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Refer to C++20

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I noticed a bunch of references to c++2a.

	gcc/
	* doc/invoke.texi: Refer to c++20
This commit is contained in:
Nathan Sidwell 2020-08-03 13:06:06 -07:00
parent f2f4212e20
commit 73e8941488
1 changed files with 7 additions and 7 deletions
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14
gcc/doc/invoke.texi
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@ -2833,7 +2833,7 @@ This flag is enabled by default for @option{-std=c++17}.
@itemx -fno-char8_t
@opindex fchar8_t
@opindex fno-char8_t
Enable support for @code{char8_t} as adopted for C++2a. This includes
Enable support for @code{char8_t} as adopted for C++20. This includes
the addition of a new @code{char8_t} fundamental type, changes to the
types of UTF-8 string and character literals, new signatures for
user-defined literals, associated standard library updates, and new
@ -2899,10 +2899,10 @@ exhaustion is signalled by throwing @code{std::bad_alloc}. See also
@itemx -fconcepts-ts
@opindex fconcepts
@opindex fconcepts-ts
Below @option{-std=c++2a}, @option{-fconcepts} enables support for the
Below @option{-std=c++20}, @option{-fconcepts} enables support for the
C++ Extensions for Concepts Technical Specification, ISO 19217 (2015).
With @option{-std=c++2a} and above, Concepts are part of the language
With @option{-std=c++20} and above, Concepts are part of the language
standard, so @option{-fconcepts} defaults to on. But the standard
specification of Concepts differs significantly from the TS, so some
constructs that were allowed in the TS but didn't make it into the
@ -3286,7 +3286,7 @@ about ABI tags.
@opindex Wcomma-subscript
@opindex Wno-comma-subscript
Warn about uses of a comma expression within a subscripting expression.
This usage was deprecated in C++2a. However, a comma expression wrapped
This usage was deprecated in C++20. However, a comma expression wrapped
in @code{( )} is not deprecated. Example:
@smallexample
@ -3298,7 +3298,7 @@ void f(int *a, int b, int c) @{
@end group
@end smallexample
Enabled by default with @option{-std=c++2a}.
Enabled by default with @option{-std=c++20}.
@item -Wctor-dtor-privacy @r{(C++ and Objective-C++ only)}
@opindex Wctor-dtor-privacy
@ -3819,7 +3819,7 @@ non-class type, @code{volatile}-qualified function return type,
@code{volatile}-qualified parameter type, and structured bindings of a
@code{volatile}-qualified type. This usage was deprecated in C++20.
Enabled by default with @option{-std=c++2a}.
Enabled by default with @option{-std=c++20}.
@item -Wzero-as-null-pointer-constant @r{(C++ and Objective-C++ only)}
@opindex Wzero-as-null-pointer-constant
@ -6273,7 +6273,7 @@ This is the warning level of @option{-Wshift-overflow} and is enabled
by default in C99 and C++11 modes (and newer). This warning level does
not warn about left-shifting 1 into the sign bit. (However, in C, such
an overflow is still rejected in contexts where an integer constant expression
is required.) No warning is emitted in C++2A mode (and newer), as signed left
is required.) No warning is emitted in C++20 mode (and newer), as signed left
shifts always wrap.
@item -Wshift-overflow=2