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Add README files explaining the differentiable programming test suite. Add lit.local.cfg files so individual tests do not need to add `REQUIRES: asserts` in these directories: - test/AutoDiff/compiler_crashers - test/AutoDiff/compiler_crashers_fixed Motivation: it is important for compiler crasher tests to require assertions enabled, because many of these tests crash on compiler assertions.
27 lines
1001 B
Swift
27 lines
1001 B
Swift
// RUN: %target-swift-frontend -typecheck -verify %s
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// SR-12642: Crash regarding `Differentiable` derived conformances and
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// redeclared properties. This crash surfaced only briefly during the
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// implementation of wrapped property differentiation (SR-12637).
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import _Differentiation
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@propertyWrapper
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struct Wrapper<Value> {
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var wrappedValue: Value
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}
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struct Generic<T> {}
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extension Generic: Differentiable where T: Differentiable {}
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struct WrappedProperties: Differentiable {
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@Wrapper var int: Generic<Int>
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// expected-note@-1 {{'int' previously declared here}}
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// expected-note@-2 {{'_int' synthesized for property wrapper backing storage}}
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// expected-warning@-3 {{stored property 'int' has no derivative because 'Generic<Int>' does not conform to 'Differentiable'; add an explicit '@noDerivative' attribute}}
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@Wrapper var int: Generic<Int>
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// expected-error@-1 {{invalid redeclaration of 'int'}}
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// expected-error@-2 {{invalid redeclaration of synthesized property '_int'}}
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}
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