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c-family, docs: Adjust descriptions/documentation for C23 publication

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As C23 has been published already https://www.iso.org/standard/82075.html
we don't need to say that it is expected to be published etc.

Furthermore, standards.texi was still documenting that -std=gnu17
is the default.

2024-11-21  Jakub Jelinek  <jakub@redhat.com>

gcc/
	* doc/invoke.texi (-std=c23): Adjust documentation for
	publication of the ISO/IEC 9899:2024 standard.
	* doc/standards.texi: Likewise.  Document -std=gnu17 and
	-std=gnu23 options.  Mention that -std=gnu23 rather than
	-std=gnu17 is now the default for C.
gcc/c-family/
	* c.opt (std=c23, std=gnu23, std=iso9899:2024): Adjust description
	for publication of the ISO/IEC 9899:2024 standard.
This commit is contained in:
Jakub Jelinek 2024-11-21 09:40:37 +01:00 committed by Jakub Jelinek
parent 05ab9447fe
commit ab8d3606bb
3 changed files with 11 additions and 10 deletions
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6
gcc/c-family/c.opt
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@ -2605,7 +2605,7 @@ Conform to the ISO 2017 C standard (published in 2018).
std=c23
C ObjC
Conform to the ISO 2023 C standard draft (expected to be published in 2024).
Conform to the ISO 2023 C standard (published in 2024).
std=c2x
C ObjC Alias(std=c23)
@ -2707,7 +2707,7 @@ Conform to the ISO 2017 C standard (published in 2018) with GNU extensions.
std=gnu23
C ObjC
Conform to the ISO 2023 C standard draft (expected to be published in 2024) with GNU extensions.
Conform to the ISO 2023 C standard (published in 2024) with GNU extensions.
std=gnu2x
C ObjC Alias(std=gnu23)
@ -2763,7 +2763,7 @@ Conform to the ISO 2017 C standard (published in 2018).
std=iso9899:2024
C ObjC Alias(std=c23)
Conform to the ISO 2023 C standard draft (expected to be published in 2024).
Conform to the ISO 2023 C standard (published in 2024).
stdlib=
Driver C++ ObjC++ Common Condition(ENABLE_STDLIB_OPTION) Var(flag_stdlib_kind) Joined Enum(stdlib_kind) RejectNegative Init(1)

4
gcc/doc/invoke.texi
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@ -2479,8 +2479,8 @@ applied with @option{-std=c11}) and a new value of
@item c23
@itemx c2x
@itemx iso9899:2024
ISO C23, the 2023 revision of the ISO C standard (expected to be
published in 2024). The name @samp{c2x} is deprecated.
ISO C23, the 2023 revision of the ISO C standard (published in 2024). The
name @samp{c2x} is deprecated.
@item c2y
The next version of the ISO C standard, still under development. The

11
gcc/doc/standards.texi
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@ -115,8 +115,8 @@ known as @dfn{C17} and is supported with @option{-std=c17} or
@option{-std=c11}, and the only difference between the options is the
value of @code{__STDC_VERSION__}.
A fifth version of the C standard, known as @dfn{C23}, is
expected to be published in 2024 as ISO/IEC 9899:2024.
A fifth version of the C standard, known as @dfn{C23}, was published
in 2024 as ISO/IEC 9899:2024.
(While in development, drafts of this standard version were referred
to as @dfn{C2X}.) Support for this is
enabled with @option{-std=c23} or @option{-std=iso9899:2024}.
@ -136,11 +136,12 @@ Use of the
they conflict with the C standard version selected. You may also
select an extended version of the C language explicitly with
@option{-std=gnu90} (for C90 with GNU extensions), @option{-std=gnu99}
(for C99 with GNU extensions) or @option{-std=gnu11} (for C11 with GNU
extensions).
(for C99 with GNU extensions), @option{-std=gnu11} (for C11 with GNU
extensions), @option{-std=gnu17} (for C17 with GNU extensions) or
@option{-std=gnu23} (for C23 with GNU extensions).
The default, if no C language dialect options are given,
is @option{-std=gnu17}.
is @option{-std=gnu23}.
The ISO C standard defines (in clause 4) two classes of conforming
implementation. A @dfn{conforming hosted implementation} supports the