Mercurial > vim
diff src/misc2.c @ 10110:cfb38b57d407 v7.4.2326
commit https://github.com/vim/vim/commit/d5824ce1b5491df7d2eb0b66189d366fa67b4585
Author: Bram Moolenaar <Bram@vim.org>
Date: Sun Sep 4 20:35:01 2016 +0200
patch 7.4.2326
Problem: Illegal memory access when Visual selection starts in invalid
position. (Dominique Pelle)
Solution: Correct position when needed.
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 04 Sep 2016 20:45:05 +0200 |
| parents | 4aead6a9b7a9 |
| children | c036c0f636d5 |
line wrap: on
line diff
--- a/src/misc2.c +++ b/src/misc2.c @@ -505,6 +505,28 @@ get_cursor_rel_lnum( } /* + * Make sure "pos.lnum" and "pos.col" are valid in "buf". + * This allows for the col to be on the NUL byte. + */ + void +check_pos(buf_T *buf, pos_T *pos) +{ + char_u *line; + colnr_T len; + + if (pos->lnum > buf->b_ml.ml_line_count) + pos->lnum = buf->b_ml.ml_line_count; + + if (pos->col > 0) + { + line = ml_get_buf(buf, pos->lnum, FALSE); + len = (colnr_T)STRLEN(line); + if (pos->col > len) + pos->col = len; + } +} + +/* * Make sure curwin->w_cursor.lnum is valid. */ void