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From: David Marchand <david.marchand@redhat.com>
To: dev <dev@dpdk.org>
Cc: Aaron Conole <aconole@redhat.com>, dpdk stable <stable@dpdk.org>
Subject: Re: [dpdk-stable] [PATCH v2] test/common: fix log2 check
Date: Fri, 20 Dec 2019 15:43:20 +0100
Message-ID: <CAJFAV8x1y5kzabcK1_XqxNq_TiMYs7aD5Xqdb_e48WU21HyoHw@mail.gmail.com> (raw)
In-Reply-To: <20191220140149.1043-1-david.marchand@redhat.com>

On Fri, Dec 20, 2019 at 3:02 PM David Marchand
<david.marchand@redhat.com> wrote:
>
> We recently started to get random failures on the common_autotest ut with
> clang on Ubuntu 16.04.6.
>
> Example: https://travis-ci.com/DPDK/dpdk/jobs/263177424
>
> Wrong rte_log2_u64(0) val 0, expected ffffffff
> Test Failed
>
> The ut passes 0 to log2() to get an expected value.
>
> Quoting log2 / log(3) manual:
> If x is zero, then a pole error occurs, and the functions return
> -HUGE_VAL, -HUGE_VALF, or -HUGE_VALL, respectively.
>
> rte_log2_uXX helpers handle 0 as a special value and return 0.
> Let's have dedicated tests for this case.
>
> Fixes: 05c4345ef5c2 ("test: add unit test for integer log2 function")
> Cc: stable@dpdk.org
>
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> Acked-by: Aaron Conole <aconole@redhat.com>

Applied with mentioned fix.


-- 
David Marchand


  parent reply	other threads:[~2019-12-20 14:43 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-04 20:52 [dpdk-stable] [PATCH] " David Marchand
2019-12-04 21:19 ` Aaron Conole
2019-12-05  8:31   ` David Marchand
2019-12-05 14:39     ` Aaron Conole
2019-12-20 14:01 ` [dpdk-stable] [PATCH v2] " David Marchand
2019-12-20 14:06   ` David Marchand
2019-12-20 14:43   ` David Marchand [this message]
2019-12-20 14:52     ` Aaron Conole

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