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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Marina Polyakova <m.polyakova@postgrespro.ru>
Cc: vitus@wagner.pp.ru, Andres Freund <andres@anarazel.de>
Cc: pgsql-hackers@postgresql.org, Alvaro Herrera <alvherre@alvh.no-ip.org>
Subject: Re: master make check fails on Solaris 10
Date: Wed, 17 Jan 2018 10:07:37 -0500
Message-ID: <16720.1516201657@sss.pgh.pa.us> (raw)
In-Reply-To: <90ab676392c8f9c84431976147097cf0@postgrespro.ru>
References: <0d3a9fa264cebe1cb9966f37b7c06e86@postgrespro.ru>
	<20180111173938.jimybeayp2u5mmup@alap3.anarazel.de>
	<31a342fa6a025a8bdfc5b8b19c29d56d@postgrespro.ru>
	<fc3c1b52d2d4121cccfc13635005bbd0@postgrespro.ru>
	<1232.1515780057@sss.pgh.pa.us>
	<b946893927ccfd87146d8a7c9f3bbe29@postgrespro.ru>
	<15299.1515867055@sss.pgh.pa.us>
	<a5559105243efcf6fb619d86c5702115@postgrespro.ru>
	<18209.1516059711@sss.pgh.pa.us>
	<90ab676392c8f9c84431976147097cf0@postgrespro.ru>

Marina Polyakova <m.polyakova@postgrespro.ru> writes:
> investigating the regression diffs, we found out that the error occurs 
> when we pass int128 as not the first argument to the function (perhaps 
> its value is replaced by the value of some address):
> ...
> Based on this, we modified the test program (see attached). Here is its 
> output on Solaris 10 for different alignments requirements for int128 
> (on my machine where make check-world passes everything is OK) 
> (ALIGNOF_PG_INT128_TYPE is 16 on Solaris 10):

Excellent.  This fails the same way on gcc 5.2.0 and 5.5.0?

> Maybe some pass test from int128test2.c can be used to test __int128?

Yeah, I can work with this.  What I propose to do is use a somewhat
stripped-down version of this test as an AC_RUN_IFELSE test normally,
but if cross-compiling, fall back to just seeing if we can link.

Thanks for investigating!

			regards, tom lane




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