llvm-project

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// RUN: %clang_cc1 -pedantic-errors -fblocks -std=c++1y -emit-pch %s -o %t-cxx1y
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// RUN: %clang_cc1 -ast-print -pedantic-errors -fblocks -std=c++1y -include-pch %t-cxx1y  %s | FileCheck -check-prefix=CHECK-PRINT %s
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#ifndef HEADER_INCLUDED
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#define HEADER_INCLUDED
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template<typename T>
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T add_slowly(const T& x, const T &y) {
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  return [](auto z, int y = 0) { return z + y; }(5);
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};
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inline int add_int_slowly_twice(int x, int y) {
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  int i = add_slowly(x, y);
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  auto lambda = [](auto z) { return z + z; };
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  return i + lambda(y);
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}
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inline int sum_array(int n) {
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  auto lambda = [](auto N) -> int {
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    int sum = 0;
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    int array[5] = { 1, 2, 3, 4, 5};
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    for (unsigned I = 0; I < N; ++I)
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      sum += array[N];
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    return sum;
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  };
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  return lambda(n);
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}
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inline int to_block_pointer(int n) {
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  auto lambda = [=](int m) { return n + m; };
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  int (^block)(int) = lambda;
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  return block(17);
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}
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template<typename T>
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int init_capture(T t) {
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  return [&, x(t)] { return sizeof(x); };
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}
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auto with_pack = [](auto ...xs){};
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#else
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// CHECK-PRINT: T add_slowly
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// CHECK-PRINT: return []
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template float add_slowly(const float&, const float&);
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int add(int x, int y) {
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  return add_int_slowly_twice(x, y) + sum_array(4) + to_block_pointer(5);
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}
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// CHECK-PRINT: inline int add_int_slowly_twice 
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// CHECK-PRINT: lambda = [](auto z
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// CHECK-PRINT: init_capture
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// CHECK-PRINT: [&, x(t)]
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void use_with_pack() { with_pack(1, 2, 3); }
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#endif
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