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Specializations are implementation details, and thus shouldn't be public, even if they are specializing a public function. Without this downgrade, the ABI of a module depends on random internal code (could change inlining decisions etc.), as well as swiftc's optimiser.
24 lines
669 B
Swift
24 lines
669 B
Swift
// RUN: %target-swift-frontend -sil-serialize-all -O -parse-stdlib -parse-as-library -emit-sil %s | %FileCheck %s
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// Make sure specialization of stdlib_binary_only functions are not marked
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// shared. Marking them shared would make their visibility hidden. Because
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// stdlib_binary_only implies public external linkage in other modules we would
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// get linking errors.
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@_silgen_name("unknown")
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public func unknown() -> ()
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@inline(never)
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@_semantics("stdlib_binary_only")
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public func doSomething3<T>(_ a:T) {
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unknown()
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}
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struct A {}
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@inline(never)
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public func callDoSomething3() {
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doSomething3(A())
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}
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// CHECK-NOT: sil {{.*}}shared{{.*}} {{.*}}12doSomething3
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