[ODRHash] Fix hashing for friend functions.

When hashing a templated function, use the hash of the function it was
instantiated from.

llvm-svn: 325742

2 files changed, 6 insertions, 3 deletions

diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
index 30599ea7cfb..c4da87c013d 100644
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -3625,6 +3625,12 @@ unsigned FunctionDecl::getODRHash() {
     }
   }
 
+  if (auto *FT = getInstantiatedFromMemberFunction()) {
+    HasODRHash = true;
+    ODRHash = FT->getODRHash();
+    return ODRHash;
+  }
+
   class ODRHash Hash;
   Hash.AddFunctionDecl(this);
   HasODRHash = true;
diff --git a/clang/lib/AST/ODRHash.cpp b/clang/lib/AST/ODRHash.cpp
index 4104d3454e5..528e32aaba2 100644
--- a/clang/lib/AST/ODRHash.cpp
+++ b/clang/lib/AST/ODRHash.cpp
@@ -484,9 +484,6 @@ void ODRHash::AddFunctionDecl(const FunctionDecl *Function) {
   if (!Function->hasBody()) return;
   if (!Function->getBody()) return;
 
-  // TODO: Fix hashing friend functions.
-  if (Function->getFriendObjectKind()) return;
-
   // Skip functions that are specializations or in specialization context.
   const DeclContext *DC = Function;
   while (DC) {