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fb3515382c
Currently if destination is unresolved instead of trying to re-typecheck it again and diagnose structural problems which led to such outcome, it gets completely ignored in favor of trying to type-check source without contextual type. That leads to missed diagnostic opportunities, which results in problems on AST verification and SIL generation stages, and generally missleading errors e.g. `.x = 0`. Resolves: SR-3506.
60 lines
1.4 KiB
Swift
60 lines
1.4 KiB
Swift
// RUN: %target-typecheck-verify-swift
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struct X { }
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struct Y { }
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struct WithOverloadedSubscript {
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subscript(i: Int) -> X {
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get {}
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set {}
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}
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subscript(i: Int) -> Y {
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get {}
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set {}
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}
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}
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func test_assign() {
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var a = WithOverloadedSubscript()
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a[0] = X()
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a[0] = Y()
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}
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var i: X
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var j: X
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var f: Y
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func getXY() -> (X, Y) {}
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var ift : (X, Y)
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var ovl = WithOverloadedSubscript()
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var slice: [X]
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i = j
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(i, f) = getXY()
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(i, f) = ift
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(i, f) = (i, f)
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(ovl[0], ovl[0]) = ift
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(ovl[0], ovl[0]) = (i, f)
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(_, ovl[0]) = (i, f)
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(ovl[0], _) = (i, f)
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_ = (i, f)
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slice[7] = i
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slice[7] = f // expected-error{{cannot assign value of type 'Y' to type 'X'}}
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slice[7] = _ // expected-error{{'_' can only appear in a pattern or on the left side of an assignment}}
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func value(_ x: Int) {}
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func value2(_ x: inout Int) {}
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value2(&_) // expected-error{{'_' can only appear in a pattern or on the left side of an assignment}}
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value(_) // expected-error{{'_' can only appear in a pattern or on the left side of an assignment}}
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// <rdar://problem/23798944> = vs. == in Swift if string character count statement causes segmentation fault
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func f23798944() {
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let s = ""
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if s.characters.count = 0 { // expected-error {{cannot assign to property: 'count' is a get-only property}}
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}
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}
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.sr_3506 = 0 // expected-error {{reference to member 'sr_3506' cannot be resolved without a contextual type}} |