[SR-416] Automatic initializer inheritance doesn't work for generic types. #43033
Description
| Previous ID | SR-416 |
| Radar | rdar://problem/17960407 |
| Original Reporter | AntiMoron (JIRA User) |
| Type | Bug |
| Status | Resolved |
| Resolution | Done |
Additional Detail from JIRA
| Votes | 8 |
| Component/s | Compiler |
| Labels | Bug |
| Assignee | @slavapestov |
| Priority | Medium |
md5: 653f63eac7d43989c4cea17dfc9d61f0
is duplicated by:
- SR-1375 Availability of default values in initializer or generics in class definition may prevent swift from inheritance of initializer.
- SR-924 Subclass of generic class has no initializers
Issue Description:
For such code:
public class A<T : Any> {
public init(n : Int) {
print("A")
}
}
public class B : A<Int> {
}
let x = B(n: 123)
The two rules from documation have no effect.
Rule 1 “If your subclass doesn’t define any designated initializers, it automatically inherits all of its superclass designated initializers.”
Rule 2 “If your subclass provides an implementation of all of its superclass designated initializers—either by inheriting them as per rule 1, or by providing a custom implementation as part of its definition—then it automatically inherits all of the superclass convenience initializers.”
For more details see http://stackoverflow.com/questions/34525368/initializers-from-generic-types-wont-be-inherited-in-swift