Ben Barham fbb499ef25 [AST] Fix crashes caused by redeclarations in hidden prototypes
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
2020-10-08 19:48:36 -07:00

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// See vfsoverlay.yaml
module ModuleNeedsVFS {
header "ModuleNeedsVFS.h"
export *
}
framework module * { }
module ModuleUndef { header "module-undef.h" }
module PreambleWithImplicitImport {
module A {
header "preamble-with-implicit-import-A.h"
}
module B {
header "preamble-with-implicit-import-B.h"
export *
}
module C {
header "preamble-with-implicit-import-C.h"
export *
}
}
module hidden_redecls {
header "hidden-redecls.h"
explicit module sub {
header "hidden-redecls-sub.h"
}
}