* C++ typeinfo and vtables vs. DECL_CONTEXT.
@ 2009-05-07 20:08 Dave Korn
2009-05-07 21:49 ` Dave Korn
0 siblings, 1 reply; 2+ messages in thread
From: Dave Korn @ 2009-05-07 20:08 UTC (permalink / raw)
To: gcc
Hi,
This may be a bit of a noob question, but why does the var_decl for a class'
vtable have a DECL_CONTEXT referring to the owning record_type, but the
var_decl for its typeinfo doesn't?
(On i386/PE, this leads to typeinfo not being dllexported.)
cheers,
DaveK
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: C++ typeinfo and vtables vs. DECL_CONTEXT.
2009-05-07 20:08 C++ typeinfo and vtables vs. DECL_CONTEXT Dave Korn
@ 2009-05-07 21:49 ` Dave Korn
0 siblings, 0 replies; 2+ messages in thread
From: Dave Korn @ 2009-05-07 21:49 UTC (permalink / raw)
To: Dave Korn; +Cc: gcc
Dave Korn wrote:
> Hi,
>
> This may be a bit of a noob question, but why does the var_decl for a class'
> vtable have a DECL_CONTEXT referring to the owning record_type, but the
> var_decl for its typeinfo doesn't?
Hmm, I think I found the answer: because it's secretly actually an internal
POD type that is carefully laid out to match the library's std::type_info
object. Ah. I need to find a way to identify typeinfos and get a handle back
on their class record_type.
cheers,
DaveK
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