| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Stephen Frost <sfrost(at)snowman(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Ildar Musin <i(dot)musin(at)postgrespro(dot)ru>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: IndexTupleDSize macro seems redundant |
| Date: | 2018-01-11 18:35:06 |
| Message-ID: | 20180111183506.hdwyxoeexqp3dcwd@alap3.anarazel.de |
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| Lists: | pgsql-hackers |
On 2018-01-11 13:26:27 -0500, Tom Lane wrote:
> I wonder whether there is a way to get alignment traps on Intel-type
> hardware. It's getting less and less likely that most hackers are
> developing on anything else, so that we don't see gotchas of this
> type until code hits the buildfarm (and even then, only if the case
> is actually exercised in regression testing).
It's possible, but a lot of code out there, including things like glibc,
assumes that unaligned accesses are fine. Therefore it's very painful to
use.
Greetings,
Andres Freund
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