http://d.puremagic.com/issues/show_bug.cgi?id=5380
Summary: Subtyping with "alias this" doesn't mix with regular
inheritance
Product: D
Version: D2
Platform: Other
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: [email protected]
ReportedBy: [email protected]
--- Comment #0 from Max Samukha <[email protected]> 2010-12-27 03:59:11
PST ---
class A
{
}
class B
{
A a;
alias a this;
}
class C : B
{
}
void main()
{
A a = new C; // error
}
Error: cannot implicitly convert expression (new C) of type test.C to test.A
Since C is a subtype of B (via inheritance) and B is a subtype of A (via "alias
this"), C should be implicitly convertible to A.
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