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Re: [whopr] Design/implementation alternatives for the driver and WPA
Nick Kledzik <kledzik@apple.com> writes:
> I don't claim our current implementation is bug free, but the lto
> interface
> matches the Apple linker internal model, so we don't expect and have
> not encountered any problems mixing mach-o and llvm bitcode files.
Hmmm, OK, how about this example:
a.o: contains LTO information, refers to S
b.o: no LTO information, defines S
c.o: contains LTO information, defines S at version V, S/V is not hidden
In the absence of b.o, the reference to S in a.o will be resolved
against the definition of S in c.o. In the presence of b.o, the
reference to S in a.o will be resolved against the definition of S in
b.o.
I suppose we could refuse to inline versioned symbols, but that
doesn't seem desirable since it is normally fine.
Ian