| // RUN: %target-typecheck-verify-swift -swift-version 4 |
| |
| // Swift 3 used default literal types even for normal protocol constraints, |
| // which led to nonsensical type inference behavior. |
| |
| // expected-note@+1{{in call to function 'f'}} |
| func f<T: ExpressibleByIntegerLiteral>(_: T = 0) { } |
| |
| f() // expected-error{{generic parameter 'T' could not be inferred}} |
| |
| // expected-note@+1{{'T' declared as parameter to type 'X'}} |
| struct X<T: ExpressibleByIntegerLiteral> { |
| func g() { } |
| } |
| |
| X().g() // expected-error{{generic parameter 'T' could not be inferred}} |
| // expected-note@-1{{explicitly specify the generic arguments to fix this issue}} |
