https://issues.dlang.org/show_bug.cgi?id=13155
Issue ID: 13155
Summary: Disallow final abstract classes
Product: D
Version: D2
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P1
Component: DMD
Assignee: [email protected]
Reporter: [email protected]
This code should NOT compile:
---
final abstract class C { }
---
Such classes are almost useless and generally indicate an error. Note unless
enhancement Issue 2946 is fixed the class may be derived as `abstract`:
---
final class C: B { }
---
`C` may or may no be `abstract` here depending on `B`. And one have to look
through every ancestor of `C` to determine whether it contains an unimplemented
`abstract` method.
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