linux-kernel - Re: [PATCH] tools/perf/util/*.c: Use "%zd" output format for size

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Message-ID: <5E55C36B.1060601@cn.fujitsu.com>
Date:   Wed, 26 Feb 2020 09:01:31 +0800
From:   Xiao Yang <yangx.jy@...fujitsu.com>
To:     Joe Perches <joe@...ches.com>
CC:     <linux-kernel@...r.kernel.org>, <peterz@...radead.org>,
        <mingo@...hat.com>, <acme@...nel.org>
Subject: Re: [PATCH] tools/perf/util/*.c: Use "%zd" output format for size_t
 type

On 2020/2/26 7:02, Joe Perches wrote:
> On Tue, 2020-02-25 at 14:39 +0800, Xiao Yang wrote:
>> Avoid the following errors when building perf:
>> -----------------------------------------------
>> util/session.c: In function 'perf_session__process_compressed_event':
>> util/session.c:91:11: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'size_t {aka unsigned int}' [-Werror=format=]
>>    pr_debug("decomp (B): %ld to %ld\n", src_size, decomp_size);
> []
>> diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
> []
>> @@ -88,7 +88,7 @@ static int perf_session__process_compressed_event(struct perf_session *session,
>>   		session->decomp_last = decomp;
>>   	}
>>
>> -	pr_debug("decomp (B): %ld to %ld\n", src_size, decomp_size);
>> +	pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size);
> likely better as %zu, etc...
Hi,

Sorry,  %zu is obvious better.
I will send v2 patch shortly.

Thanks,
Xiao Yang
>
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> .
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