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Rollup merge of #98705 - WaffleLapkin:closure_binder, r=cjgillot

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Implement `for<>` lifetime binder for closures

This PR implements RFC 3216 ([TI](https://github.com/rust-lang/rust/issues/97362)) and allows code like the following:

```rust
let _f = for<'a, 'b> |a: &'a A, b: &'b B| -> &'b C { b.c(a) };
//       ^^^^^^^^^^^--- new!
```

cc ``@Aaron1011`` ``@cjgillot``
This commit is contained in:
Dylan DPC 2022-07-14 14:14:21 +05:30 • committed by GitHub
commit e5a86d7358
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91 changed files with 843 additions and 208 deletions
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2
compiler/rustc_save_analysis/src/dump_visitor.rs
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@ -1353,7 +1353,7 @@ impl<'tcx> Visitor<'tcx> for DumpVisitor<'tcx> {
}
}
}
hir::ExprKind::Closure { ref fn_decl, body, .. } => {
hir::ExprKind::Closure(&hir::Closure { ref fn_decl, body, .. }) => {
let id = format!("${}", ex.hir_id);
// walk arg and return types