|From:||Bruce Momjian <bruce(at)momjian(dot)us>|
|To:||Andres Freund <andres(at)anarazel(dot)de>|
|Cc:||Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org|
|Subject:||Re: Reduce function call costs on ELF platforms|
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On Mon, Nov 22, 2021 at 03:57:45PM -0800, Andres Freund wrote:
> It does however change symbol binding, basically making all symbols bound
> eagerly. Which I guess theoretically could be considered an ABI change,
> because it removes the ability to intercept symbols referenced in a previously
> loaded shared library, with a subsequently loaded library (e.g. loaded with
> RTLD_DEEPBIND) function before the symbol is used. But that seems like a
> stretch. And I think most ELF platforms/linux distributions have/are moving
> towards using -Wl,-z,now -Wl,-z,relro also makes symbols bound eagerly.
I found this really interesting, and I am surprised how things got so
suboptimal. Has it always been this way? Is it the use of C++ that is
causing this by default?
If only the physical world exists, free will is an illusion.
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