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Remove UDLs on GCC before 4.9 to simplify things

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GCC before 4.9 rejects the syntax that is now
rejected on more modern compilers.
This commit is contained in:
Dana Jansens 2023-08-24 22:13:57 -04:00 committed by GitHub
parent b84b3bed47
commit a35c30e844
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1 changed files with 1 additions and 11 deletions
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12
include/fmt/format.h
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@ -155,18 +155,12 @@ FMT_END_NAMESPACE
//
// GCC before 4.9 requires a space in `operator"" _a` which is invalid in later
// compiler versions.
# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \
# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 409 || \
FMT_MSC_VERSION >= 1900) && \
(!defined(__EDG_VERSION__) || __EDG_VERSION__ >= /* UDL feature */ 480)
# define FMT_USE_USER_DEFINED_LITERALS 1
# if FMT_GCC_VERSION > 0 && FMT_GCC_VERSION < 409
# define FMT_WHITESPACE_IN_USER_DEFINED_LITERALS 1
# else
# define FMT_WHITESPACE_IN_USER_DEFINED_LITERALS 0
# endif
# else
# define FMT_USE_USER_DEFINED_LITERALS 0
# define FMT_WHITESPACE_IN_USER_DEFINED_LITERALS 0
# endif
#endif
@ -4436,10 +4430,6 @@ template <detail_exported::fixed_string Str> constexpr auto operator""_a() {
using char_t = remove_cvref_t<decltype(Str.data[0])>;
return detail::udl_arg<char_t, sizeof(Str.data) / sizeof(char_t), Str>();
}
# elif FMT_WHITESPACE_IN_USER_DEFINED_LITERALS
constexpr auto operator"" _a(const char* s, size_t) -> detail::udl_arg<char> {
return {s};
}
# else
constexpr auto operator""_a(const char* s, size_t) -> detail::udl_arg<char> {
return {s};