn_check_cluster(arg, (int)(group_name_end - arg));
+ if (sgl_id == 0)
+ return;
/* separate_nextcmd() and expand_filename() depend on this */
eap->arg = rest;
}
***************
*** 4689,4694 ****
--- 4698,4708 ----
* Save and restore the existing top-level grouplist id and ":syn
* include" tag around the actual inclusion.
*/
+ if (running_syn_inc_tag >= MAX_SYN_INC_TAG)
+ {
+ EMSG((char_u *)_("E847: Too many syntax includes"));
+ return;
+ }
prev_syn_inc_tag = current_syn_inc_tag;
current_syn_inc_tag = ++running_syn_inc_tag;
prev_toplvl_grp = curwin->w_s->b_syn_topgrp;
***************
*** 4712,4718 ****
char_u *group_name_end;
int syn_id;
char_u *rest;
! char_u *keyword_copy;
char_u *p;
char_u *kw;
syn_opt_arg_T syn_opt_arg;
--- 4726,4732 ----
char_u *group_name_end;
int syn_id;
char_u *rest;
! char_u *keyword_copy = NULL;
char_u *p;
char_u *kw;
syn_opt_arg_T syn_opt_arg;
***************
*** 4724,4732 ****
if (rest != NULL)
{
syn_id = syn_check_group(arg, (int)(group_name_end - arg));
!
! /* allocate a buffer, for removing the backslashes in the keyword */
! keyword_copy = alloc((unsigned)STRLEN(rest) + 1);
if (keyword_copy != NULL)
{
syn_opt_arg.flags = 0;
--- 4738,4746 ----
if (rest != NULL)
{
syn_id = syn_check_group(arg, (int)(group_name_end - arg));
! if (syn_id != 0)
! /* allocate a buffer, for removing backslashes in the keyword */
! keyword_copy = alloc((unsigned)STRLEN(rest) + 1);
if (keyword_copy != NULL)
{
syn_opt_arg.flags = 0;
***************
*** 5133,5139 ****
(item == ITEM_SKIP) ? SPTYPE_SKIP : SPTYPE_END;
SYN_ITEMS(curwin->w_s)[idx].sp_flags |= syn_opt_arg.flags;
SYN_ITEMS(curwin->w_s)[idx].sp_syn.id = syn_id;
! SYN_ITEMS(curwin->w_s)[idx].sp_syn.inc_tag =
current_syn_inc_tag;
SYN_ITEMS(curwin->w_s)[idx].sp_syn_match_id =
ppp->pp_matchgroup_id;
#ifdef FEAT_CONCEAL
--- 5147,5154 ----
(item == ITEM_SKIP) ? SPTYPE_SKIP : SPTYPE_END;
SYN_ITEMS(curwin->w_s)[idx].sp_flags |= syn_opt_arg.flags;
SYN_ITEMS(curwin->w_s)[idx].sp_syn.id = syn_id;
! SYN_ITEMS(curwin->w_s)[idx].sp_syn.inc_tag =
! current_syn_inc_tag;
SYN_ITEMS(curwin->w_s)[idx].sp_syn_match_id =
ppp->pp_matchgroup_id;
#ifdef FEAT_CONCEAL
***************
*** 5426,5431 ****
--- 5441,5454 ----
curwin->w_s->b_syn_clusters.ga_growsize = 10;
}
+ len = curwin->w_s->b_syn_clusters.ga_len;
+ if (len >= MAX_CLUSTER_ID)
+ {
+ EMSG((char_u *)_("E848: Too many syntax clusters"));
+ vim_free(name);
+ return 0;
+ }
+
/*
* Make room for at least one other cluster entry.
*/
***************
*** 5434,5440 ****
vim_free(name);
return 0;
}
- len = curwin->w_s->b_syn_clusters.ga_len;
vim_memset(&(SYN_CLSTR(curwin->w_s)[len]), 0, sizeof(syn_cluster_T));
SYN_CLSTR(curwin->w_s)[len].scl_name = name;
--- 5457,5462 ----
***************
*** 5476,5483 ****
if (rest != NULL)
{
! scl_id = syn_check_cluster(arg, (int)(group_name_end - arg))
! - SYNID_CLUSTER;
for (;;)
{
--- 5498,5507 ----
if (rest != NULL)
{
! scl_id = syn_check_cluster(arg, (int)(group_name_end - arg));
! if (scl_id == 0)
! return;
! scl_id -= SYNID_CLUSTER;
for (;;)
{
***************
*** 5516,5522 ****
if (got_clstr)
{
redraw_curbuf_later(SOME_VALID);
! syn_stack_free_all(curwin->w_s); /* Need to recompute all
syntax. */
}
}
--- 5540,5546 ----
if (got_clstr)
{
redraw_curbuf_later(SOME_VALID);
! syn_stack_free_all(curwin->w_s); /* Need to recompute all. */
}
}
***************
*** 8972,8977 ****
--- 8996,9008 ----
highlight_ga.ga_growsize = 10;
}
+ if (highlight_ga.ga_len >= MAX_SYNID)
+ {
+ EMSG(_("E849: Too many syntax groups"));
+ vim_free(name);
+ return 0;
+ }
+
/*
* Make room for at least one other syntax_highlight entry.
*/
*** ../vim-7.3.147/src/version.c 2011-04-01 13:05:37.000000000 +0200
--- src/version.c 2011-04-01 14:26:44.000000000 +0200
***************
*** 716,717 ****
--- 716,719 ----
{ /* Add new patch number below this line */
+ /**/
+ 148,
/**/
--
BLACK KNIGHT: None shall pass.
ARTHUR: I have no quarrel with you, brave Sir knight, but I must cross
this bridge.
BLACK KNIGHT: Then you shall die.
"Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD
/// Bram Moolenaar -- [email protected] -- 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 ///
--
You received this message from the "vim_dev" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php
