Set the correct anonymous namespace (must be last reopening), and behave correctly in the presence of the ever-annoying linkage specifications.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130105 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/PCH/chain-late-anonymous-namespace.cpp b/test/PCH/chain-late-anonymous-namespace.cpp
index 5369947..87205c6 100644
--- a/test/PCH/chain-late-anonymous-namespace.cpp
+++ b/test/PCH/chain-late-anonymous-namespace.cpp
@@ -6,6 +6,7 @@
 #define PASS1
 
 namespace ns {}
+namespace os {}
 
 #elif !defined(PASS2)
 #define PASS2
@@ -19,6 +20,16 @@
 namespace {
   extern int y;
 }
+namespace {
+}
+
+namespace os {
+  extern "C" {
+    namespace {
+      extern int z;
+    }
+  }
+}
 
 #else
 
@@ -38,4 +49,13 @@
   (void)y;
 }
 
+namespace os {
+  namespace {
+    int z;
+  }
+  void test() {
+    (void)z;
+  }
+}
+
 #endif