| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Noah Misch <noah(at)leadboat(dot)com> |
| Cc: | Sriram RK <sriram(dot)rk(at)outlook(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: AIX support |
| Date: | 2024-03-29 03:14:37 |
| Message-ID: | CA+hUKG+7_ON7hd_oB6YjD4Tx23wL4E1UBSWg6C+O1brMgDB58A@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Mar 29, 2024 at 4:00 PM Thomas Munro <thomas(dot)munro(at)gmail(dot)com> wrote:
> On Fri, Mar 29, 2024 at 3:48 PM Noah Misch <noah(at)leadboat(dot)com> wrote:
> > The thread Alvaro and Tom cited contains an analysis. It's a compiler bug.
> > You can get past the compiler bug by upgrading your compiler; both ibm-clang
> > 17.1.1.2 and gcc 13.2.0 are free from the bug.
>
> For the specific issue that triggered that, I strongly suspect that it
> would go away if we just used smgrzeroextend() instead of smgrextend()
> using that variable with the alignment requirement, since, as far as I
> can tell from build farm clues, the otherwise similar function-local
> static variable used by the former (ie one that the linker must still
> control the location of AFAIK?) seems to work fine.
Oh, sorry, I had missed the part where newer compilers fix the issue
too. Old out-of-support versions of AIX running old compilers, what
fun.
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