[PATCH] D44652: [vfs] Don't bail out after a missing -ivfsoverlay file

[Ben Langmuir via Phabricator via cfe-commits]

benlangmuir created this revision.
benlangmuir added reviewers: bruno, vsapsai.
Herald added a subscriber: cfe-commits.

This make -ivfsoverlay behave more like other fatal errors (e.g. missing
-include file) by skipping the missing file instead of bailing out of
the whole compilation. This makes it possible for libclang to still
provide some functionallity as well as to correctly produce the fatal
error diagnostic (previously we lost the diagnostic in libclang since
there was no TU to tie it to).

      

rdar://33385423


Repository:
  rC Clang

https://reviews.llvm.org/D44652

Files:
  include/clang/Frontend/PrecompiledPreamble.h
  lib/Frontend/ASTUnit.cpp
  lib/Frontend/CompilerInstance.cpp
  lib/Frontend/CompilerInvocation.cpp
  lib/Frontend/PrecompiledPreamble.cpp
  test/Index/missing_vfs.c
  test/VFS/Inputs/MissingVFS/a.h
  test/VFS/Inputs/MissingVFS/module.modulemap
  test/VFS/Inputs/MissingVFS/vfsoverlay.yaml
  test/VFS/module_missing_vfs.m

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