[PATCH] D124635: Frontend: Delete output streams before closing CompilerInstance outputs

[Ben Langmuir via Phabricator via cfe-commits]

benlangmuir added a comment.

LGTM, although I made a suggestion about the spelling.

> This fixes theoretical bugs related to proxy streams, which may have
> cleanups to run in their destructor. E.g., buffer_ostream supports
> pwrite() by holding all content in a buffer until destruction time.

The general point about streams with destructors is well taken, but it seems a bit broken that `buffer_ostream` cannot `flush`.  I guess the layering it just weird in that we have buffering in the base class, but `buffer_ostream` wants to do something different.  Could we afford to make `flush` virtual?  Not something needed for this patch.



================
Comment at: clang/lib/ExtractAPI/ExtractAPIConsumer.cpp:796
   SGSerializer.serialize(*OS);
-  OS->flush();
+  OS = nullptr;
 }
----------------
Nit: `OS.reset(nullptr);` makes it more obvious this is a `unique_ptr` and not a raw pointer. Same for the other cases as well.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D124635/new/

https://reviews.llvm.org/D124635