Hello, I just found out that sometimes I don't get correct dynamic type in LLDB even if I compile with g++. How can I get typeinfo/vtable dump from LLDB to check if it is still the same name matching issue?
2017-02-06 17:04 GMT-08:00 Robinson, Paul via lldb-dev < lldb-dev@lists.llvm.org>: > Yes, I do get that it was just unfortunate timing. Sorry for failing at > being light-hearted. > > > > I suspect the compiler can be persuaded to emit a name consistent with the > demangling of the vtable name. Despite being the way-things-have-worked > for a long time, it still seems moderately fragile, especially in the face > of various compiler-list debates about what the name actually should > contain. > > --paulr > > > > *From:* Greg Clayton [mailto:gclay...@apple.com] > *Sent:* Monday, February 06, 2017 4:38 PM > *To:* Robinson, Paul > *Cc:* Zachary Turner; LLDB Dev (lldb-dev@lists.llvm.org) > *Subject:* Re: [lldb-dev] RTTI does not work stable in LLDB. > > > > > > On Feb 6, 2017, at 3:38 PM, Robinson, Paul <paul.robin...@sony.com> wrote: > > > > It's not practical for the DWARF to try to identify the actual address of > the vtable; that address might not be available. > > it seems like we could hang onto the linkage_name of the vtable though, > somewhere, so you wouldn't be relying on the demangler you have available > at runtime to produce the same string that the compiler did at compile > time. The symbolic name of the vtable should be unambiguous (one hopes!) > but not depend on the existence of the vtable in any particular place. > > Doesn't solve the problem for today's compilers, granted. > > --paulr > > > > P.S. It would be helpful to have these things come up *before* the next > rev of the spec is frozen. Just sayin'. J > > > > > > We had just identified this today and realized it was a problem so we had > no idea there was a problem until today. Debuggers have been doing this > pretty reliably for the past 15 years, so it was never anything we actually > needed extra support for since it was so easy to do. > > > > Greg > > > > > > > > _______________________________________________ > lldb-dev mailing list > lldb-dev@lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev > >
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