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Re: -fno-weak, typeinfo, and AIX
Richard Henderson wrote:
> On Fri, Jan 26, 2001 at 04:18:47PM +0100, Jamie Lokier wrote:
> > 1. Load libA.so -- defines typeinfo A.
> > 2. Load libB.so -- also defines typeinfo A, the one in libA.so wins.
> > 3. Unload libA.so -- still with references to typeinfo A from libB.so.
> That should work. libA won't really be unloaded, since ld.so
> is supposed to track dependancies between DSOs.
> More interesting, however, is libA and libB dlopen'ed, but without
> RTLD_GLOBAL. In this case, neither DSO adds their symbols to the
> global pool, so they don't resolve symbols between themselves.
> The weak trick doesn't work there.
Without RTLD_GLOBAL is more what I had in mind. Where you may also want
to explicitly unload libA.so. E.g. if it's a plugin and you want to