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patch 8.1.1603: crash when using unknown highlighting in text property

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Problem:    Crash when using unknown highlighting in text property.
Solution:   Check for zero highlight ID.
This commit is contained in:
Bram Moolenaar 2019-06-28 21:38:00 +02:00
parent 711d02c96d
commit d74af4227b
3 changed files with 15 additions and 2 deletions
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4
src/screen.c
View File

@ -3171,7 +3171,7 @@ win_line(
int row; /* row in the window, excl w_winrow */
int screen_row; /* row on the screen, incl w_winrow */
char_u extra[18]; /* "%ld" and 'fdc' must fit in here */
char_u extra[20]; /* "%ld" and 'fdc' must fit in here */
int n_extra = 0; /* number of extra chars */
char_u *p_extra = NULL; /* string of extra chars, plus NUL */
char_u *p_extra_free = NULL; /* p_extra needs to be freed */
@ -4440,7 +4440,7 @@ win_line(
proptype_T *pt = text_prop_type_by_id(
wp->w_buffer, text_props[tpi].tp_type);
if (pt != NULL)
if (pt != NULL && pt->pt_hl_id > 0)
{
int pt_attr = syn_id2attr(pt->pt_hl_id);

11
src/testdir/test_textprop.vim
View File

@ -792,6 +792,17 @@ func Test_textprop_empty_buffer()
call prop_type_delete('comment')
endfunc
" Adding a text property with invalid highlight should be ignored.
func Test_textprop_invalid_highlight()
call assert_fails("call prop_type_add('dni', {'highlight': 'DoesNotExist'})", 'E970:')
new
call setline(1, ['asdf','asdf'])
call prop_add(1, 1, {'length': 4, 'type': 'dni'})
redraw
bwipe!
call prop_type_delete('dni')
endfunc
" Adding a text property to an empty buffer and then editing another
func Test_textprop_empty_buffer_next()
call prop_type_add("xxx", {})

2
src/version.c
View File

@ -777,6 +777,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1603,
/**/
1602,
/**/