jimingham wrote:
We should definitely put more comments in the ValueObject.h header, a lot of
those interfaces are mysterious.
GetAddressOf is solving a very particular problem, which is that if someone
does:
(lldb) expr MakeMeAFooObject()
$0= {whatever}
(lldb) expr CallAFunctionTakingAFooPointer(&$0)
People really want that to work, but $0 is a "constant result" so where it
lives is not clear. It's also important for data formatters that want to use a
pointer to some ValueObject or ValueObject child. For expr results we make a
shadow copy in the target so we can resolve this issue (this is one of the jobs
of the `m_live_address` ivar).
So it is really for finding addresses in the target, and should fail if we
can't realize that.
https://github.com/llvm/llvm-project/pull/89110
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