hello world example causes compiler panic on windows #56
Comments
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Hmm.... that's not good. I don't have a windows box but my version running on macOS checks just fine. Can you try checking the expansion too? I could release a patch that works around this bug, since given your stack trace I think I know where the ICE is coming from. fn app(cx: Scope) -> Element {
cx.render(LazyNodes::new_some(move |__cx: NodeFactory| -> VNode {
use dioxus_elements::{GlobalAttributes, SvgAttributes};
__cx.element(
dioxus_elements::div,
[],
[],
[__cx.text(format_args!("Hello, world!"))],
None,
)
}))
} |
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I get the same result with the expanded code: |
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Edit: I have been able to replicate the bug compiling from scratch. Disregard the previous suggestion. |
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For what it's worth, any code that has a dependency on dioxus seems to yield the same error, even with my main code being Something inside dioxus is causing the rust compiler to panic. |
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I've uploaded Can you try changing your Dioxus dependency to dioxus = { git = "https://github.com/DioxusLabs/dioxus", branch = "jk/fix-ice", features = [ "desktop"] }This should remove the generics around |
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@jkelleyrtp I'm trying (and failing) to create a minimally reproducible example for the rust compiler team. I see that the generics around AsRef seem to be the issue, so I'll check if that's in the known internal compiler errors repository. |
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The The |
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Looks like the bug is in LazyNodes. I use the same logic from https://docs.rs/stack_dst/latest/stack_dst/ - maybe they also cause an ICE. Found a simply workaround/fix, going to publish it. @anderslanglands @Patrick-Poitras |
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I found a minimal example, it features the stuff from nodes and lazynodes. use std::mem;
use std::marker::PhantomData;
struct LazyStack {}
impl Drop for LazyStack {
fn drop(&mut self) {
let g: *mut dyn FnMut(Option<NodeFactory<'_>>) -> Option<VNode<'_>> =
unsafe {make_fat_ptr()};
let clos = (unsafe { &mut *g });
clos(None);
}
}
unsafe fn make_fat_ptr<T: ?Sized>() -> *mut T {
mem::MaybeUninit::<*mut T>::uninit().assume_init()
}
enum VNode<'src> {
Fragment(&'src [VNode<'src>]),
}
struct NodeFactory<'a> {
x : &'a PhantomData<u32>,
}I don't know what simplified into |
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The current version of Dioxus runs in my windows VM and has been pushed. Very interesting it triggered the ICE. @Patrick-Poitras That's a pretty crazy set of incantations... |
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@jkelleyrtp the `jk/fix-ice' branch does indeed fix the ICE but running the example gives me: |
Looks like windows redirects the WebView when it loads. Try the Sorry... I don't use windows so I didn't know about either of these! |
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@jkelleyrtp yep that works now! Only weird thing is that the "Hello, world!" text doesn't render until I move or resize the window. |
Strange - but at least I know where to look. The event loop on windows probably sleeps or doesn't call the "events cleared" message. I'm getting the same behavior so at least I can debug it now. |
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Closing this issue because we no longer cause an ICE, but looking at the other win issues. |
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We've put the ICE into the database over on the language side. |
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Excited to try it out so had a crack at the hello world example on Windows just now and it causes an ICE:
rust-lang/rust#92537
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