From b52119637f743680a99710ce5fdb6646da2772af Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Mar 09 2017 22:50:47 +0000
Subject: Vendor import of clang 4.0.0 release r297347:

https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_400/final@297347

---

diff --git a/lib/Basic/Version.cpp b/lib/Basic/Version.cpp
index b91efeb..97e75a9 100644
--- a/lib/Basic/Version.cpp
+++ b/lib/Basic/Version.cpp
@@ -36,7 +36,7 @@ std::string getClangRepositoryPath() {
 
   // If the SVN_REPOSITORY is empty, try to use the SVN keyword. This helps us
   // pick up a tag in an SVN export, for example.
-  StringRef SVNRepository("$URL: https://llvm.org/svn/llvm-project/cfe/branches/release_40/lib/Basic/Version.cpp $");
+  StringRef SVNRepository("$URL: https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_400/final/lib/Basic/Version.cpp $");
   if (URL.empty()) {
     URL = SVNRepository.slice(SVNRepository.find(':'),
                               SVNRepository.find("/lib/Basic"));
diff --git a/lib/Serialization/ASTReaderDecl.cpp b/lib/Serialization/ASTReaderDecl.cpp
index c691919..707a924 100644
--- a/lib/Serialization/ASTReaderDecl.cpp
+++ b/lib/Serialization/ASTReaderDecl.cpp
@@ -2513,8 +2513,8 @@ static bool isConsumerInterestedIn(ASTContext &Ctx, Decl *D, bool HasBody) {
 
   // An ImportDecl or VarDecl imported from a module will get emitted when
   // we import the relevant module.
-  if ((isa<ImportDecl>(D) || isa<VarDecl>(D)) && Ctx.DeclMustBeEmitted(D) &&
-      D->getImportedOwningModule())
+  if ((isa<ImportDecl>(D) || isa<VarDecl>(D)) && D->getImportedOwningModule() &&
+      Ctx.DeclMustBeEmitted(D))
     return false;
 
   if (isa<FileScopeAsmDecl>(D) || 
diff --git a/test/PCH/empty-def-fwd-struct.h b/test/PCH/empty-def-fwd-struct.h
new file mode 100644
index 0000000..dda9827
--- /dev/null
+++ b/test/PCH/empty-def-fwd-struct.h
@@ -0,0 +1,12 @@
+// RUN: %clang_cc1 -emit-pch -x c++-header %s -std=c++14 -o %t.pch
+// RUN: %clang_cc1 -emit-llvm-only -x c++ /dev/null -std=c++14 -include-pch %t.pch -o %t.o
+struct FVector;
+struct FVector {};
+struct FBox {
+  FVector Min;
+  FBox(int);
+};
+namespace {
+FBox InvalidBoundingBox(0);
+}
+