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patch 9.0.0527: long sign text may overflow buffer

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Problem:    Long sign text may overflow buffer.
Solution:   Use a larger buffer.  Prevent for overflow.
This commit is contained in:
Bram Moolenaar
2022-09-21 11:21:57 +01:00
parent f7c7aa3594
commit 2b1ddf19f8
3 changed files with 23 additions and 5 deletions
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12
src/drawline.c
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@@ -124,7 +124,9 @@ typedef struct {
int saved_c_final;
int saved_char_attr;
char_u extra[21]; // "%ld " and 'fdc' must fit in here
char_u extra[NUMBUFLEN + MB_MAXBYTES];
// "%ld " and 'fdc' must fit in here, as well
// any text sign
#ifdef FEAT_DIFF
hlf_T diff_hlf; // type of diff highlighting
@@ -259,13 +261,13 @@ get_sign_display_info(
{
if (nrcol)
{
int n, width = number_width(wp) - 2;
int width = number_width(wp) - 2;
int n;
for (n = 0; n < width; n++)
wlv->extra[n] = ' ';
wlv->extra[n] = 0;
STRCAT(wlv->extra, wlv->p_extra);
STRCAT(wlv->extra, " ");
vim_snprintf((char *)wlv->extra + n,
sizeof(wlv->extra) - n, "%s ", wlv->p_extra);
wlv->p_extra = wlv->extra;
}
wlv->c_extra = NUL;