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[dcl.spec.general,dcl.fct.spec] Clarify duplication of decl-specifiers #4834

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Sep 26, 2024
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[dcl.spec.general,dcl.fct.spec] Clarify duplication of decl-specifiers #4834

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9 changes: 6 additions & 3 deletions source/declarations.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -285,9 +285,9 @@
same type.

\pnum
Each \grammarterm{decl-specifier}
shall appear at most once in a complete \grammarterm{decl-specifier-seq},
except that \tcode{long} may appear twice.
At most one of each of the \grammarterm{decl-specifier}s
\keyword{friend}, \keyword{typedef}, or \keyword{inline}
shall appear in a \grammarterm{decl-specifier-seq}.
At most one of
the \keyword{constexpr}, \keyword{consteval}, and \keyword{constinit} keywords
shall appear in a \grammarterm{decl-specifier-seq}.
Expand Down Expand Up @@ -518,6 +518,9 @@
A
\grammarterm{function-specifier}
can be used only in a function declaration.
At most one \grammarterm{explicit-specifier} and
at most one \keyword{virtual} keyword shall appear in
a \grammarterm{decl-specifier-seq}.

\begin{bnf}
\nontermdef{function-specifier}\br
Expand Down