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08940882c8
This code got refactored and it accidentally widened the applicable structures for this check. The idea is that you have the following structure // Module A @_weakLinked import B // Module B @_exported import C And the compiler conspires to make it so the modules B AND C wind up weak-linked from module A. The broadened check accidentally allowed the following: // Module A @_weakLinked import B // Module B import C // Oops! Which caused quite a few more modules than were intended to be weak-linked. Restore the `Exported` filter to cut back on the amount of weak re-exports the compiler processes. Resolves rdar://142706779
21 lines
1.3 KiB
Swift
21 lines
1.3 KiB
Swift
// REQUIRES: objc_interop, OS=macosx
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// RUN: %empty-directory(%t)
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//
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// RUN: %target-swift-frontend -emit-module -emit-module-path %t/weaklinked_import_helper.swiftmodule -parse-as-library %S/Inputs/weaklinked_import_helper.swift -enable-library-evolution
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//
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// RUN: echo 'import Foundation' > %t/intermediate_foundation.swift
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// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -emit-module -emit-module-path %t/intermediate_foundation.swiftmodule -parse-as-library %t/intermediate_foundation.swift -I %t -enable-library-evolution
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//
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// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -primary-file %s -I %t -emit-ir -Xcc -fmodule-map-file=%S/Inputs/weaklinked_import_helper_clang.modulemap | %FileCheck %s
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@_weakLinked import intermediate_foundation
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import Foundation
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// ThisModule -weak imports-> intermediate_foundation -imports-> Foundation
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// Because Foundation is _not_ re-exported, make sure any symbols from it are strongly referenced.
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// CAUTION: Suppose you _want_ Foundation to be weak-linked. It's not enough to just `@_exported import Foundation`
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// in the intermediate_foundation module. That only gets you the Swift half of the Foundation overlay.
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// CHECK-DAG: @"OBJC_CLASS_$_NSNotification" = external global %objc_class
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_ = NSNotification()
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