http://d.puremagic.com/issues/show_bug.cgi?id=10180
Summary: offsetof doesn't work through function call alias this
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Keywords: rejects-valid
Severity: normal
Priority: P2
Component: DMD
AssignedTo: [email protected]
ReportedBy: [email protected]
--- Comment #0 from Kenji Hara <[email protected]> 2013-05-26 22:22:11 PDT ---
template TypeTuple(TL...) { alias TypeTuple = TL; }
template Identity(alias T) { alias Identity = T; }
struct Tuple(Specs...)
{
static if (is(Specs))
{
alias Types = Specs;
Types expand;
alias expand this;
}
else
{
alias Types = TypeTuple!(Specs[0]);
Types expand;
mixin("alias Identity!(expand[0]) "~Specs[1]~";");
@property
ref Tuple!(Specs[0]) _Tuple_super()
{
return *cast(typeof(return)*) (&expand[0]);
}
alias _Tuple_super this;
}
}
void main()
{
Tuple!(int, "a") x;
auto o1 = x.a.offsetof; // OK
auto o2 = x[0].offsetof; // NG: no property 'offsetof' for type 'int'
auto o3 = x._Tuple_super[0].offsetof; // same as above
}
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