Vendor import of clang trunk r126079:

http://llvm.org/svn/llvm-project/cfe/trunk@126079

1 files changed, 50 insertions, 0 deletions

diff --git a/test/CXX/temp/temp.decls/temp.variadic/deduction.cpp b/test/CXX/temp/temp.decls/temp.variadic/deduction.cpp
new file mode 100644
index 0000000..383e268
--- /dev/null
+++ b/test/CXX/temp/temp.decls/temp.variadic/deduction.cpp
@@ -0,0 +1,50 @@
+// RUN: %clang_cc1 -std=c++0x -fsyntax-only -verify %s
+
+namespace DeductionForInstantiation {
+  template<unsigned I, typename ...Types>
+  struct X { };
+
+  template<typename ...Types>
+  void f0(X<sizeof...(Types), Types&...>) { }
+
+  // No explicitly-specified arguments
+  template void f0(X<0>);
+  template void f0(X<1, int&>);
+  template void f0(X<2, int&, short&>);
+
+  // One explicitly-specified argument
+  template void f0<float>(X<1, float&>);
+  template void f0<double>(X<1, double&>);
+
+  // Two explicitly-specialized arguments
+  template void f0<char, unsigned char>(X<2, char&, unsigned char&>);
+  template void f0<signed char, char>(X<2, signed char&, char&>);
+
+  // FIXME: Extension of explicitly-specified arguments
+  //  template void f0<short, int>(X<3, short&, int&, long&>);
+}
+
+namespace DeductionWithConversion {
+  template<char...> struct char_values {
+    static const unsigned value = 0;
+  };
+
+  template<int C1, char C3>
+  struct char_values<C1, 12, C3> {
+    static const unsigned value = 1;
+  };
+
+  int check0[char_values<1, 12, 3>::value == 1? 1 : -1];
+
+  template<int...> struct int_values {
+    static const unsigned value = 0;
+  };
+
+  template<unsigned char C1, unsigned char C3>
+  struct int_values<C1, 12, C3> {
+    static const unsigned value = 1;
+  };
+
+  int check1[int_values<256, 12, 3>::value == 0? 1 : -1];  
+  int check2[int_values<3, 12, 3>::value == 1? 1 : -1];  
+}