Stop passing resolver disambiguator state to AST lowering.

[cjgillot]

AST->HIR lowering can use a disjoint set of DefPathData as the resolver, so we don't need to pass the disambiguator state.

r? @oli-obk

[rustbot]

Some changes occurred in compiler/rustc_sanitizers

cc @rcvalle

Some changes occurred in tests/codegen/sanitizer

cc @rcvalle

[cjgillot]

I'm not certain changing mangling is the best idea. Is there some update to a demangler to be made before this PR is accepted?

[oli-obk]

I'm surprised you're not getting the demangler roundtrip ICE, but most likely this code path isn't hit in codegen tests with v0 mangling.

I don't think it's possible without changing mangling

[cjgillot]

I couldn't find where in the demangler code this is used. IIUC, there are only two categories that are checked, 'C' and 'S', the latter not being produced any more. Should I look somewhere else?

https://github.com/rust-lang/rustc-demangle/blob/c5688cfec32d2bd00701836f12beb3560ee015b8/src/v0.rs#L834-L838

[oli-obk]

@rustbot author

Please add a codegen test (which will probably ICE if the compiler is built with debug assertions as the demangler can't support this new syntax yet).

[rustbot]

Reminder, once the PR becomes ready for a review, use @rustbot ready.

[bors]

☔ The latest upstream changes (presumably #144249) made this pull request unmergeable. Please resolve the merge conflicts.

[rustbot]

Some changes occurred in tests/codegen-llvm/sanitizer

cc @rcvalle

[rustbot]

This PR was rebased onto a different master commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.