Re: [PATCH 4/4] selftests/mm: add self tests for guard page feature

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On Fri, Oct 18, 2024 at 05:07:20PM +0100, Lorenzo Stoakes wrote:
[snip]
> Firstly, as I said, the code _does not compile_ if I do not use braces in
> many cases. This is probably an issue with the macros, but it is out of
> scope for this series for me to fix that.
>
> 'Fixing' these cases results in:
>
>   CC       guard-pages
> guard-pages.c: In function ‘guard_pages_split_merge’:
> guard-pages.c:566:17: error: ‘else’ without a previous ‘if’
>   566 |                 else
>       |                 ^~~~
> guard-pages.c: In function ‘guard_pages_dontneed’:
> guard-pages.c:666:17: error: ‘else’ without a previous ‘if’
>   666 |                 else
>       |                 ^~~~
> guard-pages.c: In function ‘guard_pages_fork’:
> guard-pages.c:957:17: error: ‘else’ without a previous ‘if’
>   957 |                 else
>       |                 ^~~~
> guard-pages.c: In function ‘guard_pages_fork_wipeonfork’:
> guard-pages.c:1010:17: error: ‘else’ without a previous ‘if’
>  1010 |                 else
>       |                 ^~~~

[snip]

An added note - the fact this happens makes the macros suspect everywhere,
and I am concerned single-lining them might break or cause failures not to
propagate perhaps, which led to me _never_ single-lining them I believe and
accounts for a bunch of the warnings.

I can go through and manually test each one to make sure before I
single-line them if necessary.




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