Index: testsuite/g++.dg/tm/pr51411-2.C
===================================================================
--- testsuite/g++.dg/tm/pr51411-2.C	(revision 0)
+++ testsuite/g++.dg/tm/pr51411-2.C	(revision 0)
@@ -0,0 +1,49 @@
+// { dg-do compile }
+// { dg-options "-fgnu-tm -O0" }
+
+namespace std {
+template<typename _CharT> struct char_traits;
+
+template<typename _Tp> class allocator {
+};
+
+template<typename _Tp> struct less {
+    bool operator()(const _Tp& __x, const _Tp& __y) const {
+        return __x < __y;
+    }
+};
+
+template <typename _Key, typename _Compare = std::less<_Key> > class map {
+public:
+    _Compare _M_key_compare;
+    bool find(const _Key& __x) {
+        return _M_key_compare(__x, __x);
+    }
+};
+
+template<typename _CharT, typename _Traits = char_traits<_CharT>, typename _Alloc = allocator<_CharT> > class basic_string {
+public:
+    bool compare(const basic_string& __str) const {
+        return 0;
+    }
+};
+
+typedef basic_string<char> string;
+
+template<typename _CharT, typename _Traits>
+inline bool operator<(const basic_string<_CharT, _Traits>& __lhs, const basic_string<_CharT, _Traits>& __rhs) {
+    return __lhs.compare(__rhs);
+}
+
+extern template class basic_string<char>;
+
+}
+
+std::map<std::string> units;
+
+__attribute__((transaction_callable))
+void get(const std::string &name) {
+    units.find(name);
+}
+
+// { dg-final { scan-assembler "_ZGTtNKSs7compareERKSs:" } }
Index: testsuite/g++.dg/tm/pr51411.C
===================================================================
--- testsuite/g++.dg/tm/pr51411.C	(revision 0)
+++ testsuite/g++.dg/tm/pr51411.C	(revision 0)
@@ -0,0 +1,7 @@
+// { dg-do compile }
+// { dg-options "-fgnu-tm -O" }
+
+struct A
+{
+  __attribute__ ((transaction_safe)) virtual void virtfoo () { }
+};
Index: trans-mem.c
===================================================================
--- trans-mem.c	(revision 182491)
+++ trans-mem.c	(working copy)
@@ -4260,6 +4260,7 @@ ipa_tm_create_version (struct cgraph_nod
 	{
 	  DECL_EXTERNAL (new_decl) = 0;
 	  TREE_PUBLIC (new_decl) = 0;
+	  DECL_WEAK (new_decl) = 0;
 	}
 
       tree_function_versioning (old_decl, new_decl, NULL, false, NULL,