| // RUN: %target-swift-frontend -typecheck -verify %s |
| |
| // SWIFT_ENABLE_TENSORFLOW |
| // Expected to fail on `tensorflow` branch because the `Differentiable` protocol |
| // currently exists in the core stdlib, not in the `_Differentiation` module. |
| // XFAIL: tensorflow |
| // SWIFT_ENABLE_TENSORFLOW END |
| |
| // Tests that Sema fails gracefully when the `_Differentiation` module is not imported. |
| |
| // expected-error @+1 {{'@differentiable' attribute used without importing module '_Differentiation'}} |
| let _: @differentiable (Float) -> Float |
| |
| // expected-error @+1 2 {{'@differentiable' attribute used without importing module '_Differentiation'}} |
| func hasDifferentiableFunctionArg<T>(_ f: @differentiable (T) -> T) {} |
