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      1 // RUN: %clang_cc1 -fsyntax-only -verify %s -fblocks
      2 template<typename T>
      3 struct is_unary_block {
      4   static const bool value = false;
      5 };
      6 
      7 template<typename T, typename U>
      8 struct is_unary_block<T (^)(U)> {
      9   static const bool value = true;
     10 };
     11 
     12 int is_unary_block0[is_unary_block<int>::value ? -1 : 1];
     13 int is_unary_block1[is_unary_block<int (^)()>::value ? -1 : 1];
     14 int is_unary_block2[is_unary_block<int (^)(int, bool)>::value ? -1 : 1];
     15 int is_unary_block3[is_unary_block<int (^)(bool)>::value ? 1 : -1];
     16 int is_unary_block4[is_unary_block<int (^)(int)>::value ? 1 : -1];
     17 
     18 template<typename T>
     19 struct is_unary_block_with_same_return_type_as_argument_type {
     20   static const bool value = false;
     21 };
     22 
     23 template<typename T>
     24 struct is_unary_block_with_same_return_type_as_argument_type<T (^)(T)> {
     25   static const bool value = true;
     26 };
     27 
     28 int is_unary_block5[is_unary_block_with_same_return_type_as_argument_type<int>::value ? -1 : 1];
     29 int is_unary_block6[is_unary_block_with_same_return_type_as_argument_type<int (^)()>::value ? -1 : 1];
     30 int is_unary_block7[is_unary_block_with_same_return_type_as_argument_type<int (^)(int, bool)>::value ? -1 : 1];
     31 int is_unary_block8[is_unary_block_with_same_return_type_as_argument_type<int (^)(bool)>::value ? -1 : 1];
     32 int is_unary_block9[is_unary_block_with_same_return_type_as_argument_type<int (^)(int)>::value ? 1 : -1];
     33 int is_unary_block10[is_unary_block_with_same_return_type_as_argument_type<int (^)(int, ...)>::value ? -1 : 1];
     34 int is_unary_block11[is_unary_block_with_same_return_type_as_argument_type<int (^ const)(int)>::value ? -1 : 1];
     35