| // RUN: %target-swift-frontend -typecheck -verify %s |
| // REQUIRES: asserts |
| |
| // TF-1167: `OverrideMatcher::match` crash due to meaningless assertion: |
| // `assert(false)`. The assertion was triggered when parameter indices |
| // could not be resolved for neither base nor derived declaration |
| // `@differentiable` attributes. |
| // |
| // `import _Differentiation` is intentionally omitted from this test case. |
| |
| public protocol Base { |
| associatedtype Input |
| // expected-error @+1 {{cannot find type 'Differentiable' in scope}} |
| associatedtype Output: Differentiable |
| |
| // expected-error @+1 {{@differentiable attribute used without importing module '_Differentiation'}} |
| @differentiable(wrt: self) |
| func callAsFunction(_ input: Input) -> Output |
| } |
| public protocol Derived: Base { |
| // expected-error @+1 {{@differentiable attribute used without importing module '_Differentiation'}} |
| @differentiable |
| func callAsFunction(_ input: Input) -> Output |
| } |
