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Associated type redeclarations occasionally occur to push around associated type witness inference. Suppress the warning about redeclarations that add no requirements (i.e., have neither an inheritance nor a where clause).
21 lines
636 B
Swift
21 lines
636 B
Swift
// RUN: %target-typecheck-verify-swift
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// rdar://problem/23149063
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protocol P0 { }
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protocol P {
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associatedtype A
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}
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protocol Q : P {
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associatedtype A
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}
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func f<T>(t: T) where T : P, T : Q, T.A : P0 { } // expected-note{{'f(t:)' previously declared here}}
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// expected-warning@-1{{redundant conformance constraint 'T': 'P'}}
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// expected-note@-2{{conformance constraint 'T': 'P' implied here}}
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func f<T>(t: T) where T : Q, T : P, T.A : P0 { } // expected-error{{invalid redeclaration of 'f(t:)'}}
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// expected-warning@-1{{redundant conformance constraint 'T': 'P'}}
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// expected-note@-2{{conformance constraint 'T': 'P' implied here}}
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