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When applying generic arguments to a local generic type within a generic function, ensure that we correctly produce the contextual substitutions from the generic function. Fixed with Pavel, who painstakingly tracked down the bogus substitution. Fixes SR-9954 / rdar://problem/48223824.
29 lines
595 B
Swift
29 lines
595 B
Swift
// RUN: %target-swift-frontend %s -emit-ir
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// SR-9954 / rdar://problem/48223824
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// Rejects well-formed that triggered a fallback diagnostic due to a bad
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// substitution.
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struct GenericThing <Param1, Param2> {
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init (closure: (String)->()) {
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}
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}
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struct ThingHolder <Param1> {
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func acceptThing <Param2> (thingGenerator: ()->GenericThing<Param1, Param2>) {
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}
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}
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struct A { }
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func demo <Param1> (thingHolder: ThingHolder<Param1>) {
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typealias Thing <Param2> = GenericThing<Param1, Param2>
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thingHolder.acceptThing {
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Thing<A> { string in
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}
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}
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}
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