fallback `default` to `None` during ast-lowering for lifetime binder #119042

bvanjoi · 2023-12-17T10:51:05Z

This is another attempt. It has a fallback, setting default to None and emit an error for non-lifetime binders during ast lowering.

r? @compiler-errors

compiler/rustc_parse/src/parser/ty.rs

compiler-errors

Please move this to ast validation or some post-macro-expansion pass.

bvanjoi · 2023-12-18T08:49:17Z

I'm pretty sure that this PR will cause the following code to go from pass to fail: ....

Yes, I agree with this, and it's a great catch.

move this to ast validation

But I'm curious about how we can change the default in GenericParamKind::Type from Some(xxx) to None because the validation is simply a visit and can't modify the ast.

bvanjoi · 2023-12-21T03:37:43Z

I have shifted this process into the AST lowering stage: if the default value is not empty, it will raise an error and fall back to None.

compiler/rustc_ast_lowering/src/lib.rs

bvanjoi · 2023-12-21T12:35:26Z

ci is green. @rustbot ready

compiler-errors

r=me after leaving a comment

compiler/rustc_ast_lowering/src/lib.rs

compiler-errors · 2023-12-25T22:13:43Z

@bors r+

bors · 2023-12-25T22:13:46Z

📌 Commit 873ed19 has been approved by compiler-errors

It is now in the queue for this repository.

bvanjoi · 2023-12-26T09:30:48Z

@rustbot ready

compiler-errors · 2023-12-26T12:56:58Z

@bors r+

bors · 2023-12-26T12:57:01Z

📌 Commit e16efbd has been approved by compiler-errors

It is now in the queue for this repository.

bors · 2023-12-26T14:25:24Z

⌛ Testing commit e16efbd with merge fb3598d...

fallback `default` to `None` during ast-lowering for lifetime binder Fixes rust-lang#118697 This is another attempt. It has a fallback, setting `default` to `None` and emit an error for non-lifetime binders during ast lowering. r? `@compiler-errors`

rust-log-analyzer · 2023-12-26T15:30:03Z

The job x86_64-mingw failed! Check out the build log: (web) (plain)

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failures:

---- [rustdoc] tests\rustdoc\inline_cross\sugar-closure-crate-21801.rs stdout ----

error: rustdoc failed!
status: exit code: 0xc00000fd
command: PATH="C:\a\rust\rust\build\x86_64-pc-windows-gnu\stage2\bin;C:\a\rust\rust\build\x86_64-pc-windows-gnu\stage0-bootstrap-tools\x86_64-pc-windows-gnu\release\deps;C:\a\rust\rust\build\x86_64-pc-windows-gnu\stage0\bin;C:\a\rust\rust\ninja;C:\a\rust\rust\mingw64\bin;C:\hostedtoolcache\windows\Python\3.12.1\x64\Scripts;C:\hostedtoolcache\windows\Python\3.12.1\x64;C:\msys64\usr\bin;C:\a\rust\rust\sccache;C:\Program Files\MongoDB\Server\5.0\bin;C:\aliyun-cli;C:\vcpkg;C:\cf-cli;C:\Program Files (x86)\NSIS;C:\tools\zstd;C:\Program Files\Mercurial;C:\hostedtoolcache\windows\stack\2.13.1\x64;C:\cabal\bin;C:\ghcup\bin;C:\mingw64\bin;C:\Program Files\dotnet;C:\Program Files\MySQL\MySQL Server 5.7\bin;C:\Program Files\R\R-4.3.2\bin\x64;C:\SeleniumWebDrivers\GeckoDriver;C:\SeleniumWebDrivers\EdgeDriver;C:\SeleniumWebDrivers\ChromeDriver;C:\Program Files (x86)\sbt\bin;C:\Program Files (x86)\GitHub CLI;C:\Program Files\Git\bin;C:\Program Files (x86)\pipx_bin;C:\npm\prefix;C:\hostedtoolcache\windows\go\1.20.12\x64\bin;C:\hostedtoolcache\windows\Python\3.7.9\x64\Scripts;C:\hostedtoolcache\windows\Python\3.7.9\x64;C:\hostedtoolcache\windows\Ruby\2.5.9\x64\bin;C:\Program Files\OpenSSL\bin;C:\tools\kotlinc\bin;C:\hostedtoolcache\windows\Java_Temurin-Hotspot_jdk\8.0.392-8\x64\bin;C:\Program Files\ImageMagick-7.1.1-Q16-HDRI;C:\Program Files\Microsoft SDKs\Azure\CLI2\wbin;C:\ProgramData\kind;C:\Program Files\Eclipse Foundation\jdk-8.0.302.8-hotspot\bin;C:\ProgramData\Chocolatey\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Program Files\PowerShell\7;C:\Program Files\Microsoft\Web Platform Installer;C:\Program Files\Microsoft SQL Server\130\Tools\Binn;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn;C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit;C:\Program Files (x86)\Microsoft SQL Server\110\DTS\Binn;C:\Program Files (x86)\Microsoft SQL Server\120\DTS\Binn;C:\Program Files (x86)\Microsoft SQL Server\130\DTS\Binn;C:\Program Files (x86)\Microsoft SQL Server\140\DTS\Binn;C:\Program Files (x86)\Microsoft SQL Server\150\DTS\Binn;C:\Program Files (x86)\Microsoft SQL Server\160\DTS\Binn;C:\Strawberry\c\bin;C:\Strawberry\perl\site\bin;C:\Strawberry\perl\bin;C:\ProgramData\chocolatey\lib\pulumi\tools\Pulumi\bin;C:\Program Files\TortoiseSVN\bin;C:\Program Files\CMake\bin;C:\ProgramData\chocolatey\lib\maven\apache-maven-3.8.7\bin;C:\Program Files\Microsoft Service Fabric\bin\Fabric\Fabric.Code;C:\Program Files\Microsoft SDKs\Service Fabric\Tools\ServiceFabricLocalClusterManager;C:\Program Files\nodejs;C:\Program Files\Git\cmd;C:\Program Files\Git\mingw64\bin;C:\Program Files\Git\usr\bin;C:\Program Files\GitHub CLI;C:\tools\php;C:\Program Files (x86)\sbt\bin;C:\Program Files\Amazon\AWSCLIV2;C:\Program Files\Amazon\SessionManagerPlugin\bin;C:\Program Files\Amazon\AWSSAMCLI\bin;C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\bin;C:\Program Files (x86)\Microsoft BizTalk Server;C:\Program Files\LLVM\bin;C:\Users\runneradmin\.dotnet\tools;C:\Users\runneradmin\.cargo\bin;C:\Users\runneradmin\AppData\Local\Microsoft\WindowsApps" "C:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnu\\stage2\\bin\\rustdoc.exe" "-L" "C:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnu\\stage2\\lib\\rustlib\\x86_64-pc-windows-gnu\\lib" "-L" "C:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnu\\test\\rustdoc\\inline_cross\\sugar-closure-crate-21801\\auxiliary" "-o" "C:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnu\\test\\rustdoc\\inline_cross\\sugar-closure-crate-21801" "--deny" "warnings" "C:\\a\\rust\\rust\\tests\\rustdoc\\inline_cross\\sugar-closure-crate-21801.rs" "-A" "internal_features"
--- stderr -------------------------------

thread 'main' has overflowed its stack
------------------------------------------

bors · 2023-12-26T15:30:36Z

💔 Test failed - checks-actions

bvanjoi · 2023-12-26T15:54:15Z

The job x86_64-mingw failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

This appears to be unrelated to the current change...

fmease · 2023-12-26T16:03:08Z

@bors retry

bors · 2023-12-26T17:30:45Z

⌛ Testing commit e16efbd with merge a75fed7...

bors · 2023-12-26T19:27:43Z

☀️ Test successful - checks-actions
Approved by: compiler-errors
Pushing a75fed7 to master...

rust-timer · 2023-12-26T20:49:51Z

Finished benchmarking commit (a75fed7): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

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	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	2.3%	[2.2%, 2.4%]	2
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

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Bootstrap: 670.607s -> 671.414s (0.12%)
Artifact size: 312.44 MiB -> 312.42 MiB (-0.01%)

…ompiler-errors Deny defaults for higher-ranked generic parameters Fixes rust-lang#119489 (incl. rust-lang#119489 (comment)). Partially reverts rust-lang#119042. cc `@bvanjoi` r? `@compiler-errors` or compiler

…ompiler-errors Deny defaults for higher-ranked generic parameters Fixes rust-lang#119489 (incl. rust-lang#119489 (comment)). Partially reverts rust-lang#119042. cc ``@bvanjoi`` r? ``@compiler-errors`` or compiler

…ompiler-errors Deny defaults for higher-ranked generic parameters Fixes rust-lang#119489 (incl. rust-lang#119489 (comment)). Partially reverts rust-lang#119042. cc ```@bvanjoi``` r? ```@compiler-errors``` or compiler

Rollup merge of rust-lang#119494 - fmease:deny-hr-param-defaults, r=compiler-errors Deny defaults for higher-ranked generic parameters Fixes rust-lang#119489 (incl. rust-lang#119489 (comment)). Partially reverts rust-lang#119042. cc ```@bvanjoi``` r? ```@compiler-errors``` or compiler

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bvanjoi force-pushed the fix-118697-2 branch from 985c57d to dd8809c Compare December 21, 2023 03:37

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bvanjoi changed the title ~~fallback default to None during parse late-bound lifetime~~ fallback default to None during ast-loweing for lifetime binder Dec 23, 2023

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bvanjoi changed the title ~~fallback default to None during ast-loweing for lifetime binder~~ fallback default to None during ast-loweing for lifetime binder Dec 23, 2023

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bvanjoi changed the title ~~fallback default to None during ast-loweing for lifetime binder~~ fallback default to None during ast-loweing for lifetime binder Dec 23, 2023

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bvanjoi force-pushed the fix-118697-2 branch from dd8809c to 873ed19 Compare December 23, 2023 07:59

bvanjoi mentioned this pull request Dec 23, 2023

create LifetimeRes::Fresh firstly when lower lifetime binder #119021

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fmease changed the title ~~fallback default to None during ast-loweing for lifetime binder~~ fallback default to None during ast-lowering for lifetime binder Dec 26, 2023

bvanjoi force-pushed the fix-118697-2 branch from 873ed19 to e16efbd Compare December 26, 2023 08:13

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bors merged commit a75fed7 into rust-lang:master Dec 26, 2023
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ICE: no entry found for key, expr.rs #119489

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fallback `default` to `None` during ast-lowering for lifetime binder #119042

fallback `default` to `None` during ast-lowering for lifetime binder #119042

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fallback default to None during ast-lowering for lifetime binder #119042

fallback default to None during ast-lowering for lifetime binder #119042

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Overall result: no relevant changes - no action needed

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fallback `default` to `None` during ast-lowering for lifetime binder #119042

fallback `default` to `None` during ast-lowering for lifetime binder #119042

bvanjoi commented Dec 17, 2023 •

edited