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patch 8.0.0234: crash when using put in Visual mode

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Problem:    When several lines are visually selected and one of them is short,
            using put may cause a crash. (Axel Bender)
Solution:   Check for a short line. (Christian Brabandt)
This commit is contained in:
Bram Moolenaar
2017-01-24 19:55:43 +01:00
parent bff6ad1331
commit 941c12da3c
3 changed files with 27 additions and 3 deletions
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15
src/ops.c
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@@ -3774,16 +3774,25 @@ do_put(
*/
if (y_type == MCHAR && y_size == 1)
{
linenr_T end = curbuf->b_visual.vi_end.lnum;
linenr_T end;
if (curbuf->b_visual.vi_end.lnum < curbuf->b_visual.vi_start.lnum)
end = curbuf->b_visual.vi_start.lnum;
if (VIsual_active)
{
end = curbuf->b_visual.vi_end.lnum;
if (end < curbuf->b_visual.vi_start.lnum)
end = curbuf->b_visual.vi_start.lnum;
}
do {
totlen = count * yanklen;
if (totlen > 0)
{
oldp = ml_get(lnum);
if (VIsual_active && col > (int)STRLEN(oldp))
{
lnum++;
continue;
}
newp = alloc_check((unsigned)(STRLEN(oldp) + totlen + 1));
if (newp == NULL)
goto end; /* alloc() gave an error message */