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From: Tom Lane <tgl@sss.pgh.pa.us>
To: John Naylor <john.naylor@enterprisedb.com>
Cc: Michael Paquier <michael@paquier.xyz>
Cc: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Cc: Daniel Verite <daniel@manitou-mail.org>
Subject: Re: speed up unicode decomposition and recomposition
Date: Fri, 23 Oct 2020 12:07:52 -0400
Message-ID: <207789.1603469272@sss.pgh.pa.us> (raw)
In-Reply-To: <CAFBsxsEY4zNhD+0Tp0e1S9wo_if2joPrRE-0egUXb=1QZaH+tg@mail.gmail.com>
References: <20201015002523.GA2305@paquier.xyz>
	<CAFBsxsGndjXKUOzwzK0C2aaCwqnp01Nw3YrpP-x3PPJrfCB+8Q@mail.gmail.com>
	<3648966.1602731188@sss.pgh.pa.us>
	<20201015.143047.941890614281076696.horikyota.ntt@gmail.com>
	<CAFBsxsFFCbooybVsWDj_wzDLEKN04YqCRssQ5Li0bUyWvR9eVA@mail.gmail.com>
	<20201016033208.GC1581@paquier.xyz>
	<CAFBsxsFwu0w4TNK+UnCfnzsi2nGKkG3LBKXCPCjDJBXg6iZpjw@mail.gmail.com>
	<CAFBsxsEAY3_h1yizjO9o5Q33ZZ4Xvz+nSFkP-okO46tVwNoA6A@mail.gmail.com>
	<20201022043418.GI1475@paquier.xyz>
	<CAFBsxsF=Z8qVGj0jKLUK6=qWfrR7OB9zoxpR8NxwgP7y5BsNng@mail.gmail.com>
	<20201023021124.GN1475@paquier.xyz>
	<CAFBsxsEY4zNhD+0Tp0e1S9wo_if2joPrRE-0egUXb=1QZaH+tg@mail.gmail.com>

I chanced to do an --enable-coverage test run today, and I got this
weird message during "make coverage-html":

genhtml: WARNING: function data mismatch at /home/postgres/pgsql/src/common/unicode_norm.c:102

I've never seen anything like that before.  I suppose it means that
something about 783f0cc64 is a bit fishy, but I don't know what.

The emitted coverage report looks fairly normal anyway.  It says
unicode_norm.c has zero test coverage, which is very possibly correct
since I wasn't running in UTF8 encoding, but I'm not entirely sure of
that either.

This is with RHEL8's lcov-1.13-4.el8 package.  I suppose the first
question is does anybody else see that?

			regards, tom lane





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