Re: [PATCH 2/9] fix empty-body warning in posix_acl.c

[Zzy Wysm]

> On Apr 18, 2020, at 1:53 PM, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> 
> Thirdly, there's a *reason* why "-Wextra" isn't used.
> 
> The warnings enabled by -Wextra are usually complete garbage, and
> trying to fix them often makes the code worse. Exactly like here.
> 

As the instigator of this warning cleanup activity, even _I_ donât recommend
building with all of -Wextra.  Doing so on an allmodconfig build generates 
500 megabytes of warning text (not exaggerating), primarily due to 
-Wunused-parameter and Wmissing-field-initializers.

I strongly recommend disabling them with -Wno-unused-parameter 
-Wno-missing-field-initializers since the spew is completely unactionable.

On the other hand, -Woverride-init found a legit bug that was breaking DVD
drives, fixed in commit 03264ddde2453f6877a7d637d84068079632a3c5.

I believe finding a good set of compiler warning settings can lead to lots of 
good bugs being spotted and (hopefully) fixed.  Why let syzbot do all the work?

zzy