linux-kernel - Re: [PATCH] kbuild: check return value of asprintf()

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Date:	Mon, 25 Oct 2010 07:42:45 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Michal Marek <mmarek@...e.cz>
CC:	Namhyung Kim <namhyung@...il.com>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: check return value of asprintf()

On 10/25/10 02:30, Michal Marek wrote:
> (adding Randy to CC)

Thanks, Michal.

Acked-by: Randy Dunlap <randy.dunlap@...cle.com>


> On 22.10.2010 16:32, Namhyung Kim wrote:
>> Check return value of asprintf() in docsect() and exit if error
>> occurs. This removes following warning:
>>
>>   HOSTCC  scripts/basic/docproc
>> scripts/basic/docproc.c: In function ‘docsect’:
>> scripts/basic/docproc.c:336: warning: ignoring return value of ‘asprintf’,
>> 				declared with attribute warn_unused_result
>>
>> Signed-off-by: Namhyung Kim <namhyung@...il.com>
>> ---
>> The patch is on top of v2.6.36, thanks.
>>
>>  scripts/basic/docproc.c |    5 ++++-
>>  1 files changed, 4 insertions(+), 1 deletions(-)
>>
>> diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
>> index fc3b18d..98dec87 100644
>> --- a/scripts/basic/docproc.c
>> +++ b/scripts/basic/docproc.c
>> @@ -333,7 +333,10 @@ static void docsect(char *filename, char *line)
>>  		if (*s == '\n')
>>  			*s = '\0';
>>  
>> -	asprintf(&s, "DOC: %s", line);
>> +	if (asprintf(&s, "DOC: %s", line) < 0) {
>> +		perror("asprintf");
>> +		exit(1);
>> +	}
>>  	consume_symbol(s);
>>  	free(s);
>>  
> 


-- 
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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