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[Motions 2022 11 cwg 4] Issues 2615, 2639, 2640, 2652, and 2653 from P2710R0 #5988

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Merged
merged 5 commits into from
Nov 23, 2022
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[Motions 2022 11 cwg 4] Issues 2615, 2639, 2640, 2652, and 2653 from P2710R0 #5988

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82c4158
CWG2615 Missing __has_cpp_attribute(assume)
burblebee Nov 18, 2022
027ad84
CWG2639 new-lines after phase 1
burblebee Nov 18, 2022
10b117e
CWG2640 Allow more characters in an n-char sequence
burblebee Nov 18, 2022
255d8d1
CWG2652 Overbroad definition of __STDCPP_BFLOAT16_T__
burblebee Nov 18, 2022
00b90f3
CWG2653 Can an explicit object parameter have a default argument?
burblebee Nov 18, 2022
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4 changes: 2 additions & 2 deletions source/declarations.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -3387,9 +3387,9 @@
\begin{bnf}
\nontermdef{parameter-declaration}\br
\opt{attribute-specifier-seq} \opt{\keyword{this}} decl-specifier-seq declarator\br
\opt{attribute-specifier-seq} \opt{\keyword{this}} decl-specifier-seq declarator \terminal{=} initializer-clause\br
\opt{attribute-specifier-seq} decl-specifier-seq declarator \terminal{=} initializer-clause\br
\opt{attribute-specifier-seq} \opt{\keyword{this}} decl-specifier-seq \opt{abstract-declarator}\br
\opt{attribute-specifier-seq} \opt{\keyword{this}} decl-specifier-seq \opt{abstract-declarator} \terminal{=} initializer-clause
\opt{attribute-specifier-seq} decl-specifier-seq \opt{abstract-declarator} \terminal{=} initializer-clause
\end{bnf}

The optional \grammarterm{attribute-specifier-seq} in a \grammarterm{parameter-declaration}
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15 changes: 9 additions & 6 deletions source/lex.tex
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Expand Up @@ -82,12 +82,18 @@
then it shall be a well-formed UTF-8 code unit sequence and
it is decoded to produce a sequence of UCS scalar values
that constitutes the sequence of elements of the translation character set.
In the resulting sequence,
each pair of characters in the input sequence consisting of
\unicode{000d}{carriage return} followed by \unicode{000a}{line feed},
as well as each
\unicode{000d}{carriage return} not immediately followed by a \unicode{000a}{line feed},
is replaced by a single new-line character.

For any other kind of input file supported by the implementation,
characters are mapped, in an
\impldef{mapping physical source file characters to translation character set} manner,
to a sequence of translation character set elements\iref{lex.charset}
(introducing new-line characters for end-of-line indicators).
to a sequence of translation character set elements\iref{lex.charset},
representing end-of-line indicators as new-line characters.

\item
\indextext{line splicing}%
Expand Down Expand Up @@ -308,10 +314,7 @@

\begin{bnf}
\nontermdef{n-char} \textnormal{one of}\br
\terminal{A B C D E F G H I J K L M N O P Q R S T U V W X Y Z}\br
\terminal{0 1 2 3 4 5 6 7 8 9}\br
\textnormal{\unicode{002d}{hyphen-minus}}\br
\textnormal{\unicode{0020}{space}}
\textnormal{any member of the translation character set except the \unicode{007d}{right curly bracket} or new-line character}
\end{bnf}

\begin{bnf}
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4 changes: 3 additions & 1 deletion source/preprocessor.tex
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Expand Up @@ -390,6 +390,7 @@
{ll}
\topline
\lhdr{Attribute} & \rhdr{Value} \\ \rowsep
\tcode{assume} & \tcode{202207L} \\
\tcode{carries_dependency} & \tcode{200809L} \\
\tcode{deprecated} & \tcode{201309L} \\
\tcode{fallthrough} & \tcode{201603L} \\
Expand Down Expand Up @@ -1765,7 +1766,8 @@
\mname{STDCPP_BFLOAT16_T}\\
Defined as the integer literal \tcode{1}
if and only if the implementation supports an extended floating-point type
with the properties described in \ref{basic.extended.fp}.
with the properties of the \grammarterm{typedef-name} \tcode{std::bfloat16_t}
as described in \ref{basic.extended.fp}.

\item
\indextext{__time__@\mname{TIME}}%
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