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Do not ICE when failing to normalize in ConstProp. - #108803

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cjgillot:const-prop-normalize
Mar 7, 2023
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Do not ICE when failing to normalize in ConstProp.#108803
bors merged 1 commit into
rust-lang:masterfrom
cjgillot:const-prop-normalize

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@cjgillot

@cjgillot cjgillot commented Mar 6, 2023

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There is no reason to delay a bug there, as we bubble up the failure as TooGeneric.

Fixes #97728

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rustbot commented Mar 6, 2023

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r? @WaffleLapkin

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@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 6, 2023
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rustbot commented Mar 6, 2023

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Some changes occurred to the CTFE / Miri engine

cc @rust-lang/miri

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oli-obk commented Mar 6, 2023

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This was originally added because we couldn't come up with an example where it would fail but not hard error, too (see https://github.com/rust-lang/rust/pull/91551/files#r762550062 )

Even if it's only reachable via const prop, it seems totally fine to not require a hard error.

r? @oli-obk

@bors r+ rollup

@rustbot rustbot assigned oli-obk and unassigned WaffleLapkin Mar 6, 2023
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bors commented Mar 6, 2023

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📌 Commit 8c0cbd8 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
…li-obk

Do not ICE when failing to normalize in ConstProp.

There is no reason to delay a bug there, as we bubble up the failure as TooGeneric.

Fixes rust-lang#97728
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 ab7dd09 into rust-lang:master Mar 7, 2023
@rustbot rustbot added this to the 1.70.0 milestone Mar 7, 2023
@cjgillot
cjgillot deleted the const-prop-normalize branch March 7, 2023 07:35
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ICE: failed to normalize with -Zmir-opt-level=3 --emit-mir

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