gulfem added a comment.

> Then pipe that to a file (note the -E I added at the end).  You should get a 
> file that looks like some slightly-wonky C++ code.

I got the following output after running it via `-E`.

  
/usr/local/google/home/gulfem/llvm-clean/llvm-project/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_range.compile.pass.cpp:15:10:
 fatal error: 'memory' file not found
  #include <memory>
           ^~~~~~~~
  # 1 
"/usr/local/google/home/gulfem/llvm-clean/llvm-project/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_range.compile.pass.cpp"
  # 1 "<built-in>" 1
  # 1 "<built-in>" 3
  # 434 "<built-in>" 3
  # 1 "<command line>" 1
  # 1 "<built-in>" 2
  # 1 
"/usr/local/google/home/gulfem/llvm-clean/llvm-project/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_range.compile.pass.cpp"
 2
  # 21 
"/usr/local/google/home/gulfem/llvm-clean/llvm-project/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_range.compile.pass.cpp"
  template <typename>
  struct ForwardProxyIterator {
    using value_type = int;
    using difference_type = int;
    ForwardProxyIterator& operator++();
    ForwardProxyIterator operator++(int);
    bool operator==(const ForwardProxyIterator&) const;
  
    int operator*() const;
  };
  
  
static_assert(std::ranges::__nothrow_forward_range<test_range<forward_iterator>>);
  
static_assert(!std::ranges::__nothrow_forward_range<test_range<cpp20_input_iterator>>);
  static_assert(std::ranges::forward_range<test_range<ForwardProxyIterator>>);
  
static_assert(!std::ranges::__nothrow_forward_range<test_range<ForwardProxyIterator>>);
  
  constexpr bool forward_subsumes_input(std::ranges::__nothrow_forward_range 
auto&&) {
    return true;
  }
  constexpr bool forward_subsumes_input(std::ranges::__nothrow_input_range 
auto&&);
  
  static_assert(forward_subsumes_input("foo"));
  1 error generated.

Would that be enough?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D119544/new/

https://reviews.llvm.org/D119544

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