Messages in this thread | | | From | Andy Lutomirski <> | Date | Sun, 15 Jun 2014 11:54:10 -0700 | Subject | Re: [RFC 0/2] __vdso_findsym |
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On Sun, Jun 15, 2014 at 11:39 AM, H. Peter Anvin <hpa@zytor.com> wrote: > Symbol versioning so we can rev the ABI and still provide backwards compatibility. Weak symbols so the libc can override symbols if it considers it appropriate. This is a good thing.
Are we ever going to change, say, the __vdso_clock_gettime ABI without renaming the function? If we want to preserve that ability, I can keep support for versions, but it seems odd.
I don't buy the weak symbol argument at all. We currently expose a strong symbol __vdso_clock_gettime and a weak alias clock_gettime. I agree that, if glibc treats us as a real DSO, then clock_gettime can't be strong, but I don't see why it should exist at all (other than for backwards compatibility).
--Andy
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