interp/validity: enforce Scalar::Initialized

[RalfJung]

This is a follow-up to #94527, to also account for the new kind of Scalar layout inside the validity checker.

r? @oli-obk

[rust-highfive]

Some changes occured to the CTFE / Miri engine

cc @rust-lang/miri

[oli-obk]

@bors r+ rollup

[bors]

📌 Commit d214b38 has been approved by oli-obk

[bors]

⌛ Testing commit d214b38 with merge 9581fd9a6d279538e7b1841a82a608a77a346282...

[bors]

💔 Test failed - checks-actions

[rust-log-analyzer]

The job x86_64-msvc-1 failed! Check out the build log: (web)(plain)

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

Some tests failed in compiletest suite=ui-fulldeps mode=ui host=x86_64-pc-windows-msvc target=x86_64-pc-windows-msvc
error: test run failed!
status: exit code: 101
command: PATH="D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage2\lib\rustlib\x86_64-pc-windows-msvc\lib;C:\Program Files (x86)\Windows Kits\10\bin\x64;C:\Program Files (x86)\Windows Kits\10\bin\10.0.22000.0\x64;C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\bin\HostX64\x64;C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\bin\HostX64\x64;D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage0-bootstrap-tools\x86_64-pc-windows-msvc\release\deps;D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage0\bin;D:\a\rust\rust\ninja;D:\a\rust\rust\msys2\mingw64\bin;C:\hostedtoolcache\windows\Python\3.10.4\x64\Scripts;C:\hostedtoolcache\windows\Python\3.10.4\x64;C:\msys64\usr\bin;D:\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\2.7.5\x64;C:\cabal\bin;C:\ghcup\bin;C:\tools\ghc-9.2.2\bin;C:\Program Files\dotnet;C:\mysql\bin;C:\Program Files\R\R-4.1.3\bin\x64;C:\SeleniumWebDrivers\GeckoDriver;C:\Program Files (x86)\sbt\bin;C:\Program Files (x86)\GitHub CLI;C:\Program Files\Git\bin;C:\Program Files (x86)\pipx_bin;C:\hostedtoolcache\windows\go\1.15.15\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:\tools\kotlinc\bin;C:\hostedtoolcache\windows\Java_Temurin-Hotspot_jdk\8.0.322-6\x64\bin;C:\npm\prefix;C:\Program Files (x86)\Microsoft SDKs\Azure\CLI2\wbin;C:\ProgramData\kind;C:\Program Files\Eclipse Foundation\jdk-8.0.302.8-hotspot\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\ProgramData\Chocolatey\bin;C:\Program Files\Docker;C:\Program Files\PowerShell\7;C:\Program Files\Microsoft\Web Platform Installer;C:\Program Files\dotnet;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\nodejs;C:\Program Files\OpenSSL\bin;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-3.8.5\bin;C:\Program Files\Microsoft Service Fabric\bin\Fabric\Fabric.Code;C:\Program Files\Microsoft SDKs\Service Fabric\Tools\ServiceFabricLocalClusterManager;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:\SeleniumWebDrivers\ChromeDriver;C:\SeleniumWebDrivers\EdgeDriver;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" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-msvc\\test\\ui-fulldeps\\stdio-from\\a.exe"
stdout: none
--- stderr -------------------------------
I/O error: operation failed to complete synchronously
thread 'main' panicked at 'assertion failed: child2.wait()?.success()', D:\a\rust\rust\src/test\ui-fulldeps\stdio-from.rs:50:5
------------------------------------------
failures:
[ui] ui-fulldeps\stdio-from.rs
test result: FAILED. 65 passed; 1 failed; 1 ignored; 0 measured; 0 filtered out; finished in 25.32s
Build completed unsuccessfully in 0:35:41
make: *** [Makefile:72: ci-subset-1] Error 1

[RalfJung]

@bors retry "I/O error: operation failed to complete synchronously"

[bors]

⌛ Testing commit d214b38 with merge b6ab1fa...

[bors]

☀️ Test successful - checks-actions
Approved by: oli-obk
Pushing b6ab1fa to master...

[rust-timer]

Finished benchmarking commit (b6ab1fa): comparison url.

Summary:

• Primary benchmarks: changes not relevant. 2 results were found to be statistically significant but the changes were too small to be relevant.
• Secondary benchmarks: 😿 relevant regressions found

	Regressions 😿 (primary)	Regressions 😿 (secondary)	Improvements 🎉 (primary)	Improvements 🎉 (secondary)	All 😿 🎉 (primary)
count1	2	6	0	1	2
mean2	0.3%	1.1%	N/A	-0.3%	0.3%
max	0.4%	1.3%	N/A	-0.3%	0.4%

If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf.

Next Steps: If you can justify the regressions found in this perf run, please indicate this with @rustbot label: +perf-regression-triaged along with sufficient written justification. If you cannot justify the regressions please open an issue or create a new PR that fixes the regressions, add a comment linking to the newly created issue or PR, and then add the perf-regression-triaged label to this PR.

@rustbot label: +perf-regression

Footnotes

1. number of relevant changes↩

2. the arithmetic mean of the percent change↩

[Mark-Simulacrum]

Marking as triaged per #95680 (comment).