[PATCH] D37474: [PCH] Allow VFS to be used for tests that generate PCH files

[Cameron via Phabricator via cfe-commits]

cameron314 added a comment.

Looking at the way remapped buffers are handled, I just remembered that they must exist on the file system (at the very least, in a directory that exists) or the remapping is not taken into account. So that pretty much rules out the other approach, I think.


https://reviews.llvm.org/D37474