Process attributes in explicit template instatiation definitions. Fixes PR11690.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147441 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplate.cpp b/lib/Sema/SemaTemplate.cpp
index b0006e6..e90821e 100644
--- a/lib/Sema/SemaTemplate.cpp
+++ b/lib/Sema/SemaTemplate.cpp
@@ -5988,6 +5988,9 @@
   Specialization->setExternLoc(ExternLoc);
   Specialization->setTemplateKeywordLoc(TemplateLoc);
 
+  if (Attr)
+    ProcessDeclAttributeList(S, Specialization, Attr);
+
   // Add the explicit instantiation into its lexical context. However,
   // since explicit instantiations are never found by name lookup, we
   // just put it into the declaration context directly.