llvm dev - Sep 2021 - clang-tidy: identify "C++-code-specific-checks" and "C-Code-specific-checks"

Greetings!

We are using clang-tidy with single 'config-file' listing enabled
tidy-checks to run for both "C++-code" and "C-code".

We are looking for your inputs:

  1.  From list of supported clang-tidy checks, how to identify
"C++-code-specific-checks" and which are
"C-Code-specific-checks"? Can this be checked programmatically?
  2.  Are "clang-analyzer-" checks only applied to C++-code?
  3.  What happens internally if C++-code-check ran on C-code? Will it skip
parsing C-code?

Thank you in advance for your valuable inputs.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20210915/2e158995/attachment.html>

Hello,

Please see my comments inlined.

[1]
https://clang-analyzer.llvm.org/available_checks.html
> On 15 Sep 2021, at 10:09, Oza, Hiral via cfe-dev <cfe-dev at
lists.llvm.org> wrote:
> 
> Greetings!
>  
> We are using clang-tidy with single ‘config-file’ listing enabled
tidy-checks to run for both “C++-code” and “C-code”.
>  
> We are looking for your inputs:
> From list of supported clang-tidy checks, how to identify
"C++-code-specific-checks" and which are
"C-Code-specific-checks"? Can this be checked programmatically?
		What are you trying to achieve? clang-tidy addresses more C++ checkers, I
don’t recall seeing C specific checkers and no, you cannot determine this
programatically since it’s a matter of matching at the AST
level.
> Are “clang-analyzer-“ checks only applied to C++-code?
	       No, there are a wide variaty of checkers that apply to C and C++
[1]
> What happens internally if C++-code-check ran on C-code? Will it skip
parsing C-code?
		Nothing really, since the clang-tidy checkers are implemented mostly as
matcher at the AST level and since specific nodes that are matched for a
checkers are not present in the AST the checker will not get
triggered.
>  
> Thank you in advance for your valuable inputs.
> _______________________________________________
> cfe-dev mailing list
> cfe-dev at lists.llvm.org <mailto:cfe-dev at lists.llvm.org>
> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
<https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20210915/6ddf6d94/attachment.html>

On Wed, Sep 15, 2021 at 3:09 AM Oza, Hiral via cfe-dev
<cfe-dev at lists.llvm.org> wrote:
>
> Greetings!
>
> We are using clang-tidy with single ‘config-file’ listing enabled
tidy-checks to run for both “C++-code” and “C-code”.
>
> We are looking for your inputs:
>
> From list of supported clang-tidy checks, how to identify
"C++-code-specific-checks" and which are
"C-Code-specific-checks"? Can this be checked programmatically?
There is not a way to identify them from the command line, but each
check has an `isLanguageVersionSupported()` function that checks for
valid language options that you can use to find this information via
manual inspection.
> Are “clang-analyzer-“ checks only applied to C++-code?
Not always, those come from the static analyzer (rather than
explicitly written as clang-tidy checks) and many of those apply to C
code as well as C++ code (for example, there are checks specific to
malloc/free behavior, checks for division by zero, etc).
> What happens internally if C++-code-check ran on C-code? Will it skip
parsing C-code?
If the check is designed to be C++-only, then it will be skipped for a
C translation unit.

~Aaron
>
>
>
> Thank you in advance for your valuable inputs.
>
> _______________________________________________
> cfe-dev mailing list
> cfe-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev