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[cpp.predefined]

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tmp/tmpv2sd6a2q/{from.md → to.md} RENAMED
@@ -2,11 +2,15 @@
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  The following macro names shall be defined by the implementation:
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  - **`__cplusplus`**
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- The integer literal `202302L`.[^9]
 
 
 
 
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  - **`__DATE__`**
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  The date of translation of the source file: a character string literal
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  of the form `"Mmm dd yyyy"`, where the names of the months are the same
@@ -16,16 +20,16 @@ translation is not available, an *implementation-defined* valid date
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  shall be supplied.
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  - **`__FILE__`**
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  The presumed name of the current source file (a character string
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- literal). [^10]
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  - **`__LINE__`**
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  The presumed line number (within the current source file) of the current
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- source line (an integer literal). [^11]
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  - **`__STDC_HOSTED__`**
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  The integer literal `1` if the implementation is a hosted implementation
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  or the integer literal `0` if it is not.
@@ -34,21 +38,93 @@ or the integer literal `0` if it is not.
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  An integer literal of type `std::size_t` whose value is the alignment
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  guaranteed by a call to `operator new(std::size_t)` or
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  `operator new[](std::size_t)`.
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- [*Note 1*: Larger alignments will be passed to
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- `operator new(std::size_t, std::align_val_t)`, etc. (
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- [[expr.new]]). — *end note*]
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  - **`__TIME__`**
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  The time of translation of the source file: a character string literal
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  of the form `"hh:mm:ss"` as in the time generated by the `asctime`
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  function. If the time of translation is not available, an
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  *implementation-defined* valid time shall be supplied.
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  The following macro names are conditionally defined by the
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  implementation:
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  - **`__STDC__`**
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@@ -70,25 +146,24 @@ are *implementation-defined*.
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  - **`__STDC_ISO_10646__`**
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  An integer literal of the form `yyyymmL` (for example, `199712L`). If
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  this symbol is defined, then every character in the Unicode required
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  set, when stored in an object of type `wchar_t`, has the same value as
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- the short identifier of that character. The *Unicode required set*
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- consists of all the characters that are defined by ISO/IEC 10646, along
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- with all amendments and technical corrigenda as of the specified year
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- and month.
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  - **`__STDCPP_STRICT_POINTER_SAFETY__`**
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  Defined, and has the value integer literal 1, if and only if the
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- implementation has strict pointer safety (
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- [[basic.stc.dynamic.safety]]).
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  - **`__STDCPP_THREADS__`**
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  Defined, and has the value integer literal 1, if and only if a program
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- can have more than one thread of execution ([[intro.multithread]]).
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  The values of the predefined macros (except for `__FILE__` and
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  `__LINE__`) remain constant throughout the translation unit.
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  If any of the pre-defined macro names in this subclause, or the
 
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  The following macro names shall be defined by the implementation:
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  - **`__cplusplus`**
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+ The integer literal `202302L`.
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+
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+ [*Note 1*: It is intended that future versions of this International
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+ Standard will replace the value of this macro with a greater
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+ value. — *end note*]
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  - **`__DATE__`**
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  The date of translation of the source file: a character string literal
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  of the form `"Mmm dd yyyy"`, where the names of the months are the same
 
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  shall be supplied.
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  - **`__FILE__`**
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  The presumed name of the current source file (a character string
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+ literal). [^9]
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  - **`__LINE__`**
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  The presumed line number (within the current source file) of the current
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+ source line (an integer literal). [^10]
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  - **`__STDC_HOSTED__`**
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  The integer literal `1` if the implementation is a hosted implementation
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  or the integer literal `0` if it is not.
 
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  An integer literal of type `std::size_t` whose value is the alignment
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  guaranteed by a call to `operator new(std::size_t)` or
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  `operator new[](std::size_t)`.
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+ [*Note 2*: Larger alignments will be passed to
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+ `operator new(std::size_t, std::align_val_t)`, etc.
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+ [[expr.new]]. — *end note*]
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  - **`__TIME__`**
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  The time of translation of the source file: a character string literal
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  of the form `"hh:mm:ss"` as in the time generated by the `asctime`
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  function. If the time of translation is not available, an
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  *implementation-defined* valid time shall be supplied.
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+ - **The names listed in [[cpp.predefined.ft]].**
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+
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+ The macros defined in [[cpp.predefined.ft]] shall be defined to the
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+ corresponding integer literal.
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+
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+ [*Note 3*: Future versions of this International Standard might replace
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+ the values of these macros with greater values. — *end note*]
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+
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+ **Table: Feature-test macros** <a id="cpp.predefined.ft">[cpp.predefined.ft]</a>
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+
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+ | Macro name | Value |
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+ | --------------------------------------- | --------- |
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+ | `__cpp_aggregate_bases` | `201603L` |
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+ | `__cpp_aggregate_nsdmi` | `201304L` |
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+ | `__cpp_aggregate_paren_init` | `201902L` |
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+ | `__cpp_alias_templates` | `200704L` |
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+ | `__cpp_aligned_new` | `201606L` |
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+ | `__cpp_attributes` | `200809L` |
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+ | `__cpp_binary_literals` | `201304L` |
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+ | `__cpp_capture_star_this` | `201603L` |
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+ | `__cpp_char8_t` | `201811L` |
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+ | `__cpp_concepts` | `201907L` |
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+ | `__cpp_conditional_explicit` | `201806L` |
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+ | `__cpp_constexpr` | `201907L` |
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+ | `__cpp_constexpr_dynamic_alloc` | `201907L` |
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+ | `__cpp_constexpr_in_decltype` | `201711L` |
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+ | `__cpp_consteval` | `201811L` |
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+ | `__cpp_constinit` | `201907L` |
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+ | `__cpp_decltype` | `200707L` |
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+ | `__cpp_decltype_auto` | `201304L` |
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+ | `__cpp_deduction_guides` | `201907L` |
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+ | `__cpp_delegating_constructors` | `200604L` |
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+ | `__cpp_designated_initializers` | `201707L` |
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+ | `__cpp_enumerator_attributes` | `201411L` |
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+ | `__cpp_fold_expressions` | `201603L` |
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+ | `__cpp_generic_lambdas` | `201707L` |
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+ | `__cpp_guaranteed_copy_elision` | `201606L` |
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+ | `__cpp_hex_float` | `201603L` |
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+ | `__cpp_if_constexpr` | `201606L` |
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+ | `__cpp_impl_coroutine` | `201902L` |
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+ | `__cpp_impl_destroying_delete` | `201806L` |
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+ | `__cpp_impl_three_way_comparison` | `201907L` |
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+ | `__cpp_inheriting_constructors` | `201511L` |
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+ | `__cpp_init_captures` | `201803L` |
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+ | `__cpp_initializer_lists` | `200806L` |
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+ | `__cpp_inline_variables` | `201606L` |
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+ | `__cpp_lambdas` | `200907L` |
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+ | `__cpp_modules` | `201907L` |
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+ | `__cpp_namespace_attributes` | `201411L` |
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+ | `__cpp_noexcept_function_type` | `201510L` |
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+ | `__cpp_nontype_template_args` | `201911L` |
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+ | `__cpp_nontype_template_parameter_auto` | `201606L` |
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+ | `__cpp_nsdmi` | `200809L` |
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+ | `__cpp_range_based_for` | `201603L` |
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+ | `__cpp_raw_strings` | `200710L` |
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+ | `__cpp_ref_qualifiers` | `200710L` |
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+ | `__cpp_return_type_deduction` | `201304L` |
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+ | `__cpp_rvalue_references` | `200610L` |
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+ | `__cpp_sized_deallocation` | `201309L` |
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+ | `__cpp_static_assert` | `201411L` |
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+ | `__cpp_structured_bindings` | `201606L` |
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+ | `__cpp_template_template_args` | `201611L` |
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+ | `__cpp_threadsafe_static_init` | `200806L` |
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+ | `__cpp_unicode_characters` | `200704L` |
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+ | `__cpp_unicode_literals` | `200710L` |
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+ | `__cpp_user_defined_literals` | `200809L` |
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+ | `__cpp_using_enum` | `201907L` |
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+ | `__cpp_variable_templates` | `201304L` |
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+ | `__cpp_variadic_templates` | `200704L` |
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+ | `__cpp_variadic_using` | `201611L` |
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+
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+
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  The following macro names are conditionally defined by the
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  implementation:
128
 
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  - **`__STDC__`**
130
 
 
146
  - **`__STDC_ISO_10646__`**
147
 
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  An integer literal of the form `yyyymmL` (for example, `199712L`). If
149
  this symbol is defined, then every character in the Unicode required
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  set, when stored in an object of type `wchar_t`, has the same value as
151
+ the code point of that character. The *Unicode required set* consists of
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+ all the characters that are defined by ISO/IEC 10646, along with all
153
+ amendments and technical corrigenda as of the specified year and month.
 
154
 
155
  - **`__STDCPP_STRICT_POINTER_SAFETY__`**
156
 
157
  Defined, and has the value integer literal 1, if and only if the
158
+ implementation has strict pointer safety
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+ [[basic.stc.dynamic.safety]].
160
 
161
  - **`__STDCPP_THREADS__`**
162
 
163
  Defined, and has the value integer literal 1, if and only if a program
164
+ can have more than one thread of execution [[intro.multithread]].
165
 
166
  The values of the predefined macros (except for `__FILE__` and
167
  `__LINE__`) remain constant throughout the translation unit.
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169
  If any of the pre-defined macro names in this subclause, or the