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// RUN: %target-swift-frontend -emit-sil -verify %s
// XFAIL: *
// rdar://87429620
// https://github.com/apple/swift/issues/54819
// Differentiable curry thunk RequirementMachine error
import _Differentiation
public struct Struct<Scalar> {
var x: Scalar
}
extension Struct: Differentiable where Scalar: Differentiable {
@differentiable(reverse)
public static func id(x: Self) -> Self {
return x
}
}
@differentiable(reverse, wrt: x)
public func f<Scalar: Differentiable>(
_ x: Struct<Scalar>,
reduction: @differentiable(reverse) (Struct<Scalar>) -> Struct<Scalar> = Struct.id
) -> Struct<Scalar> {
reduction(x)
}
// Invalid type parameter in getCanonicalTypeInContext()
// Original type: τ_0_0.TangentVector
// Simplified term: τ_0_0.[Differentiable:TangentVector]
// Longest valid prefix: τ_0_0
// Prefix type: τ_0_0
//
// Requirement machine for <τ_0_0, τ_0_1, τ_0_2, τ_0_3 where τ_0_0 == τ_0_1, τ_0_2 == τ_0_3>
// Rewrite system: {
// - τ_0_1 => τ_0_0 [explicit]
// - τ_0_3 => τ_0_2 [explicit]
// }
// Rewrite loops: {
// }
// Property map: {
// }
// Conformance access paths: {
// }
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