[PATCH] D53866: [Preamble] Fix preamble for circular #includes

[Ivan Donchevskii via Phabricator via cfe-commits]

yvvan added a comment.

@ilya-biryukov 
As far as I understand the problem the same thing happens when you are in the header a.h which includes b.h and b.h includes a.h at the same time. So you get this recursion indirectly and very often because that's why include guards are there.


Repository:
  rC Clang

https://reviews.llvm.org/D53866