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Fixes segfault when no xcb_render_pictforminfo_t is available

This commit is contained in:
emersion 2017-11-02 17:21:00 +01:00
parent bb76f52640
commit 900fb326f7
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1 changed files with 8 additions and 7 deletions
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15
xwayland/xwm.c
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@ -1193,17 +1193,18 @@ static void xwm_get_render_format(struct wlr_xwm *xwm) {
xcb_render_query_pict_formats(xwm->xcb_conn);
xcb_render_query_pict_formats_reply_t *reply =
xcb_render_query_pict_formats_reply(xwm->xcb_conn, cookie, NULL);
xcb_render_pictforminfo_t *formats =
xcb_render_query_pict_formats_formats(reply);
int len = xcb_render_query_pict_formats_formats_length(reply);
xcb_render_pictforminfo_iterator_t iter =
xcb_render_query_pict_formats_formats_iterator(reply);
xcb_render_pictforminfo_t *format = NULL;
for (int i = 0; i < len; ++i) {
if (formats[i].depth == 32) {
format = &formats[i];
while (iter.rem > 0) {
if (iter.data->depth == 32) {
format = iter.data;
break;
}
// TODO: segfaults when not found
xcb_render_pictforminfo_next(&iter);
}
if (format == NULL) {
wlr_log(L_DEBUG, "No 32 bit render format");
return;