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// RUN: %target-swift-frontend -typecheck -verify %s -debug-generic-signatures 2>&1 | %FileCheck %s
protocol P1 {
associatedtype T where T == Int
}
protocol P2 {
associatedtype T where T == String
}
protocol P3 {
associatedtype T where T == Float
}
// We end up with two redundant rules:
//
// [P4:T].[P1:T].[concrete: String]
// [P4:T].[P1:T].[concrete: Float]
//
// These rules are unordered with respect to each other because concrete type
// symbols are incomparable, but they conflict so we should not compare them;
// just make sure we don't crash.
// CHECK-LABEL: .P4@
// CHECK-LABEL: Requirement signature: <Self where Self.[P4]T : P1, Self.[P4]T : P2, Self.[P4]T : P3>
// expected-error@+3{{no type for 'Self.T.T' can satisfy both 'Self.T.T == String' and 'Self.T.T == Int'}}
// expected-error@+2{{no type for 'Self.T.T' can satisfy both 'Self.T.T == Float' and 'Self.T.T == Int'}}
// expected-error@+1{{no type for 'Self.T.T' can satisfy both 'Self.T.T == Float' and 'Self.T.T == String'}}
protocol P4 {
associatedtype T : P1 & P2 & P3
}
class Class<T> {}
extension Class where T == Bool {
// CHECK-LABEL: .badRequirement()@
// CHECK-NEXT: <T where T == Int>
func badRequirement() where T == Int { }
// expected-error@-1 {{no type for 'T' can satisfy both 'T == Int' and 'T == Bool'}}
}
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