`tcx.crate_extern_paths(crate_num(&local_crate))` ICE

[zjp-CN]

let local_crate = stable_mir::local_crate();
tcx.crate_extern_paths(stable_mir::rustc_internal::crate_num(&local_crate)); // ICE

error: internal compiler error: compiler/rustc_middle/src/query/plumbing.rs:706:5: 
`tcx.crate_extern_paths(LocalCrate)` is not supported for this key;
  hint: Queries can be either made to the local crate, or the external crate.
This error means you tried to use it for one that's not supported.
  If that's not the case, crate_extern_paths was likely never assigned to a provider function.


thread 'rustc' panicked at compiler/rustc_middle/src/query/plumbing.rs:706:5:
Box<dyn Any>

[makai410]

it doesn't seem to be a stable-mir fault, since I just reproduced it by directly adding a let _ = self.tcx.crate_extern_paths(LOCAL_CRATE); to SmirCtxt::local_crate().

[zjp-CN]

Yeah, I suspect it too. But it'd good if stable_mir exposes some basic information about a crate, like entry source path and crate types.

[celinval]

Hi @zjp-CN, we can totally add more information about crates. Can you please create a new issue with the information you need? This is what we have right now:

https://doc.rust-lang.org/nightly/nightly-rustc/stable_mir/struct.Crate.html#implementations

[celinval]

In the meantime, I'm going to close this issue, since this query is internal to the compiler and out of scope of stable_mir. Thanks!