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panel: Don't crash when window buffer disappears between ad refreshes

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This commit is contained in:
K. Lange 2022-07-25 20:35:55 +09:00
parent eed45cbba9
commit 45e7972d68
1 changed files with 2 additions and 2 deletions
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4
apps/panel.c
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@ -297,10 +297,10 @@ static void redraw_alttab(void) {
/* try very hard to get a window texture */
char key[1024];
YUTANI_SHMKEY_EXP(yctx->server_ident, key, 1024, ad->bufid);
size_t size;
size_t size = 0;
uint32_t * buf = shm_obtain(key, &size);
if (buf) {
if (buf && size >= ad->width * ad->height * 4) {
sprite_t tmp;
tmp.width = ad->width;
tmp.height = ad->height;