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rust/compiler/rustc_typeck
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Yuki Okushi 7985e4c7c3
Rollup merge of #87524 - FabianWolff:issue-87495, r=Aaron1011 
Fix ICE in `diagnostic_hir_wf_check`

Fixes #87495. The [documentation for `ObligationCauseCode::WellFormed`](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_infer/traits/enum.ObligationCauseCode.html#variant.WellFormed) says that

> it is always correct [...] to specify `WellFormed(None)`

instead of `WellFormed(Some(...))`, which seems to have caused the issue here, as `diagnostic_hir_wf_check` does not expect to be called with an associated constant and will ICE:

fd853c00e2/compiler/rustc_typeck/src/hir_wf_check.rs (L131-L134)

Therefore, I have changed `check_associated_item()` to pass a `WellFormed(None)` for associated constants.

r? ``@Aaron1011``
2021-07-28 18:28:23 +09:00
..
src Rollup merge of #87524 - FabianWolff:issue-87495, r=Aaron1011 2021-07-28 18:28:23 +09:00
Cargo.toml
README.md

README.md

For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.