Crash with X11 running the control ui

[Benhalor]

When building the control UI on ubuntu, the following crash occurs when dragging the pointer of the mouse inside the windows :

thread 'main' panicked at 'attempted to leave type platform::platform::x11::util::input::PointerState uninitialized, which is invalid', /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/core/src/mem/mod.rs:658:9
stack backtrace:
0: rust_begin_unwind
at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/panicking.rs:483
1: core::panicking::panic_fmt
at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/core/src/panicking.rs:85
2: core::panicking::panic
at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/core/src/panicking.rs:50
3: core::mem::uninitialized
at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/core/src/mem/mod.rs:658
4: winit::platform::platform::x11::util::input::::query_pointer
at /home/gabriel/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.19.5/src/platform/linux/x11/util/input.rs:94
5: winit::platform::platform::x11::EventsLoop::process_event
at /home/gabriel/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.19.5/src/platform/linux/x11/mod.rs:956
6: winit::platform::platform::x11::EventsLoop::poll_events
at /home/gabriel/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.19.5/src/platform/linux/x11/mod.rs:270
7: winit::platform::platform::EventsLoop::poll_events
at /home/gabriel/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.19.5/src/platform/linux/mod.rs:522
8: winit::EventsLoop::poll_events
at /home/gabriel/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.19.5/src/lib.rs:277
9: makair_control::display::support::EventLoop::next
at /home/gabriel/makair-control-ui/src/display/support.rs:34
10: makair_control::display::events::DisplayEvents::handle
at /home/gabriel/makair-control-ui/src/display/events.rs:53
11: makair_control::display::drawer::DisplayDrawer::run
at /home/gabriel/makair-control-ui/src/display/drawer.rs:118
12: makair_control::display::window::DisplayWindow::spawn
at /home/gabriel/makair-control-ui/src/display/window.rs:121
13: makair_control::main
at /home/gabriel/makair-control-ui/src/main.rs:124
14: core::ops::function::FnOnce::call_once
at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/core/src/ops/function.rs:227
note: Some details are omitted, run with RUST_BACKTRACE=full for a verbose backtrace.

[Benhalor]

Seems to be related to this :
rust-windowing/winit#1773

[valeriansaliou]

Yep, seems to be a bug that's not directly caused by the UI code but a third party library.

[valeriansaliou]

Bumping winit requires bumping conrod_winit which requires bumping conrod, which is for now a no-go for me.

[valeriansaliou]

Closing as the target window server is Wayland, and thus this is not happening on a live machine. X11 is kind of "unsupported" / not built for.

[Benhalor]

Confirmed that using Wayland on ubuntu doesnt raise the error