Don't ICE when reporting borrowck errors involving regions from anonymous_lifetime_in_impl_trait
#103382
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| error[E0521]: borrowed data escapes outside of closure | ||
| --> $DIR/anonymous-region-in-apit.rs:8:17 | ||
| | | ||
| LL | fn qux(foo: impl Foo<&str>) { |
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Is there any easy way to get the def_id of the lifetime itself and point to it?
r=me if not.
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No, as far as I understand it, the way that borrowck does it requires walking through HIR, and I didn't want to reinvent that for just this case.
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…n-ice, r=cjgillot
Don't ICE when reporting borrowck errors involving regions from `anonymous_lifetime_in_impl_trait`
The issue here is that when we have:
```
trait Trait<'a> { .. }
fn foo(arg: impl Trait) { .. }
```
The anonymous lifetime `'_` that we generate for `arg: impl Trait` doesn't end up in the argument type (which is a param) but in a where-clause of the function, in a predicate whose self type is that param ty.
Fixes rust-lang#101660
r? `@cjgillot`
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Rollup of 11 pull requests Successful merges: - rust-lang#103333 (Fix assertion failed for break_last_token and trailing token) - rust-lang#103350 (Change terminology for assoc method suggestions when they are not called) - rust-lang#103382 (Don't ICE when reporting borrowck errors involving regions from `anonymous_lifetime_in_impl_trait`) - rust-lang#103409 (Delay span bug when we can't map lifetimes back in `collect_trait_impl_trait_tys`) - rust-lang#103410 (-Z docs: Add link to unstable book) - rust-lang#103462 (rustdoc: remove no-op CSS `.source pre.rust { white-space: pre }`) - rust-lang#103465 (E0210 explanation: remove redundant sentence) - rust-lang#103486 (Use functions in highlight-colors rustdoc GUI test) - rust-lang#103493 (rustdoc: remove unused `.sidebar-logo` DOM on source pages) - rust-lang#103494 (rustdoc: remove redundant CSS `a.test-arrow:hover`) - rust-lang#103495 (rustdoc: Use `unix_sigpipe` instead of `rustc_driver::set_sigpipe_handler`) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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The issue here is that when we have:
The anonymous lifetime
'_that we generate forarg: impl Traitdoesn't end up in the argument type (which is a param) but in a where-clause of the function, in a predicate whose self type is that param ty.Fixes #101660
r? @cjgillot