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diff --git a/test/SemaCXX/PR38913.cpp b/test/SemaCXX/PR38913.cpp
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+++ b/test/SemaCXX/PR38913.cpp
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+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
+
+// PR38913
+// Check that we instantiate attributes on declarations for...
+
+// ...a member class of a class template specialization
+template<class T> struct A { struct __attribute__((abi_tag("ATAG"))) X { }; };
+A<int>::X* a() { return 0; } // CHECK-DAG: @_Z1aB4ATAGv
+
+// ...a member class template
+template<class T> struct B { template<class U> struct __attribute__((abi_tag("BTAG"))) X { }; };
+B<int>::X<int>* b() { return 0; } // CHECK-DAG: @_Z1bB4BTAGv