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[over.literal] Mark use of a reserved identifier with 'error'. #4162

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Sep 18, 2020
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[over.literal] Mark use of a reserved identifier with 'error'. #4162

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8 changes: 5 additions & 3 deletions source/overloading.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -4271,9 +4271,11 @@
string operator "" _i18n(const char*, std::size_t); // OK
template <char...> double operator "" _\u03C0(); // OK: UCN for lowercase pi
float operator ""_e(const char*); // OK
float operator ""E(const char*); // error: reserved literal suffix~(\ref{usrlit.suffix}, \ref{lex.ext})
double operator""_Bq(long double); // OK: does not use the reserved identifier \tcode{_Bq}\iref{lex.name}
double operator"" _Bq(long double); // uses the reserved identifier \tcode{_Bq}\iref{lex.name}
float operator ""E(const char*); // ill-formed, no diagnostic required:
// reserved literal suffix~(\ref{usrlit.suffix}, \ref{lex.ext})
double operator""_Bq(long double); // OK: does not use the reserved \grammarterm{identifier} \tcode{_Bq}\iref{lex.name}
double operator"" _Bq(long double); // ill-formed, no diagnostic required:
// uses the reserved \grammarterm{identifier} \tcode{_Bq}\iref{lex.name}
float operator " " B(const char*); // error: non-empty \grammarterm{string-literal}
string operator "" 5X(const char*, std::size_t); // error: invalid literal suffix identifier
double operator "" _miles(double); // error: invalid \grammarterm{parameter-declaration-clause}
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