[PATCH] [ms-cxxabi] Add CGCXXABI::NeedsBodylessEmission function.

[John McCall]

On May 19, 2013, at 3:25 PM, Peter Collingbourne <peter at pcc.me.uk> wrote:
> This function returns true if the ABI requires that we emit a
> definition for a given function, given that we don't have a body
> for it in the TU.

You can't emit a function when you don't have a body for it.

What you're trying to do is force the emission of some kind of
associated thunk because the ABI doesn't guarantee that one
will be emitted in a canonical place.  So what you should do is
enhance the code that requires a reference to said thunk to
force it into existence as necessary, instead of awkwardly
shoving this into the deferred-declaration system.

John.