1 files changed, 30 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/template/const1.C b/gcc/testsuite/g++.dg/template/const1.C
new file mode 100644
index 000000000..629c4d4a9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/const1.C
@@ -0,0 +1,30 @@
+// PR c++/28385
+// instantiating op() with void()() was making the compiler think that 'fcn'
+// was const, so it could eliminate the call.
+
+// { dg-do run }
+
+extern "C" void abort (void);
+
+int barcnt = 0;
+
+class Foo {
+  public:
+    template<typename T>
+    void operator()(const T& fcn) {
+      fcn();
+    }
+};
+
+void bar() {
+  barcnt++;
+}
+
+int main() {
+  Foo myFoo;
+  myFoo(bar);
+  myFoo(&bar);
+  if (barcnt != 2)
+    abort ();
+  return 0;
+}