1 files changed, 37 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/tree-ssa/pr20458.C b/gcc/testsuite/g++.dg/tree-ssa/pr20458.C
new file mode 100644
index 00000000000..d4e7d1a1a86
--- /dev/null
+++ b/gcc/testsuite/g++.dg/tree-ssa/pr20458.C
@@ -0,0 +1,37 @@
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+/* The tail call optimization would inapproriately tail call the 
+   destructors due to not recognizing a call clobbered variable */
+namespace std
+{
+	class locale
+	{
+		public:
+			locale();
+			~locale();
+	};
+}
+
+struct B
+{
+	std::locale _M_buf_locale;
+	virtual ~B() {}
+};
+
+struct C : public B
+{
+	char *s;
+};
+
+void foo ()
+{
+	C c;
+}
+
+int main()
+{
+	foo ();
+	return 0;
+}
+