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https://github.com/apple/swift.git
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Doug Gregor
48e60681f9
Under interface-LTO the Synchronization library's archive holds real code that clients must link against; under the default Inlinable model it's empty. Introduce a lit substitution that always adds `-lswiftSynchronization` and thread it through every executable embedded test that `import`s Synchronization. Harmless under default codegen (the archive is empty), load-bearing under interface-LTO.
38 lines
973 B
Swift
38 lines
973 B
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -parse-as-library -enable-experimental-feature Embedded -disable-availability-checking -wmo %s -c -o %t/main.o
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// RUN: %target-embedded-link %target-clang-resource-dir-opt %t/main.o %target-embedded-multi-threaded-posix-shim %target-embedded-synchronization -o %t/a.out -dead_strip
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// RUN: %target-run %t/a.out | %FileCheck %s
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// REQUIRES: executable_test
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// REQUIRES: optimized_stdlib
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// REQUIRES: synchronization
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// REQUIRES: OS=macosx || OS=linux-gnu || OS=wasip1
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// REQUIRES: swift_feature_Embedded
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import Synchronization
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@main
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struct Main {
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static func main() {
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let mutex = Mutex(0)
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let first = mutex.withLock { value -> Int in
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value += 1
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return value
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}
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print(first)
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// CHECK: 1
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let second = mutex.withLockIfAvailable { value -> Int in
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value += 41
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return value
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}
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print(second ?? -1)
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// CHECK: 42
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print("done")
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// CHECK: done
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}
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}
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