Re: Reducing the chunk header sizes on all memory context types

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, David Rowley <dgrowleyml(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Yura Sokolov <y(dot)sokolov(at)postgrespro(dot)ru>, PostgreSQL Developers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Reducing the chunk header sizes on all memory context types
Date: 2022-08-29 15:31:40
Message-ID: 3208136.1661787100@sss.pgh.pa.us
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Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> I've got another problem with this patch here on macOS:

> In file included from aset.c:52:
> ../../../../src/include/utils/memutils_memorychunk.h:170:18: error:
> comparison of constant 7 with expression of type
> 'MemoryContextMethodID' (aka 'enum MemoryContextMethodID') is always
> true [-Werror,-Wtautological-constant-out-of-range-compare]
> Assert(methodid <= MEMORY_CONTEXT_METHODID_MASK);
> ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ../../../../src/include/c.h:827:9: note: expanded from macro 'Assert'
> if (!(condition)) \
> ^~~~~~~~~

Huh. My macOS buildfarm animals aren't showing that, nor can I
repro it on my laptop. Which compiler version are you using exactly?

regards, tom lane

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