[9.0] WASM: Precompiling failed for C:\...\*.dll with exit code -1073741819

[jozkee]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1036224
Build error leg or test failing: Wasm.Build.NativeRebuild.Tests.FlagsChangeRebuildTests.ExtraEmccFlagsSetButNoRealChange
Pull request: #115385

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "",
  "ErrorPattern": "Precompiling failed for .+? with exit code -1073741819",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Found in #115385.
Console logs:

1. https://helixr1107v0xd1eu3ibi6ka.blob.core.windows.net/dotnet-runtime-refs-pull-115385-merge-3e6cb41af16e448e99/Workloads-ST-Wasm.Build.NativeRebuild.Tests.FlagsChangeRebuildTests/1/console.cafdcb36.log?helixlogtype=result
2. https://helixr1107v0xd1eu3ibi6ka.blob.core.windows.net/dotnet-runtime-refs-pull-115385-merge-3e6cb41af16e448e99/Workloads-ST-Wasm.Build.NativeRebuild.Tests.NoopNativeRebuildTest/1/console.60192f07.log?helixlogtype=result

Looks similar to #115203, maybe just need the fix backported to release/9.0-staging?
cc @lewing

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1036224
Error message validated: [Precompiling failed for *with exit code -1073741819]
Result validation: ❌ Known issue did not match with the provided build.
Validation performed at: 5/8/2025 6:59:44 PM UTC

Report

Build	Definition	Test	Pull Request
1036224	dotnet/runtime	Wasm.Build.Tests.WasmTemplateTests.ConsolePublishAndRun	#115385

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
1	1	1

Report

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	0

[dotnet-policy-service]

Tagging subscribers to 'arch-wasm': @lewing
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[lewing]

It is an llvm crash, will investigate