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patch 9.0.0228: crash when pattern looks below the last line

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Problem:    Crash when pattern looks below the last line.
Solution:   Consider invalid lines to be empty. (closes #10938)
This commit is contained in:
Bram Moolenaar
2022-08-19 13:59:25 +01:00
parent 213e70e284
commit 13ed494bb5
4 changed files with 35 additions and 10 deletions
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17
src/regexp_bt.c
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@@ -3439,12 +3439,17 @@ regmatch(
break;
case RE_VCOL:
if (!re_num_cmp((long_u)win_linetabsize(
rex.reg_win == NULL ? curwin : rex.reg_win,
rex.reg_firstlnum + rex.lnum,
rex.line,
(colnr_T)(rex.input - rex.line)) + 1, scan))
status = RA_NOMATCH;
{
win_T *wp = rex.reg_win == NULL ? curwin : rex.reg_win;
linenr_T lnum = rex.reg_firstlnum + rex.lnum;
long_u vcol = 0;
if (lnum > 0 && lnum <= wp->w_buffer->b_ml.ml_line_count)
vcol = (long_u)win_linetabsize(wp, lnum, rex.line,
(colnr_T)(rex.input - rex.line));
if (!re_num_cmp(vcol + 1, scan))
status = RA_NOMATCH;
}
break;
case BOW: // \<word; rex.input points to w