[Bug 93844] Intel driver crashes after switching between fullscreen and windowed mode on RetroArch

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93844

--- Comment #20 from Chris Wilson <chris at chris-wilson.co.uk> ---
Gone over the possible settings of info->signal to true when info->draw ==
NULL, and think I have found the last missing piece:

diff --git a/src/sna/sna_dri2.c b/src/sna/sna_dri2.c
index f2f4908..045b12d 100644
--- a/src/sna/sna_dri2.c
+++ b/src/sna/sna_dri2.c
@@ -2787,6 +2787,9 @@ sna_dri2_flip_continue(struct sna_dri2_event *info)
        info->type = info->flip_continue;
        info->flip_continue = 0;

+       if (info->draw == NULL)
+               return false;
+
        if (info->sna->mode.front_active == 0)
                return false;

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