Hi all,

This series fully resolves the new instance of -Wstring-compare from
within the __assign_str() macro. The first patch resolves a build
failure with GCC that would be seen with just the second patch applied.
The second patch actually hides the warning.

NOTE: This is based on trace/for-next, which does not contain the
minimum LLVM version bump that occurred later in the current merge
window, so this uses

  __diag_ignore(clang, 11, ...

instead of

  __diag_ignore(clang, 13, ...

which will be required when this is merged into Linus's tree. If you can
base this series on a tree that has the merge commit e5eb28f6d1af ("Merge
tag 'mm-nonmm-stable-2024-03-14-09-36' of
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm") in it, then that
change can be done at application time, rather than merge time (or I can
send a v2). It would be really nice for this to make the merge window so
that this warning does not proliferate into other trees that base on
-rc1.

---
Nathan Chancellor (2):
      compiler_types: Ensure __diag_clang() is always available
      tracing: Ignore -Wstring-compare with diagnostic macros

 include/linux/compiler_types.h               | 4 ++++
 include/trace/stages/stage6_event_callback.h | 5 +++++
 2 files changed, 9 insertions(+)
---
base-commit: 7604256cecef34a82333d9f78262d3180f4eb525
change-id: 20240319-tracing-fully-silence-wstring-compare-e71e2fd17b2a

Best regards,
-- 
Nathan Chancellor <nathan@kernel.org>

On Tue, 19 Mar 2024 09:07:51 -0700
Nathan Chancellor <nathan@kernel.org> wrote:

> Hi all,
> 
> This series fully resolves the new instance of -Wstring-compare from
> within the __assign_str() macro. The first patch resolves a build
> failure with GCC that would be seen with just the second patch applied.
> The second patch actually hides the warning.
> 
> NOTE: This is based on trace/for-next, which does not contain the
> minimum LLVM version bump that occurred later in the current merge
> window, so this uses
> 
>   __diag_ignore(clang, 11, ...
> 
> instead of
> 
>   __diag_ignore(clang, 13, ...
> 
> which will be required when this is merged into Linus's tree. If you can
> base this series on a tree that has the merge commit e5eb28f6d1af ("Merge
> tag 'mm-nonmm-stable-2024-03-14-09-36' of
> git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm") in it, then that
> change can be done at application time, rather than merge time (or I can
> send a v2). It would be really nice for this to make the merge window so
> that this warning does not proliferate into other trees that base on
> -rc1.
> 

I'm guessing this isn't needed with the last update.

-- Steve

On Tue, Mar 19, 2024 at 06:15:09PM -0400, Steven Rostedt wrote:
> On Tue, 19 Mar 2024 09:07:51 -0700
> Nathan Chancellor <nathan@kernel.org> wrote:
> 
> > Hi all,
> > 
> > This series fully resolves the new instance of -Wstring-compare from
> > within the __assign_str() macro. The first patch resolves a build
> > failure with GCC that would be seen with just the second patch applied.
> > The second patch actually hides the warning.
> > 
> > NOTE: This is based on trace/for-next, which does not contain the
> > minimum LLVM version bump that occurred later in the current merge
> > window, so this uses
> > 
> >   __diag_ignore(clang, 11, ...
> > 
> > instead of
> > 
> >   __diag_ignore(clang, 13, ...
> > 
> > which will be required when this is merged into Linus's tree. If you can
> > base this series on a tree that has the merge commit e5eb28f6d1af ("Merge
> > tag 'mm-nonmm-stable-2024-03-14-09-36' of
> > git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm") in it, then that
> > change can be done at application time, rather than merge time (or I can
> > send a v2). It would be really nice for this to make the merge window so
> > that this warning does not proliferate into other trees that base on
> > -rc1.
> > 
> 
> I'm guessing this isn't needed with the last update.

Correct, this is resolved in Linus's tree and should be in -next
tomorrow. The first patch may be worth sending standalone, I'll think
about sending it later but that can go in via some other tree, not
yours.

Cheers,
Nathan