The LLVM Project is a collection of modular and reusable compiler and toolchain technologies. This fork is used to manage Apple’s stable releases of Clang as well as support the Swift project.
HeaderSearch::MarkFileModuleHeader is no longer properly checking for no-changes, and so sets the HeaderFileInfo for every textual header to non-external.
HeaderSearch::MarkFileModuleHeader is no longer properly checking for no-changes, and so sets the HeaderFileInfo for every
textual header
to non-external.rdar://129866498