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[SR-14714] Builds with non-swift/main Clang fail with unknown LLVM argument #57064

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typesanitizer opened this issue Jun 3, 2021 · 1 comment
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[SR-14714] Builds with non-swift/main Clang fail with unknown LLVM argument #57064

typesanitizer opened this issue Jun 3, 2021 · 1 comment
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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Previous ID SR-14714
Radar None
Original Reporter @typesanitizer
Type Bug
Status Closed
Resolution Done
Additional Detail from JIRA
Votes 0
Component/s
Labels Bug
Assignee @typesanitizer
Priority Medium

md5: fd5b0bc5b599c610309ca3d2800d24e4

Issue Description:

There was a new LLVM flag added recently.

-enable-swifttailcc-musttail-check

This creates a problem when building the project with --xcode since that uses the toolchain compiler, which doesn't support that LLVM flag (it's a new flag).

This issue doesn't arise with the Ninja build, since it uses the locally built Clang, unless SWIFT_BUILD_RUNTIME_WITH_HOST_COMPILER is set to TRUE.

See #36805 for more discussion. We should probably back out passing that flag until we can figure out a more robust solution.
@typesanitizer
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Revert PRs: swift: #37752 swift-driver: apple/swift-driver#695

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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@typesanitizer typesanitizer

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior.
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