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Sema: Don't allow generic typealiases to have an unbound generic underlying type #21341

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Merged
merged 1 commit into from
Dec 15, 2018

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slavapestov
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We allow this sort of thing:

struct Generic<T> {}
typealias Alias = Generic
...
Alias<Int>

However we have to be sure to ban this if the typealias is itself generic, ie

typealias Alias<T> = Generic

Otherwise we will crash.

…rlying type

We allow this sort of thing:

struct Generic<T> {}
typealias Alias = Generic
...
Alias<Int>

However we have to be sure to ban this if the typealias is itself generic, ie

typealias Alias<T> = Generic

Otherwise we will crash.
@slavapestov
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@swift-ci Please smoke test

@slavapestov slavapestov merged commit 5c7fd17 into swiftlang:master Dec 15, 2018
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