This test was failing in our CI environment, because Jenkins mounts the workspaces into Docker containers using their full path, i.e. /home/jenkins/workspaces/llvm-build.
We've seen permission denied errors because /home/jenkins is mounted with root permissions and the default cache directory under Linux is $HOME/.cache.
The fix is to explicitly provide the -fmodules-cache-path, which the other tests already seem to provide.
Reviewed By: akyrtzi
Differential Revision: https://reviews.llvm.org/D89453
ObjCContainerDecl.getMethod returns a nullptr by default when the
container is a hidden prototype. Callsites where the method is being
looked up on the redeclaration's own container should skip this check
since they (rightly) expect a valid method to be found.
Resolves rdar://69444243
Reviewed By: akyrtzi
Differential Revision: https://reviews.llvm.org/D89024
Konstantin Schwarz