Re: [edk2-devel] [PATCH v1 0/7] Add DebugMacroCheck

["Pedro Falcato" <pedro.falcato@gmail.com>]

On Mon, Aug 14, 2023 at 9:49 PM Michael Kubacki
<mikuback@linux.microsoft.com> wrote:
>
> From: Michael Kubacki <michael.kubacki@microsoft.com>
>
> Adds a new script and build plugin called DebugMacroCheck.
>
> The script verifies that the number of print specifiers match the
> number of arguments in DEBUG() calls.
>
> Overview:
>
> - Build plugin: BuildPlugin/DebugMacroCheckBuildPlugin.py
>   - Runs on any build target that is not NO-TARGET
> - Standalone script: DebugMacroCheck.py
>   - Run `DebugMacroCheck.py --help` to see command line options
> - Unit tests:
>   - Tests/test_DebugMacroCheck.py
>   - Can be run with:
>     `python -m unittest discover -s ./.pytool/Plugin/DebugMacroCheck/tests -v`
>   - Also visible in VS Code Test Explorer
>
> Background:
>
> The tool has been constantly run against edk2 derived code for about
> a year now. During that time, its found over 20 issues in edk2, over
> 50 issues in various vendor code, and numerous other issues specific
> to Project Mu.
>
> See the following series for a batch of issues previously fixed in
> edk2 discovered by the tool:
>
>   https://edk2.groups.io/g/devel/message/93104
>
> I've received interest from vendors to place it in edk2 to
> immediately find issues in the upstream and make it easier for edk2
> consumers to directly acquire it. That led to this patch series.
>
> This would run in edk2 as a build plugin. All issues in the edk2
> codebase have been resolved so this would find new issues before
> they are merged into the codebase.

Hi,

I really like this change but I cannot stop and think that if DEBUG
and PrintLib were ISO C compliant, we could be using normal interfaces
with normal argument types and the compiler's intrinsic knowledge of
printf-like functions.
Have you explored that option for future code? See e.g
https://godbolt.org/z/4e8d3WToT (I don't know what MSVC uses, if
anything).

-- 
Pedro


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