Serialize the "inline" bit for namespaces. Fixes <rdar://problem/8515069>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115667 91177308-0d34-0410-b5e6-96231b3b80d8

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(

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);

test/PCH/Inputs/namespaces.h

@@ -38,3 +38,7 @@ using namespace N2::Inner;
 extern "C" {
   void ext();
 }
+
+inline namespace N4 { 
+  struct MemberOfN4;
+}

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;