> On Sep 11, 2025, at 9:36 PM, Michael Paquier <mich...@paquier.xyz> wrote:
> 
> On Thu, Sep 11, 2025 at 06:56:07AM -0400, Greg Burd wrote:
>> Just for reference I started this not to increase coverage, which is a good
>> goal just not the one I had.  I was reviewing the API and considering some
>> changes based on other work I've done.  Now that I see how deeply baked in
>> this code is I think that's unlikely.  Maybe something else distinct for
>> bitmaps over 64-bit space at some point will be useful.  I wrote this code
>> just to capture the API in test form.
> 
> How much does this measure in terms of numbers produced by
> coverage-html (see [1])?  The paths taken don't always matter as it
> can also be important to check combinations of code paths that are
> taken by other tests when checking after edge cases, but that would
> give an idea of gain vs extra runtime.  Not objecting to your patch,
> just being curious as I am not seeing any numbers posted on this
> thread.
> 
> [1]: https://www.postgresql.org/docs/devel/regress-coverage.html
> --
> Michael


Sawada-san, Michael,

Thank you both for the push to measure.  Before the patch as it stands now the
coverage for src/backend/nodes/bitmapset.c is 63.5% and after it is 66.5%.  Not
an amazing difference, but something.  I guess I expected this to be higher 
given
the degree to which this datatype is used.

I'll review the gaps in coverage and update the tests.  I'll look for a way to 
add
meaningful randomization.

-greg

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