[PATCH] D20338: [PCH] Fixed overridden files always invalidating preamble even when unchanged

[Cameron via cfe-commits]

cameron314 added a comment.

I'm not sure how to test this (originally I found this bug by stepping through with a debugger) -- is there a way to determine if an ASTUnit used a PCH for the preamble or not? I'd call the `getMainBufferWithPrecompiledPreamble` method manually but it's private.


Repository:
  rL LLVM

http://reviews.llvm.org/D20338