Re: [PATCH] selftests/mm: mremap_test: fix build warning

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On 1/12/24 2:14 AM, Andrew Morton wrote:
> On Thu, 11 Jan 2024 13:20:38 +0500 Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx> wrote:
> 
>> Fix following build warning:
>> warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long unsigned int’
>>
> 
> Looks good to me, but... grumble.
> 
> `i' is an integer.  That's just how it is, Blame Fortran if you like. 
Didn't know this. Thanks for sharing. I'll send a v2 by using two variables.

> Discovering that someone used `i' for an unsigned long long is like
> seeing
> 
> 	struct inode *page;
> 
> It is surprising, and readers shouldn't be subjected to surprises.
> 
> `i' is used in two ways here.  Twice to iterate across threshold values
> (as a ULL) and once to iterate across dest_preamble_size, which is an
> int.  It would be better to have two different variables for the two
> different uses.  Ones with more appropriate names than `i'.
> 

-- 
BR,
Muhammad Usama Anjum




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