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vim-patch:9.0.1376: accessing invalid memory with put in Visual block mode (#22505)

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Problem:    Accessing invalid memory with put in Visual block mode.
Solution:   Adjust the cursor column if needed.

1c73b65229

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq 2023-03-04 08:39:54 +08:00 committed by GitHub
parent b48ad28a3e
commit 446c353a50
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 21 additions and 1 deletions
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11
src/nvim/ops.c
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@ -3346,7 +3346,7 @@ void do_put(int regname, yankreg_T *reg, int dir, long count, int flags)
ptr += yanklen;
// insert block's trailing spaces only if there's text behind
if ((j < count - 1 || !shortline) && spaces) {
if ((j < count - 1 || !shortline) && spaces > 0) {
memset(ptr, ' ', (size_t)spaces);
ptr += spaces;
} else {
@ -3685,6 +3685,15 @@ error:
msgmore(nr_lines);
curwin->w_set_curswant = true;
// Make sure the cursor is not after the NUL.
int len = (int)strlen(get_cursor_line_ptr());
if (curwin->w_cursor.col > len) {
if (cur_ve_flags == VE_ALL) {
curwin->w_cursor.coladd = curwin->w_cursor.col - len;
}
curwin->w_cursor.col = len;
}
end:
if (cmdmod.cmod_flags & CMOD_LOCKMARKS) {
curbuf->b_op_start = orig_start;

11
src/nvim/testdir/test_put.vim
View File

@ -235,5 +235,16 @@ func Test_put_visual_mode()
set selection&
endfunc
func Test_put_visual_block_mode()
enew
exe "norm 0R\<CR>\<C-C>V"
sil exe "norm \<C-V>c \<MiddleDrag>"
set ve=all
sil norm vz=p
bwipe!
set ve=
endfunc
" vim: shiftwidth=2 sts=2 expandtab