https://issues.dlang.org/show_bug.cgi?id=17276
Issue ID: 17276
Summary: BaseClassesTuple fails on extern C++ classes that
implement an interface without a base class
Product: D
Version: D2
Hardware: x86_64
OS: Linux
Status: NEW
Severity: minor
Priority: P1
Component: phobos
Assignee: [email protected]
Reporter: [email protected]
Given following code:
extern (C++) {
interface Ext {
void someext();
}
class E : Ext {
void someext() {
}
}
}
void main() {
import std.traits;
pragma(msg, BaseClassesTuple!E);
}
The resulting error is:
phobos/std/traits.d(3798,24): Error: template instance
std.traits.BaseClassesTuple!(Ext) does not match template declaration
BaseClassesTuple(T) if (is(T == class))
BaseClassesTuple will fail to get list of base classes, incorrectly treating
Ext interface as a class.
It seems BaseClassesTuple was designed to be used only on D classes that are
guaranteed to extend Object class.
--
