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Check for free regions in MIR validation #108786

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merged 1 commit into from
Mar 7, 2023

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@saethlin saethlin commented Mar 5, 2023

This turns #108720 into a MIR validation failure that will reproduce without debug-assertions enabled.

error: internal compiler error: broken MIR in Item(WithOptConstParam { did: DefId(0:296 ~ futures_util[3805]::future::future::remote_handle::{impl#3}::poll), const_param_did: None }) (after pass ScalarReplacementOfAggregates) at bb0[0]:
                                Free regions in optimized runtime-post-cleanup MIR
  --> /home/ben/.cargo/registry/src/git.luolix.top-1ecc6299db9ec823/futures-util-0.3.26/src/future/future/remote_handle.rs:96:13
   |
96 |         let this = self.project();
   |             ^^^^

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rustbot commented Mar 5, 2023

r? @jackh726

(rustbot has picked a reviewer for you, use r? to override)

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Mar 5, 2023
@saethlin saethlin force-pushed the free-regions-check branch from 7eb7bd6 to cb4ebc1 Compare March 5, 2023 18:46
@saethlin saethlin marked this pull request as ready for review March 5, 2023 18:51
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rustbot commented Mar 5, 2023

Some changes occurred to MIR optimizations

cc @rust-lang/wg-mir-opt

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oli-obk commented Mar 6, 2023

@bors r+ rollup

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bors commented Mar 6, 2023

📌 Commit cb4ebc1 has been approved by oli-obk

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 6, 2023
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Mar 6, 2023
…-obk

Check for free regions in MIR validation

This turns rust-lang#108720 into a MIR validation failure that will reproduce without debug-assertions enabled.

```
error: internal compiler error: broken MIR in Item(WithOptConstParam { did: DefId(0:296 ~ futures_util[3805]::future::future::remote_handle::{impl#3}::poll), const_param_did: None }) (after pass ScalarReplacementOfAggregates) at bb0[0]:
                                Free regions in optimized runtime-post-cleanup MIR
  --> /home/ben/.cargo/registry/src/git.luolix.top-1ecc6299db9ec823/futures-util-0.3.26/src/future/future/remote_handle.rs:96:13
   |
96 |         let this = self.project();
   |             ^^^^
```
bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 6, 2023
…iaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#107801 (const_eval: `implies_by` in `rustc_const_unstable`)
 - rust-lang#108750 (Fix `ObligationCtxt::sub`)
 - rust-lang#108780 (Add regression tests for issue 70919)
 - rust-lang#108786 (Check for free regions in MIR validation)
 - rust-lang#108790 (Do not ICE when interpreting a cast between non-monomorphic types)
 - rust-lang#108803 (Do not ICE when failing to normalize in ConstProp.)
 - rust-lang#108807 (Emit the suspicious_auto_trait_impls for negative impls as well)
 - rust-lang#108812 (Add regression test for rust-lang#98444)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 4bd6f7f into rust-lang:master Mar 7, 2023
@rustbot rustbot added this to the 1.70.0 milestone Mar 7, 2023
@saethlin saethlin deleted the free-regions-check branch March 15, 2023 00:33
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5 participants