[PATCH] D71431: Call objc_retainBlock before passing a block as a variadic argument

[Akira Hatanaka via Phabricator via cfe-commits]

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


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Comment at: clang/docs/AutomaticReferenceCounting.rst:1866
 
+When a block pointer type is converted to type ``id``, ``Block_copy`` is called.
+This is necessary because a block allocated on the stack won't get copied to the
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rjmccall wrote:
> "to a non-block pointer type (such as ``id``)", please.  Otherwise looks good.  I didn't realize that this conversion behavior wasn't documented at all, so thank you for adding it.
I thought it was documented too and searched for it, but couldn't find it anywhere in the ARC doc.


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  https://reviews.llvm.org/D71431/new/

https://reviews.llvm.org/D71431