Delay span bug when we can't map lifetimes back in collect_trait_impl_trait_tys
#103409
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r? @lcnr (rust-highfive has picked a reviewer for you, use r? to override) |
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| = note: expected `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>>` | ||
| found `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>>` |
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This error kinda sucks, but it's not really RPITIT's fault.
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This needs blessing after #103414 lands |
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…jgillot Pretty print lifetimes captured by RPIT This specifically makes the output in rust-lang#103409 change from: ```diff error: `impl` item signature doesn't match `trait` item signature --> $DIR/signature-mismatch.rs:15:5 | LL | fn async_fn(&self, buff: &[u8]) -> impl Future<Output = Vec<u8>>; | ----------------------------------------------------------------- expected `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>>` ... LL | fn async_fn<'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a { - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ found `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>>` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ found `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>> + '2` | = note: expected `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>>` - found `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>>` + found `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>> + '2` = help: the lifetime requirements from the `impl` do not correspond to the requirements in the `trait` = help: verify the lifetime relationships in the `trait` and `impl` between the `self` argument, the other inputs and its output error: aborting due to previous error ``` Along with the UI tests in this PR, which I think are all improvements! r? `@oli-obk` though feel free to re-roll
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…ismatch, r=lcnr Delay span bug when we can't map lifetimes back in `collect_trait_impl_trait_tys` When a lifetime is late-bound in a trait signature, but early-bound in an impl signature, we already emit an error -- however, we also ICE in `collect_trait_impl_trait_tys`, so just delay a bug here. Fixes rust-lang#103407
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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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When a lifetime is late-bound in a trait signature, but early-bound in an impl signature, we already emit an error -- however, we also ICE in
collect_trait_impl_trait_tys, so just delay a bug here.Fixes #103407