[Lldb-commits] [PATCH] D83327: [lldb/Core] Fix incomplete type variable dereferencing crash.

Med Ismail Bennani via Phabricator via lldb-commits lldb-commits at lists.llvm.org
Tue Jul 7 11:33:10 PDT 2020


mib added a comment.

In D83327#2136863 <https://reviews.llvm.org/D83327#2136863>, @davide wrote:

> In D83327#2136842 <https://reviews.llvm.org/D83327#2136842>, @jingham wrote:
>
> > In D83327#2136814 <https://reviews.llvm.org/D83327#2136814>, @davide wrote:
> >
> > > Aside from cosmetics, I'm not entirely sure this is the correct fix. Why are we calling this code _at all_ if the type is incomplete?
> >
> >
> > Doing so allows one to write a synthetic child provider that provides the fields for an incomplete type.  This is useful if you don't have debug info for a given type but know its layouts by some other means.
>
>
> Interesting, thanks. Do we have an example of when this triggers?


This change was first introduced by D79554 <https://reviews.llvm.org/D79554>, with the `CFDictionaryRef` formatter. They reused the same logic as NSCFDictionary but needed this to generate the ValueObject's children.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D83327/new/

https://reviews.llvm.org/D83327





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