From 4a6268f0d37f377181f972ed307d2a074e8e1b6a Mon Sep 17 00:00:00 2001
From: Stephan Bergmann <sbergman@redhat.com>
Date: Thu, 19 Nov 2015 09:19:30 +0100
Subject: [PATCH] Adapt compilerplugins to old Clang versions

Change-Id: I91335f1e81e251f0578792517dded9fae239fb61
---
 compilerplugins/clang/compat.hxx    | 9 +++++++++
 compilerplugins/clang/typecheck.hxx | 6 +++---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/compilerplugins/clang/compat.hxx b/compilerplugins/clang/compat.hxx
index 6b1451000ff6..0a16a3c99c2e 100644
--- a/compilerplugins/clang/compat.hxx
+++ b/compilerplugins/clang/compat.hxx
@@ -41,6 +41,15 @@
 // Compatibility wrapper to abstract over (trivial) changes in the Clang API:
 namespace compat {
 
+inline bool isLookupContext(clang::DeclContext const & ctxt) {
+#if (__clang_major__ == 3 && __clang_minor__ > 7) || __clang_major__ > 3
+    return ctxt.isLookupContext();
+#else
+    return !ctxt.isFunctionOrMethod()
+        && ctxt.getDeclKind() != clang::Decl::LinkageSpec;
+#endif
+}
+
 inline bool isExternCContext(clang::DeclContext const & ctxt) {
 #if (__clang_major__ == 3 && __clang_minor__ >= 4) || __clang_major__ > 3
     return ctxt.isExternCContext();
diff --git a/compilerplugins/clang/typecheck.hxx b/compilerplugins/clang/typecheck.hxx
index 6ab8f74e1aad..35d4e5769b6e 100644
--- a/compilerplugins/clang/typecheck.hxx
+++ b/compilerplugins/clang/typecheck.hxx
@@ -12,11 +12,11 @@
 
 #include <cstddef>
 
-#include <iostream>
-
 #include <clang/AST/DeclBase.h>
 #include <clang/AST/Type.h>
 
+#include "compat.hxx"
+
 namespace loplugin {
 
 class NamespaceCheck;
@@ -72,7 +72,7 @@ public:
     TerminalCheck GlobalNamespace() const {
         return TerminalCheck(
             context_ != nullptr
-            && ((context_->isLookupContext()
+            && ((compat::isLookupContext(*context_)
                  ? context_ : context_->getLookupParent())
                 ->isTranslationUnit()));
     }