features_c99.yaml

---
features:
  - desc: "Universal-character-names in [identifiers](https://cppreference.com/c/language/identifiers)"
    summary: "Non-basic characters in identifiers via universal-character-names."
    support:
      - GCC 3.1
      - Clang
      - MSVC
      - Xcode
    content: c-universal-character-names.md
  - desc: "Increased [translation limits](https://cppreference.com/c/language/identifiers#Translation_limits)"
    summary: "Raised minimum translation limits for portable programs."
    paper: N590
    support:
      - GCC
      - Clang
      - Xcode
      - owcc
      - TinyCC
    content: c-translation-limits.md
  - desc: "`//` comments"
    paper: N644
    content: c-line-comments.md
    support:
      - GCC
      - Clang
      - MSVC
      - Xcode
      - owcc
      - TinyCC
  - desc: "`restrict` pointers"
    paper: N448
    content: c-restrict.md
    support:
      - GCC
      - Clang
      - MSVC (partial)
      - Xcode 13
      - owcc (partial)
      - TinyCC
    hints:
      - target: MSVC
        msg: "Requires /std:c11 or later."
      - target: owcc
        msg: "`parsed with -zastd=c99 (for wcc*), but does not change the code."
  - desc: "Enhanced [arithmetic types](https://cppreference.com/c/language/arithmetic_types)"
    paper:
      - N815
      - N601
      - N620
      - N638
      - N657
      - N694
      - N809
    support:
      - GCC
      - Clang (partial)
      - Xcode (partial)
  - desc: "Flexible array members"
    content: c-flexible-array.md
    support:
      - GCC 3
      - Clang
      - Xcode
      - owcc
      - TinyCC
  - desc: "[Variable-length array](https://cppreference.com/c/language/array#Variable-length_arrays) (VLA) types"
    paper: N683
    content: c-vla.md
    support:
      - GCC
      - Clang
      - Xcode 14
      - TinyCC
  - desc: "[Variably-modified](https://cppreference.com/c/language/array#Variable-length_arrays) (VM) types"
    paper: N683
    content: c-vm-types.md
    support:
      - GCC
      - Clang
      - Xcode
      - TinyCC 0.9.28
  - desc: "Designated initializers"
    paper: N494
    content: c-designated-init.md
    support:
      - GCC 3
      - Clang
      - MSVC
      - Xcode 14
      - owcc 1.4
  - desc: "Non-constant initializers"
    summary: "Non-constant initializers for block-scope aggregates."
    support:
      - GCC
      - owcc (partial)
    hints:
      - target: owcc
        msg: "Requires -aa for wcc*."
    content: c-non-constant-initializers.md
  - desc: "Idempotent cvr-qualifiers"
    summary: "Repeated cvr-qualifiers on a type are idempotent."
    paper: N505
    support:
      - GCC 3
      - Clang
      - Xcode
    content: c-idempotent-qualifiers.md
  - desc: "Trailing comma in _enumerator-list_"
    summary: "A comma is allowed after the last enumerator."
    support:
      - GCC
      - Clang
      - MSVC
      - Xcode
      - owcc
      - TinyCC
    content: c-enum-trailing-comma.md
  - desc: "Hexadecimal [floating constants](https://cppreference.com/c/language/floating_constant)"
    paper: N308
    content: c-hex-float.md
    support:
      - GCC 2.8
      - Clang
      - MSVC
      - Xcode
      - owcc
      - TinyCC
  - desc: "[Compound literals](https://cppreference.com/c/language/compound_literal)"
    paper: N716
    content: c-compound-literals.md
    support:
      - GCC 3.1
      - Clang
      - MSVC
      - Xcode 14
  - desc: "Floating-point environment"
    summary: "Runtime access to the floating-point environment."
    support:
      - GCC (partial)
      - Clang (partial)
      - Xcode 14 (partial)
    content: c-fenv.md
  - desc: "Requiring truncation for divisions of signed integer types"
    summary: "Signed integer division must truncate toward zero."
    paper: N617
    support:
      - GCC
      - Clang
      - Xcode
    content: c-integer-division-truncation.md
  - desc: "Implicit `return 0;` in the [`main()` function](https://cppreference.com/c/language/main_function)"
    summary: "Reaching the end of `main` returns zero implicitly."
    support:
      - GCC
      - Clang
      - MSVC
      - Xcode
      - owcc 1.5
      - TinyCC
    content: c-implicit-return-main.md
  - desc: "Declarations and statements in mixed order"
    summary: "Declarations and statements may interleave within a block."
    paper: N740
    support:
      - GCC 3
      - Clang
      - MSVC
      - Xcode 14
      - owcc
      - TinyCC
    content: c-mixed-declarations.md
  - desc: "_init-statement_ in `for` loops"
    summary: "Declaring loop counters in a `for` statement's init clause."
    support:
      - GCC
      - Clang
      - MSVC
      - Xcode
      - owcc
      - TinyCC
    content: c-for-loop-declarations.md
  - desc: "`inline` functions"
    paper: N741
    content: c-inline.md
    support:
      - GCC 4.3
      - Clang
      - MSVC
      - Xcode 14
      - owcc 1.3
      - TinyCC
  - desc: "Predefined variable `__func__`"
    paper: N611
    content: c-func.md
    support:
      - GCC 3
      - Clang
      - MSVC
      - Xcode 14
      - owcc 1.2
      - TinyCC
  - desc: "Cvr-qualifiers and `static` in `[]` within function declarations"
    summary: "Qualifiers and `static` array sizes in function parameters."
    support:
      - GCC 3.1
      - Clang
      - Xcode
    content: c-array-parameter-qualifiers.md
  - desc: "[Variadic macros](https://cppreference.com/c/preprocessor/replace)"
    paper: N707
    content: c-variadic-macros.md
    support:
      - GCC 3
      - Clang
      - MSVC
      - Xcode 14
      - owcc
      - TinyCC
  - desc: "`_Pragma` preprocessor operator"
    summary: "Emits a pragma from within a macro expansion."
    paper: N634
    support:
      - GCC 3
      - Clang
      - MSVC (partial)
      - Xcode 14
      - owcc
    hints:
      - target: MSVC
        msg: "Requires /std:c11 or later."
    content: c-pragma-operator.md
  - desc: "Standard pragmas for floating-point evaluation"
    summary: "Standard `STDC` pragmas controlling floating-point code generation."
    paper:
      - N631
      - N696
    support:
      - Clang (partial)
      - Xcode (partial)
      - owcc (partial)
    hints:
      - target: Clang
        msg: "`STDC FENV_ACCESS ON` is not supported."
      - target: Xcode
        msg: "`STDC FENV_ACCESS ON` is not supported."
      - target: owcc
        msg: "`parsed, but does not change the code."
    content: c-fp-pragmas.md