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00cc26004b
We previously penalized bindings to Any, and that resulted in
inappropriately rejecting solutions where we bind a decl that is
explicitly typed Any. That penalty was removed in
170dc8acd7, but that has led to a variety
of source compatibility issues.
So now, we'll reintroduce a penalty for Any-typed things, but instead of
penalizing bindings (which happen both because of explicitly-typed
values in the source, and implicitly due to attempting various types for
a particular type variable), penalize casts, which are always present in
some form in the source.
Thanks go to John for the suggestion.
Fixes
SR-3817 (aka rdar://problem/30311052)
SR-3786 (aka rdar://problem/30268529)
rdar://problem/29907555
55 lines
1.7 KiB
Swift
55 lines
1.7 KiB
Swift
// RUN: %target-typecheck-verify-swift
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func f0(_ i: Int, _ d: Double) {} // expected-note{{found this candidate}}
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func f0(_ d: Double, _ i: Int) {} // expected-note{{found this candidate}}
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f0(1, 2) // expected-error{{ambiguous use of 'f0'}}
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func f1(_ i: Int16) {} // expected-note{{found this candidate}}
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func f1(_ i: Int32) {} // expected-note{{found this candidate}}
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f1(0) // expected-error{{ambiguous use of 'f1'}}
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infix operator +++
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func +++(i: Int, d: Double) {} // expected-note{{found this candidate}}
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func +++(d: Double, i: Int) {} // expected-note{{found this candidate}}
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1 +++ 2 // expected-error{{ambiguous use of operator '+++'}}
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class C {
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init(_ action: (Int) -> ()) {} // expected-note{{found this candidate}}
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init(_ action: (Int, Int) -> ()) {} // expected-note{{found this candidate}}
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}
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func g(_ x: Int) -> () {} // expected-note{{found this candidate}}
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func g(_ x: Int, _ y: Int) -> () {} // expected-note{{found this candidate}}
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C(g) // expected-error{{ambiguous use of 'g'}}
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func h<T>(_ x: T) -> () {}
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C(h) // expected-error{{ambiguous use of 'init'}}
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func rdar29691909_callee(_ o: AnyObject?) -> Any? { return o } // expected-note {{found this candidate}}
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func rdar29691909_callee(_ o: AnyObject) -> Any { return o } // expected-note {{found this candidate}}
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func rdar29691909(o: AnyObject) -> Any? {
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return rdar29691909_callee(o) // expected-error{{ambiguous use of 'rdar29691909_callee'}}
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}
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func rdar29907555(_ value: Any!) -> String {
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return "\(value)" // no error
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}
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struct SR3715 {
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var overloaded: Int!
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func overloaded(_ x: Int) {}
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func overloaded(_ x: Float) {}
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func take(_ a: [Any]) {}
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func test() {
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take([overloaded]) // no error
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}
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}
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