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sdl2: fix crash in handle_windowevent() when restoring the screen size
The Ctrl-Alt-u keyboard shortcut restores the screen to its original size. In the SDL2 UI this is done by destroying the window and creating a new one. The old window emits SDL_WINDOWEVENT_HIDDEN when it's destroyed, but trying to call SDL_GetWindowFromID() from that event's window ID returns a null pointer. handle_windowevent() assumes that the pointer is never null so it results in a crash. Cc: qemu-stable@nongnu.org Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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@ -521,6 +521,10 @@ static void handle_windowevent(SDL_Event *ev)
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{
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{
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struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
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struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
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if (!scon) {
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return;
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}
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switch (ev->window.event) {
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switch (ev->window.event) {
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case SDL_WINDOWEVENT_RESIZED:
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case SDL_WINDOWEVENT_RESIZED:
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{
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{
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