jfb marked an inline comment as done.
jfb added inline comments.

================
Comment at: test/SemaObjCXX/no-crash-thread-safety-analysis.mm:1
+// RUN: %clang_cc1 -fsyntax-only -verify -Wthread-safety -Wno-objc-root-class 
%s
+
----------------
aaron.ballman wrote:
> jfb wrote:
> > aaron.ballman wrote:
> > > aaronpuchert wrote:
> > > > jfb wrote:
> > > > > aaronpuchert wrote:
> > > > > > Test is fine for me, but I would like if you could integrate it 
> > > > > > with the existing test/SemaObjCXX/warn-thread-safety-analysis.mm. 
> > > > > > The thread safety analysis requires a bit of setup, that's why we 
> > > > > > tend to keep the tests in one file. I'll admit that the C++ tests 
> > > > > > have grown quite large, but for ObjC++ it's still very manageable. 
> > > > > Sure thing! I created a header that's shared and simplified this 
> > > > > repro a bit. I validated that the shared code was crashing before and 
> > > > > this fixes the crash.
> > > > I would still like all ObjCXX tests for -Wthread-safety in one file, 
> > > > because that's what we have for the other languages as well. (more or 
> > > > less)
> > > > 
> > > > It's somewhat easier to see which aspects are tested then and which are 
> > > > not. Right now we only have tests for reported crashes, but maybe 
> > > > someday someone finds the time to test a bit more exhaustively.
> > > > 
> > > > But perhaps @aaron.ballman sees this another way, in that case follow 
> > > > his opinion.
> > > On one hand, the all-in-one test files get to be unwieldy size, but on 
> > > the other hand, it's nice having everything integrated into a single file 
> > > for testing purposes. I'd say go with the all-in-one approach because 
> > > it's consistent with how we otherwise test thread safety and there are 
> > > some (albeit, minor) benefits.
> > I'm not a fan of huge tests, and it's not consistent with other parts of 
> > LLVM. Specifically, this is testing for a regression, and should standalone 
> > to future edits don't refactor the test away. The existing test checks for 
> > functionality, and refactoring it is fine.
> I'm not going to insist, but the two people who do the most active work in 
> this area in recent history just told you what they prefer. ;-) We add 
> regression tests to the existing thread safety test files and it's worked out 
> just fine.
4% of files under clang/test (and llvm/test) start with "PR".  I appreciate 
your being gentle... and I'll gently nudge folks working on thread safety to 
follow the established process clang and LLVM follow ;-)
Maybe I should file a bug to follow said process myself?

Basically, this file is here to prevent regressions. It really shouldn't 
change, ever, and I'd like to make this explicit.


Repository:
  rC Clang

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D59523/new/

https://reviews.llvm.org/D59523



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