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24fa9c8703
The warnings that ClangImporter emits about issues it encounters while importing declarations from Clang modules should all belong to a diagnostic group so that users of `-warnings-as-errors` can control their behavior using the compiler flags introduce with SE-0443. It's especially important that these diagnostics be controllable since they are often caused by external dependencies and therefore the developer may not have any control over whether they are emitted. The `#ClangDeclarationImport` diagnostic group is intentionally broad so that developers have a way to control all of these diagnostics with a single `-Wwarning` flag. I fully expect that we'll introduce finer-grained diagnostic groups for some of these diagnostics in the future, but those groups should be hierarchically nested under `#ClangDeclarationImport`, which is supported by SE-0443. Resolves rdar://150524204.
11 lines
533 B
Swift
11 lines
533 B
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -import-objc-header %S/Inputs/DoubleMainActor.h -emit-module -module-name use %s 2> %t/stderr.txt
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// RUN: %FileCheck -input-file %t/stderr.txt %s
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// REQUIRES: concurrency
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// REQUIRES: objc_interop
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// CHECK: DoubleMainActor.h:{{[0-9]+}}:{{[0-9]+}}: warning: this attribute for global actor '@MainActor' is invalid; the declaration already has attribute for global actor '@UIActor' [#ClangDeclarationImport]
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protocol P : DoubleMainActor {}
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