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vim-patch:9.0.0991: crash when reading help index with various options set

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Problem:    Crash when reading help index with various options set. (Marius
            Gedminas)
Solution:   Do not set wlv.c_extra to NUL when wlv.p_extra is NULL.
            (closes vim/vim#11651)

c67c89c758

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq 2023-03-03 07:41:57 +08:00
parent c2e602b9d0
commit 4a3594f60e
2 changed files with 19 additions and 1 deletions
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2
src/nvim/drawline.c
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@ -2170,7 +2170,7 @@ int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow, bool nochange,
c = (n_extra == 0 && wp->w_p_lcs_chars.tab3)
? wp->w_p_lcs_chars.tab3
: wp->w_p_lcs_chars.tab1;
if (wp->w_p_lbr) {
if (wp->w_p_lbr && p_extra != NULL) {
c_extra = NUL; // using p_extra from above
} else {
c_extra = wp->w_p_lcs_chars.tab2;

18
src/nvim/testdir/test_breakindent.vim
View File

@ -1075,4 +1075,22 @@ func Test_breakindent_column()
bwipeout!
endfunc
func Test_linebreak_list()
" This was setting wlv.c_extra to NUL while wlv.p_extra is NULL
filetype plugin on
syntax enable
edit! $VIMRUNTIME/doc/index.txt
/v_P
setlocal list
setlocal listchars=tab:>-
setlocal linebreak
setlocal nowrap
setlocal filetype=help
redraw!
bwipe!
endfunc
" vim: shiftwidth=2 sts=2 expandtab