http://d.puremagic.com/issues/show_bug.cgi?id=5637
Summary: Anonymous structs/unions should have their own context
Product: D
Version: D1 & D2
Platform: All
OS/Version: All
Status: NEW
Severity: major
Priority: P2
Component: DMD
AssignedTo: nob...@puremagic.com
ReportedBy: ibuc...@ubuntu.com
--- Comment #0 from Iain Buclaw <ibuc...@ubuntu.com> 2011-02-21 14:41:28 PST ---
This is kinda in the same league as bug1432, and I'm pretty certain fixing this
will fix the other bug too.
Basic example to show what I'm talking about:
union A
{
double d;
struct
{
uint hi;
uint lo;
}
}
Here, DMD reports that the union has 3 members, this is IMHO a bogus analysis.
The union has 2 members, and one of them is an anonymous structure who is also
the parent/context of the two fields (hi, lo) that it encases.
This particular example also hurts GDC in some instances, as having a member of
a *union* to whom's offset is > 0 confuses the backend. But there is currently
no way/information available at the codegen stage to prevent this; except,
perhaps looking ahead to scan the offset of all union members to see if the
frontend is hiding a structure somewhere.
This is less than ideal though, and would be better if there was anything to
work with.
Regards
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