From 29cda59a9d79b725229948b27c90c5ba9a554e0c Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Mon, 15 Apr 2013 12:38:20 +0000
Subject: [PATCH] Fix the storage class of method instantiations.

We keep the "as written" storage class, but that is a fuzzy concept for
instantiations. With this patch instantiations of methods of class templates
now get a storage class that is based on the semantics of isStatic(). With this
can simplify isStatic() itself.

llvm-svn: 179521
---
 clang/lib/AST/DeclCXX.cpp                      | 15 +--------------
 clang/lib/Sema/SemaTemplateInstantiateDecl.cpp |  4 ++--
 2 files changed, 3 insertions(+), 16 deletions(-)

diff --git a/clang/lib/AST/DeclCXX.cpp b/clang/lib/AST/DeclCXX.cpp
index c8a203a..2c7c4d3 100644
--- a/clang/lib/AST/DeclCXX.cpp
+++ b/clang/lib/AST/DeclCXX.cpp
@@ -1258,20 +1258,7 @@ bool CXXRecordDecl::mayBeAbstract() const {
 void CXXMethodDecl::anchor() { }
 
 bool CXXMethodDecl::isStatic() const {
-  const CXXMethodDecl *MD = this;
-  for (;;) {
-    const CXXMethodDecl *C = MD->getCanonicalDecl();
-    if (C != MD) {
-      MD = C;
-      continue;
-    }
-
-    FunctionTemplateSpecializationInfo *Info =
-      MD->getTemplateSpecializationInfo();
-    if (!Info)
-      break;
-    MD = cast<CXXMethodDecl>(Info->getTemplate()->getTemplatedDecl());
-  }
+  const CXXMethodDecl *MD = getCanonicalDecl();
 
   if (MD->getStorageClass() == SC_Static)
     return true;
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 868369e..2dbfeec 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -1530,10 +1530,10 @@ TemplateDeclInstantiator::VisitCXXMethodDecl(CXXMethodDecl *D,
                                        Conversion->isConstexpr(),
                                        Conversion->getLocEnd());
   } else {
+    StorageClass SC = D->isStatic() ? SC_Static : SC_None;
     Method = CXXMethodDecl::Create(SemaRef.Context, Record,
                                    StartLoc, NameInfo, T, TInfo,
-                                   D->getStorageClass(),
-                                   D->isInlineSpecified(),
+                                   SC, D->isInlineSpecified(),
                                    D->isConstexpr(), D->getLocEnd());
   }
 
-- 
2.7.4