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// RUN: %target-typecheck-verify-swift
class C : Hashable {
var x = 0
func hash(into hasher: inout Hasher) {
hasher.combine(x)
}
}
func == (x: C, y: C) -> Bool { return true }
class D : C {}
// Test dictionary upcasts
var dictCC = Dictionary<C, C>()
var dictCD = Dictionary<C, D>()
var dictDC = Dictionary<D, C>()
var dictDD = Dictionary<D, D>()
dictCC = dictCD
dictCC = dictDC
dictCC = dictDD
dictCD = dictDD
dictCD = dictCC // expected-error{{cannot assign value of type '[C : C]' to type '[C : D]'}}
// expected-note@-1 {{arguments to generic parameter 'Value' ('C' and 'D') are expected to be equal}}
dictDC = dictDD
dictDC = dictCD // expected-error {{cannot assign value of type '[C : D]' to type '[D : C]'}}
// expected-note@-1 {{arguments to generic parameter 'Key' ('C' and 'D') are expected to be equal}}
// expected-note@-2 {{arguments to generic parameter 'Value' ('D' and 'C') are expected to be equal}}
dictDD = dictCC // expected-error{{cannot assign value of type '[C : C]' to type '[D : D]'}}
// expected-note@-1 {{arguments to generic parameter 'Key' ('C' and 'D') are expected to be equal}}
// expected-note@-2 {{arguments to generic parameter 'Value' ('C' and 'D') are expected to be equal}}
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