[Lldb-commits] [PATCH] Force iteration over FieldDecls and RecordDecls in deterministic order.

[Zachary Turner]

This bug isn't specific to Microsoft layout. Clang as a general rule
requires fields to be added in offset order, and iterating over a dense map
doesn't give you that.

I'll let majnemer or rnk comment on the ExternalASTSource interface
On Tue, Mar 24, 2015 at 10:15 AM Sean Callanan <scallanan at apple.com> wrote:

> As an aside, when laying out a RecordDecl, you have the ordering for its
> fields right in the RecordDecl.  If MicrosoftRecordLayoutBuilder relying on
> the llvm::DenseMap for ordering, I think it's MicrosoftRecordLayoutBuilder
> that has the bug.  By my understanding of how record layout works, it
> should only be using the map to go from fields/bases to offsets – nothing
> else.
>
>
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>
> http://reviews.llvm.org/D8512
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