Re: [PATCH] kunit: cleanup assertion macro internal variables

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On Fri, Jan 28, 2022 at 5:52 AM Daniel Latypov <dlatypov@xxxxxxxxxx> wrote:
>
> All the operands should be tagged `const`.
> We're only assigning them to variables so that we can compare them (e.g.
> check if left == right, etc.) and avoid evaluating expressions multiple
> times.
>
> There's no need for them to be mutable.
>
> Also rename the helper variable `loc` to `__loc` like we do with
> `__assertion` and `__strs` to avoid potential name collisions with user
> code.
>
> Signed-off-by: Daniel Latypov <dlatypov@xxxxxxxxxx>
> ---
> Note: this patch is based on top of
> https://lore.kernel.org/all/20220125210011.3817742-4-dlatypov@xxxxxxxxxx/
> There is no semantic dependency between the patches, but they touch
> adjacent lines.
> ---

Looks good.

Reviewed-by: David Gow <davidgow@xxxxxxxxxx>

Cheers,
-- David

>  include/kunit/test.h | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/include/kunit/test.h b/include/kunit/test.h
> index 088ff394ae94..00b9ff7783ab 100644
> --- a/include/kunit/test.h
> +++ b/include/kunit/test.h
> @@ -779,10 +779,10 @@ void kunit_do_failed_assertion(struct kunit *test,
>
>  #define KUNIT_ASSERTION(test, assert_type, pass, assert_class, INITIALIZER, fmt, ...) do { \
>         if (unlikely(!(pass))) {                                               \
> -               static const struct kunit_loc loc = KUNIT_CURRENT_LOC;         \
> +               static const struct kunit_loc __loc = KUNIT_CURRENT_LOC;       \
>                 struct assert_class __assertion = INITIALIZER;                 \
>                 kunit_do_failed_assertion(test,                                \
> -                                         &loc,                                \
> +                                         &__loc,                              \
>                                           assert_type,                         \
>                                           &__assertion.assert,                 \
>                                           fmt,                                 \
> @@ -872,8 +872,8 @@ void kunit_do_failed_assertion(struct kunit *test,
>                                     fmt,                                       \
>                                     ...)                                       \
>  do {                                                                          \
> -       typeof(left) __left = (left);                                          \
> -       typeof(right) __right = (right);                                       \
> +       const typeof(left) __left = (left);                                    \
> +       const typeof(right) __right = (right);                                 \
>         static const struct kunit_binary_assert_text __text = {                \
>                 .operation = #op,                                              \
>                 .left_text = #left,                                            \
> @@ -956,7 +956,7 @@ do {                                                                               \
>                                                 fmt,                           \
>                                                 ...)                           \
>  do {                                                                          \
> -       typeof(ptr) __ptr = (ptr);                                             \
> +       const typeof(ptr) __ptr = (ptr);                                       \
>                                                                                \
>         KUNIT_ASSERTION(test,                                                  \
>                         assert_type,                                           \
> --
> 2.35.0.rc2.247.g8bbb082509-goog
>



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