Patch 8.1.0437
Problem: May access freed memory when syntax HL times out. (Philipp Gesang)
Solution: Clear b_sst_first when clearing b_sst_array.
Files: src/syntax.c
*** ../vim-8.1.0436/src/syntax.c 2018-09-10 21:04:09.872392623 +0200
--- src/syntax.c 2018-09-28 22:18:50.261769939 +0200
***************
*** 1192,1197 ****
--- 1192,1198 ----
for (p = block->b_sst_first; p != NULL; p = p->sst_next)
clear_syn_state(p);
VIM_CLEAR(block->b_sst_array);
+ block->b_sst_first = NULL;
block->b_sst_len = 0;
}
}
***************
*** 1323,1331 ****
synstate_T *p, *prev, *np;
linenr_T n;
- if (block->b_sst_array == NULL) /* nothing to do */
- return;
-
prev = NULL;
for (p = block->b_sst_first; p != NULL; )
{
--- 1324,1329 ----
***************
*** 1378,1384 ****
int dist;
int retval = FALSE;
! if (syn_block->b_sst_array == NULL || syn_block->b_sst_first == NULL)
return retval;
/* Compute normal distance between non-displayed entries. */
--- 1376,1382 ----
int dist;
int retval = FALSE;
! if (syn_block->b_sst_first == NULL)
return retval;
/* Compute normal distance between non-displayed entries. */
*** ../vim-8.1.0436/src/version.c 2018-09-25 22:27:31.958075001 +0200
--- src/version.c 2018-09-28 22:18:00.054149809 +0200
***************
*** 796,797 ****
--- 796,799 ----
{ /* Add new patch number below this line */
+ /**/
+ 437,
/**/
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