[PATCH] D54245: [VFS] Implement `RedirectingFileSystem::getRealPath`.

Volodymyr Sapsai via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Wed Nov 7 17:21:56 PST 2018

vsapsai created this revision.
vsapsai added reviewers: bruno, benlangmuir.
Herald added subscribers: dexonsmith, hiraditya.

It fixes the case when Objective-C framework is added as a subframework
through a symlink. When parent framework infers a module map and fails
to detect a symlink, it would add a subframework as a submodule. And
when we parse module map for the subframework, we would encounter an
error like

> error: umbrella for module 'WithSubframework.Foo' already covers this directory

By implementing `getRealPath` "an egregious but useful hack" in
`ModuleMap::inferFrameworkModule` works as expected.




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