features_cpp29.yaml

---
features:
  - desc: "Designated-initializers for Base Classes"
    paper: P2287
    support: [GCC 17]
    ftm:
      - name: __cpp_designated_initializers
        value: 202606L

  - desc: "Clarify the behavior of floating-point overflow"
    paper: P3899
    support: [GCC 12]

  - desc: "Defaulting Postfix Increment and Decrement Operations"
    paper: P3668

  - desc: "Adding restrictions to defaulted assignment operator functions"
    paper: P2953
    support: [GCC 17]

  - desc: "Nondeterministic pointer provenance"
    paper: P2434

  - desc: "Invalid Pointer Operations"
    paper: P3347

  - desc: "Adjust identifier following new Unicode recommendations"
    paper: P3658
    support: [GCC 17, Clang 24]

  - desc: "return_value & return_void Are Not Mutually Exclusive"
    paper: P3950

  - desc: "More named universal character escapes"
    paper: P3733
    support: [GCC 17, Clang 23]
    ftm:
      - name: __cpp_named_character_escapes
        value: 202606L

  - desc: "Lexical order for lambdas"
    paper: P3847
    support: [GCC, Clang 3.1]

  - desc: "Language linkage for templates"
    paper: P2243

  - desc: "Deallocation Functions with Throwing Exception Specification Are Ill-formed"
    paper: P3424
    support: [GCC 17]

  - desc: "Conditional noexcept specifiers in compound requirements"
    paper: P3822
    ftm:
      - name: __cpp_concepts
        value: 202606L

  - desc: "Contracts for C++: Virtual functions"
    paper: P3097
    ftm:
      - name: __cpp_contracts
        value: 202606L

  - desc: "Consteval-only Values for C++26"
    paper: P4101
    ftm:
      - name: __cpp_consteval
        value: 202606L

  - desc: "Pointer lifetime-end zap proposed solutions"
    paper: P2414

  - desc: "Pack Indexing for Template Names"
    paper: P3670
    ftm:
      - name: __cpp_pack_indexing
        value: 202606L

  - desc: "#embed offset parameter"
    paper: P3540
    support: [GCC 17]
    ftm:
      - name: __cpp_pp_embed
        value: 202606L

  - desc: "Add an `iota` object for `simd` (and more)"
    paper: P3319
    lib: true
    ftm:
      - name: __cpp_lib_simd
        value: 202606L

  - desc: "The unexpected in `std::expected`"
    paper: P3798
    lib: true
    ftm:
      - name: __cpp_lib_expected
        value: 202606L

  - desc: "`view_interface::at()`"
    paper: P3052
    lib: true
    ftm:
      - name: __cpp_lib_view_interface
        value: 202606L

  - desc: "Revert string support in `std::constant_wrapper`"
    paper: P4206
    lib: true
    support: [GCC 17, Clang 23]
    ftm:
      - name: __cpp_lib_constant_wrapper
        value: 202606L

  - desc: "Fix encoding issues and add a formatter for `std::error_code`"
    paper: P3395
    lib: true

  - desc: "Fix the default floating-point representation in `std::format()`"
    paper: P3505
    lib: true
    ftm:
      - name: __cpp_lib_to_chars
        value: 202606L

  - desc: "Deprecating signed character types in iostreams"
    paper: P3154
    lib: true

  - desc: "Hazard Pointer Batches"
    paper: P3428
    lib: true
    ftm:
      - name: __cpp_lib_hazard_pointer
        value: 202606L

  - desc: "Require `[u]intptr_t`"
    paper: P3248
    lib: true

  - desc: "Better shifting"
    paper: P3793
    lib: true
    ftm:
      - name: __cpp_lib_bitops
        value: 202606L
        desc: "`std::shl` and `std::shr`"
      - name: __cpp_lib_simd_bitops
        value: 202606L
        desc: "`std::simd::shl` and `std::simd::shr`"

  - desc: "Copy and fill for `mdspan`"
    paper: P3242
    lib: true
    ftm:
      - name: __cpp_lib_mdspan_copy
        value: 202606L

  - desc: "Bit permutations"
    paper: P3104
    lib: true
    ftm:
      - name: __cpp_lib_bitops
        value: 202607L

  - desc: "`std::simd` overloads for bit permutations"
    paper: P3772
    lib: true
    ftm:
      - name: __cpp_lib_simd_bitops
        value: 202607L

  - desc: "Better Lookups for `std::map` , `std::unordered_map` , and `std::flat_map`"
    paper: P3091
    lib: true
    ftm:
      - name: __cpp_lib_map_lookup
        value: 202606L

  - desc: "`constexpr` pointer tagging"
    paper: P3125
    lib: true
    ftm:
      - name: __cpp_lib_pointer_tag_pair
        value: 202606L

  - desc: "Thread attributes"
    paper: P2019
    lib: true
    ftm:
      - name: __cpp_lib_thread_attributes
        value: 202606L

  - desc: "Library Wording Changes for Defaulted Postfix Increment and Decrement Operations"
    paper: P3785
    lib: true