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Also consider TAIT to be uncomputable if the MIR body is tainted #117416

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merged 1 commit into from
Oct 31, 2023
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Also consider TAIT to be uncomputable if the MIR body is tainted #117416

merged 1 commit into from
Oct 31, 2023

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Not totally sure if this is the best solution. We could, alternatively, look at the hir typeck results and try to take a type from there instead of just falling back to type error, inferring u8 instead of {type error}. Not certain it really matters, though.

Happy to iterate on this.

Fixes #117413

r? @oli-obk cc @Nadrieril

@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 Oct 30, 2023
@compiler-errors compiler-errors mentioned this pull request Oct 30, 2023
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oli-obk commented Oct 31, 2023

I was considering whether to replace the hidden types in the typeck and borrowck results with Error if the results were tainted, but I think it's ok/good to be able to obtain the real type manually if necessary, and only have the canonical type_of path turn it into an error

@bors r+

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bors commented Oct 31, 2023

📌 Commit 48491c1 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 Oct 31, 2023
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Oct 31, 2023
@matthiaskrgr
Rollup merge of rust-lang#117416 - compiler-errors:tait-in-bad-body, …
b7acdff 
…r=oli-obk

Also consider TAIT to be uncomputable if the MIR body is tainted

Not totally sure if this is the best solution. We could, alternatively, look at the hir typeck results and try to take a type from there instead of just falling back to type error, inferring `u8` instead of `{type error}`. Not certain it really matters, though.

Happy to iterate on this.

Fixes rust-lang#117413

r? `@oli-obk` cc `@Nadrieril`
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Oct 31, 2023
@matthiaskrgr
Rollup merge of rust-lang#117418 - compiler-errors:better_error_body,…
8715479 
… r=oli-obk

Build a better MIR body when errors are encountered

Doesn't really have much of an effect on its own, but it does lead to a less confusing phony MIR body being generated when an error is detected during THIR/MIR/match building. This was quite confusing when I hacked `-Zunpretty=mir` to emit `mir_built` rather than `instance_mir`.

This coincidentually also fixes rust-lang#117413, but not as generally as rust-lang#117416.

cc `@Nadrieril`
This was referenced Oct 31, 2023
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bors added a commit to rust-lang-ci/rust that referenced this pull request Oct 31, 2023
@bors
Auto merge of rust-lang#117444 - matthiaskrgr:rollup-43s0spc, r=matth…
045f158 
…iaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang#116267 (Some codegen cleanups around SIMD checks)
 - rust-lang#116712 (When encountering unclosed delimiters during lexing, check for diff markers)
 - rust-lang#117416 (Also consider TAIT to be uncomputable if the MIR body is tainted)
 - rust-lang#117421 (coverage: Replace impossible `coverage::Error` with assertions)
 - rust-lang#117438 (Do not ICE on constant evaluation failure in GVN.)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 8daa317 into rust-lang:master Oct 31, 2023
11 checks passed
@rustbot rustbot added this to the 1.75.0 milestone Oct 31, 2023
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Oct 31, 2023
@rust-timer
Unrolled build for rust-lang#117416
7ebf659 
Rollup merge of rust-lang#117416 - compiler-errors:tait-in-bad-body, r=oli-obk

Also consider TAIT to be uncomputable if the MIR body is tainted

Not totally sure if this is the best solution. We could, alternatively, look at the hir typeck results and try to take a type from there instead of just falling back to type error, inferring `u8` instead of `{type error}`. Not certain it really matters, though.

Happy to iterate on this.

Fixes rust-lang#117413

r? ``@oli-obk`` cc ``@Nadrieril``
@github-actions github-actions bot mentioned this pull request Nov 1, 2023
Merged
bors-ferrocene bot added a commit to ferrocene/ferrocene that referenced this pull request Nov 1, 2023
@bors-ferrocene @poliorcetics
@estebank @dtolnay @celinval @compiler-errors @bors @cjgillot @lcnr @Zalathar @oli-obk
Merge #78
075dd45 
78: Automated pull from upstream `master` r=tshepang a=github-actions[bot]


This PR pulls the following changes from the upstream repository:

* rust-lang/rust#113970
* rust-lang/rust#117459
  * rust-lang/rust#117451
  * rust-lang/rust#117439
  * rust-lang/rust#117417
  * rust-lang/rust#117388
  * rust-lang/rust#113241
* rust-lang/rust#117462
* rust-lang/rust#117450
* rust-lang/rust#117407
* rust-lang/rust#117444
  * rust-lang/rust#117438
  * rust-lang/rust#117421
  * rust-lang/rust#117416
  * rust-lang/rust#116712
  * rust-lang/rust#116267
* rust-lang/rust#117377
* rust-lang/rust#117419



Co-authored-by: Alexis (Poliorcetics) Bourget <[email protected]>
Co-authored-by: Esteban Küber <[email protected]>
Co-authored-by: David Tolnay <[email protected]>
Co-authored-by: Celina G. Val <[email protected]>
Co-authored-by: Michael Goulet <[email protected]>
Co-authored-by: bors <[email protected]>
Co-authored-by: Camille GILLOT <[email protected]>
Co-authored-by: lcnr <[email protected]>
Co-authored-by: Zalathar <[email protected]>
Co-authored-by: Oli Scherer <[email protected]>
@compiler-errors compiler-errors mentioned this pull request Nov 7, 2023
Merged
bors added a commit to rust-lang-ci/rust that referenced this pull request Nov 7, 2023
@bors
Auto merge of rust-lang#117418 - compiler-errors:better_error_body, r…
504f63e 
…=oli-obk

Build a better MIR body when errors are encountered

Doesn't really have much of an effect on its own, but it does lead to a less confusing phony MIR body being generated when an error is detected during THIR/MIR/match building. This was quite confusing when I hacked `-Zunpretty=mir` to emit `mir_built` rather than `instance_mir`.

This coincidentually also fixes rust-lang#117413, but not as generally as rust-lang#117416.

cc `@Nadrieril`
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TAIT: empty match on TAIT confuses typeck
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