1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/tc1/dr185.C b/gcc/testsuite/g++.dg/tc1/dr185.C
new file mode 100644
index 000000000..2cd4e397f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/tc1/dr185.C
@@ -0,0 +1,26 @@
+// { dg-do run }
+// Origin: Giovanni Bajo <giovannibajo at gcc dot gnu dot org>
+// DR185: "Named" temporaries and copy elision 
+
+extern "C" void abort(void);
+
+struct A {
+  mutable int value;
+  explicit A(int i) : value(i) {}
+  void mutate(int i) const { value = i; }
+};
+
+int foo() {
+  A const& t = A(1);
+  A n(t);          // can this copy be elided? NO!
+  t.mutate(2);
+  return n.value;  // can this return 2? NO!
+}
+
+int main()
+{
+  int x = foo();
+  if (x != 1)
+    abort();
+  return 0;
+}