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Auto merge of #115486 - compiler-errors:dont-capture-late-pls, r=cjgillot

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Correctly deny late-bound lifetimes from parent in anon consts and TAITs

Reuse the `AnonConstBoundary` scope (introduced in #108553, renamed in this PR to `LateBoundary`) to deny late-bound vars of *all* kinds (ty/const/lifetime) in anon consts and TAITs.

Side-note, but I would like to consolidate this with the error reporting for RPITs (E0657):
c4f25777a0/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs (L733-L754) but the semantics about what we're allowed to capture there are slightly different, so I'm leaving that untouched.

Fixes #115474
This commit is contained in:
bors 2023-09-20 03:34:51 +00:00
commit 4b91288484
22 changed files with 268 additions and 150 deletions
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4
compiler/rustc_hir_analysis/src/astconv/mod.rs
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@ -268,9 +268,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
// (*) -- not late-bound, won't change
}
Some(rbv::ResolvedArg::Error(_)) => {
bug!("only ty/ct should resolve as ResolvedArg::Error")
}
Some(rbv::ResolvedArg::Error(guar)) => ty::Region::new_error(tcx, guar),
None => {
self.re_infer(def, lifetime.ident.span).unwrap_or_else(|| {