4 files changed, 9 insertions, 0 deletions
diff --git a/clang/lib/Serialization/ASTReaderDecl.cpp b/clang/lib/Serialization/ASTReaderDecl.cpp
index a68f562a3f0..e42a5b4923d 100644
--- a/clang/lib/Serialization/ASTReaderDecl.cpp
+++ b/clang/lib/Serialization/ASTReaderDecl.cpp
@@ -658,6 +658,7 @@ void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
 
 void ASTDeclReader::VisitNamespaceDecl(NamespaceDecl *D) {
   VisitNamedDecl(D);
+  D->IsInline = Record[Idx++];
   D->setLBracLoc(ReadSourceLocation(Record, Idx));
   D->setRBracLoc(ReadSourceLocation(Record, Idx));
   D->setNextNamespace(
diff --git a/clang/lib/Serialization/ASTWriterDecl.cpp b/clang/lib/Serialization/ASTWriterDecl.cpp
index f8d584bb51c..07520d802b5 100644
--- a/clang/lib/Serialization/ASTWriterDecl.cpp
+++ b/clang/lib/Serialization/ASTWriterDecl.cpp
@@ -610,6 +610,7 @@ void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
 
 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) {
   VisitNamedDecl(D);
+  Record.push_back(D->isInline());
   Writer.AddSourceLocation(D->getLBracLoc(), Record);
   Writer.AddSourceLocation(D->getRBracLoc(), Record);
   Writer.AddDeclRef(D->getNextNamespace(), Record);
diff --git a/clang/test/PCH/Inputs/namespaces.h b/clang/test/PCH/Inputs/namespaces.h
index 553aadd1f9e..bd2c3ee9827 100644
--- a/clang/test/PCH/Inputs/namespaces.h
+++ b/clang/test/PCH/Inputs/namespaces.h
@@ -38,3 +38,7 @@ using namespace N2::Inner;
 extern "C" {
   void ext();
 }
+
+inline namespace N4 { 
+  struct MemberOfN4;
+}
diff --git a/clang/test/PCH/namespaces.cpp b/clang/test/PCH/namespaces.cpp
index b8a22e57a06..6dd447318a0 100644
--- a/clang/test/PCH/namespaces.cpp
+++ b/clang/test/PCH/namespaces.cpp
@@ -40,3 +40,6 @@ void (*pused)() = used_func;
 using N1::used_cls;
 used_cls s1;
 used_cls* ps1 = &s1;
+
+inline namespace N4 { }
+struct MemberOfN4 *mn4;