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

================
Comment at: clang/docs/ClangPlugins.rst:58
     ExamplePragmaHandler() : PragmaHandler("example_pragma") { }
-    void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
+    void HandlePragma(Preprocessor &PP, PragmaIntroducer Introducer,
                       Token &PragmaTok) {
----------------
jdenny wrote:
> lebedev.ri wrote:
> > jdenny wrote:
> > > lebedev.ri wrote:
> > > > Hmm.
> > > > This will have effects on out-of-tree plugins that define pragmas.
> > > > I'm not sure how to proceed here, just notify cfe-dev and move on?
> > > We could do something like this in `PragmaHandler`:
> > > 
> > > ```
> > >   virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind 
> > > Introducer,
> > >                             Token &FirstToken) {
> > >     llvm_unreachable("deprecated HandlePragma unexpectedly called");
> > >   }
> > >   virtual void HandlePragma(Preprocessor &PP, PragmaIntroducer Introducer,
> > >                             Token &FirstToken) {
> > >     HandlePragma(PP, Introducer.Kind, FirstToken);
> > >   }
> > > ```
> > > 
> > > The derived class could override either one.  Unfortunately, if it didn't 
> > > override either, the error is then at run time instead of compile time as 
> > > it is now.
> > > 
> > > Whether this is worth it, I don't know.  Who's the right person to answer 
> > > this question?
> > I think mailing cfe-dev will get this question the most visibility.
> > Though i //think// the solution will be to go with the current patch.
> I tried that at
> 
> http://lists.llvm.org/pipermail/cfe-dev/2019-May/062297.htm
> 
> but it's been a week without a response.  I'm happy to try again, perhaps 
> with a shorter more general email about `PragmaHandler` backward 
> compatibility that might catch a different set of eyes.  Is it worth it, or 
> should we just assume no response so far means no one thinks it's an issue?  
> Thanks.
Sorry, copy and paste error.  The URL is:

http://lists.llvm.org/pipermail/cfe-dev/2019-May/062297.html


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D61643/new/

https://reviews.llvm.org/D61643



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