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The implementation of `withoutActuallyEscaping` for `@convention(block)` functions cannot verify at runtime that the function did not actually escape. Diagnose this as unsafe code under strict memory safety checking. Fixes rdar://139994149.
20 lines
638 B
Swift
20 lines
638 B
Swift
// RUN: %target-typecheck-verify-swift -strict-memory-safety
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// REQUIRES: objc_interop
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func callMe(body: @escaping @convention(block) () -> Void) { }
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func callMeSwiftly(body: @escaping () -> Void) { }
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func testCall(body: @convention(block) () -> Void, swiftBody: () -> Void) {
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// expected-warning@+2{{unsafe}}{{3-3=unsafe }}
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// expected-note@+1{{'withoutActuallyEscaping' function of type '@convention(block) () -> Void' is unsafe}}
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withoutActuallyEscaping(body) { nonescapingBody in
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callMe(body: nonescapingBody)
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}
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withoutActuallyEscaping(swiftBody) { nonescapingBody in
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callMeSwiftly(body: nonescapingBody)
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}
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}
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