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diff --git a/‎libcxx/include/format
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diff --git a/‎libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/advance_to.pass.cpp
Lines changed: 0 additions & 67 deletions b/‎libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/advance_to.pass.cpp
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diff --git a/‎libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/begin.pass.cpp
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diff --git a/‎libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/check_arg_id.pass.cpp
Lines changed: 0 additions & 68 deletions b/‎libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/check_arg_id.pass.cpp
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@@ -19,51 +19,14 @@ namespace std {
     explicit format_error(const string& what_arg);
     explicit format_error(const char* what_arg);
   };
-
-  // [format.parse.ctx], class template basic_format_parse_context
-  template<class charT>
-  class basic_format_parse_context {
-  public:
-    using char_type = charT;
-    using const_iterator = typename basic_string_view<charT>::const_iterator;
-    using iterator = const_iterator;
-
-  private:
-    iterator begin_;                                    // exposition only
-    iterator end_;                                      // exposition only
-    enum indexing { unknown, manual, automatic };       // exposition only
-    indexing indexing_;                                 // exposition only
-    size_t next_arg_id_;                                // exposition only
-    size_t num_args_;                                   // exposition only
-
-  public:
-    constexpr explicit basic_format_parse_context(basic_string_view<charT> fmt,
-                                                  size_t num_args = 0) noexcept;
-    basic_format_parse_context(const basic_format_parse_context&) = delete;
-    basic_format_parse_context& operator=(const basic_format_parse_context&) = delete;
-
-    constexpr const_iterator begin() const noexcept;
-    constexpr const_iterator end() const noexcept;
-    constexpr void advance_to(const_iterator it);
-
-    constexpr size_t next_arg_id();
-    constexpr void check_arg_id(size_t id);
-  };
-  using format_parse_context = basic_format_parse_context<char>;
-  using wformat_parse_context = basic_format_parse_context<wchar_t>;
 }
 
 */
 
 #include <__config>
 #include <stdexcept>
-#include <string_view>
 #include <version>
 
-#ifdef _LIBCPP_NO_EXCEPTIONS
-#include <cstdlib>
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
 #endif
@@ -84,88 +47,6 @@ public:
   virtual ~format_error() noexcept;
 };
 
-_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY void
-__throw_format_error(const char* __s) {
-#ifndef _LIBCPP_NO_EXCEPTIONS
-  throw format_error(__s);
-#else
-  (void)__s;
-  _VSTD::abort();
-#endif
-}
-
-template <class _CharT>
-class _LIBCPP_TEMPLATE_VIS basic_format_parse_context {
-public:
-  using char_type = _CharT;
-  using const_iterator =
-      typename _VSTD::basic_string_view<_CharT>::const_iterator;
-  using iterator = const_iterator;
-
-public:
-  _LIBCPP_INLINE_VISIBILITY
-  constexpr explicit basic_format_parse_context(
-      _VSTD::basic_string_view<_CharT> __fmt, size_t __num_args = 0) noexcept
-      : __begin_(__fmt.begin()),
-        __end_(__fmt.end()),
-        __indexing_(__unknown),
-        __next_arg_id_(0),
-        __num_args_(__num_args) {}
-
-  basic_format_parse_context(const basic_format_parse_context&) = delete;
-  basic_format_parse_context&
-  operator=(const basic_format_parse_context&) = delete;
-
-  _LIBCPP_INLINE_VISIBILITY constexpr const_iterator begin() const noexcept {
-    return __begin_;
-  }
-  _LIBCPP_INLINE_VISIBILITY constexpr const_iterator end() const noexcept {
-    return __end_;
-  }
-  _LIBCPP_INLINE_VISIBILITY constexpr void advance_to(const_iterator __it) {
-    __begin_ = __it;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY constexpr size_t next_arg_id() {
-    if (__indexing_ == __manual)
-      __throw_format_error("Using automatic argument numbering in manual "
-                           "argument numbering mode");
-
-    if (__indexing_ == __unknown)
-      __indexing_ = __automatic;
-    return __next_arg_id_++;
-  }
-  _LIBCPP_INLINE_VISIBILITY constexpr void check_arg_id(size_t __id) {
-    if (__indexing_ == __automatic)
-      __throw_format_error("Using manual argument numbering in automatic "
-                           "argument numbering mode");
-
-    if (__indexing_ == __unknown)
-      __indexing_ = __manual;
-
-	// Throws an exception to make the expression a non core constant
-	// expression as required by:
-	// [format.parse.ctx]/11
-	//   Remarks: Call expressions where id >= num_args_ are not core constant
-	//   expressions ([expr.const]).
-	// Note: the Throws clause [format.parse.ctx]/10 doesn't specify the
-	// behavior when id >= num_args_.
-    if (_VSTD::is_constant_evaluated() && __id >= __num_args_)
-      __throw_format_error("Argument index outside the valid range");
-  }
-
-private:
-  iterator __begin_;
-  iterator __end_;
-  enum _Indexing { __unknown, __manual, __automatic };
-  _Indexing __indexing_;
-  size_t __next_arg_id_;
-  size_t __num_args_;
-};
-
-using format_parse_context = basic_format_parse_context<char>;
-using wformat_parse_context = basic_format_parse_context<wchar_t>;
-
 #endif //_LIBCPP_STD_VER > 17
 
 _LIBCPP_END_NAMESPACE_STD