Patchwork [C++,testcase] PR 51878

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Submitter Paolo Carlini
Date Oct. 11, 2012, 11:41 p.m.
Message ID <5077591D.10503@oracle.com>
Download mbox | patch
Permalink /patch/191024/
State New
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Comments

Paolo Carlini - Oct. 11, 2012, 11:41 p.m.
Hi,

testcase committed, closed as fixed in 4.8.0.

Thanks,
Paolo.

//////////////////////
2012-10-11  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51878
	* g++.dg/cpp0x/decltype45.C: New.

Patch

Index: g++.dg/cpp0x/decltype45.C
===================================================================
--- g++.dg/cpp0x/decltype45.C	(revision 0)
+++ g++.dg/cpp0x/decltype45.C	(working copy)
@@ -0,0 +1,40 @@ 
+// PR c++/51878
+// { dg-do compile { target c++11 } }
+
+template<class F, class... T>
+auto indirect_call(F f, T... t) -> decltype(f(t...))
+{
+  return f(t...);
+}
+
+template<class F, class T>
+struct VariadicBind
+{
+  F f;
+  T t;
+
+  template<class... A>
+  auto operator()(A... a) -> decltype(indirect_call(f, t, a...))
+  {
+    return indirect_call(f, t, a...);
+  }
+};
+
+template<class F>
+void apply(F f)
+{
+  f();
+}
+
+template<class F, class V1, class... V>
+void apply(F f, V1 v1, V... v)
+{
+  apply(VariadicBind<F, int>{f, v1}, v...);
+}
+
+void func(int, int) { }
+
+int main()
+{
+  apply(func, 0, 0);
+}