Mercurial > vim
changeset 14850:85ef79b16181 v8.1.0437
patch 8.1.0437: may access freed memory when syntax HL times out
commit https://github.com/vim/vim/commit/95892c27b242cdbc78e622c7a861a4e15aec7a30
Author: Bram Moolenaar <Bram@vim.org>
Date: Fri Sep 28 22:26:54 2018 +0200
patch 8.1.0437: may access freed memory when syntax HL times out
Problem: May access freed memory when syntax HL times out. (Philipp Gesang)
Solution: Clear b_sst_first when clearing b_sst_array.
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Fri, 28 Sep 2018 22:30:06 +0200 |
parents | c2d0417c7f19 |
children | 99d8e4106d26 |
files | src/syntax.c src/version.c |
diffstat | 2 files changed, 4 insertions(+), 4 deletions(-) [+] |
line wrap: on
line diff
--- a/src/syntax.c +++ b/src/syntax.c @@ -1192,6 +1192,7 @@ syn_stack_free_block(synblock_T *block) 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; } } @@ -1323,9 +1324,6 @@ syn_stack_apply_changes_block(synblock_T 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; ) { @@ -1378,7 +1376,7 @@ syn_stack_cleanup(void) int dist; int retval = FALSE; - if (syn_block->b_sst_array == NULL || syn_block->b_sst_first == NULL) + if (syn_block->b_sst_first == NULL) return retval; /* Compute normal distance between non-displayed entries. */