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Disable UDL templates on GCC 9 by default (#1148)

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This commit is contained in:
Victor Zverovich 2019-05-11 08:58:34 -07:00
parent de5da50910
commit a6e8ed15c4
1 changed files with 16 additions and 13 deletions
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29
include/fmt/format.h
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@ -148,15 +148,18 @@ FMT_END_NAMESPACE
# endif
#endif
// EDG C++ Front End based compilers (icc, nvcc) do not currently support UDL
// templates.
#if FMT_USE_USER_DEFINED_LITERALS && FMT_ICC_VERSION == 0 && \
FMT_CUDA_VERSION == 0 && \
((FMT_GCC_VERSION >= 600 && __cplusplus >= 201402L) || \
(defined(FMT_CLANG_VERSION) && FMT_CLANG_VERSION >= 304))
# define FMT_UDL_TEMPLATE 1
#else
# define FMT_UDL_TEMPLATE 0
#ifndef FMT_USE_UDL_TEMPLATE
// EDG front end based compilers (icc, nvcc) do not support UDL templates yet
// and GCC 9 warns about them.
# if FMT_USE_USER_DEFINED_LITERALS && FMT_ICC_VERSION == 0 && \
FMT_CUDA_VERSION == 0 && \
((FMT_GCC_VERSION >= 600 && FMT_GCC_VERSION <= 900 && \
__cplusplus >= 201402L) || \
(defined(FMT_CLANG_VERSION) && FMT_CLANG_VERSION >= 304))
# define FMT_USE_UDL_TEMPLATE 1
# else
# define FMT_USE_UDL_TEMPLATE 0
# endif
#endif
#if FMT_HAS_GXX_CXX11 || FMT_HAS_FEATURE(cxx_trailing_return) || \
@ -3570,7 +3573,7 @@ inline std::size_t formatted_size(string_view format_str, const Args&... args) {
#if FMT_USE_USER_DEFINED_LITERALS
namespace internal {
# if FMT_UDL_TEMPLATE
# if FMT_USE_UDL_TEMPLATE
template <typename Char, Char... CHARS> class udl_formatter {
public:
template <typename... Args>
@ -3593,7 +3596,7 @@ template <typename Char> struct udl_formatter {
return format(str, std::forward<Args>(args)...);
}
};
# endif // FMT_UDL_TEMPLATE
# endif // FMT_USE_UDL_TEMPLATE
template <typename Char> struct udl_arg {
const Char* str;
@ -3606,7 +3609,7 @@ template <typename Char> struct udl_arg {
} // namespace internal
inline namespace literals {
# if FMT_UDL_TEMPLATE
# if FMT_USE_UDL_TEMPLATE
template <typename Char, Char... CHARS>
FMT_CONSTEXPR internal::udl_formatter<Char, CHARS...> operator""_format() {
return {};
@ -3630,7 +3633,7 @@ inline internal::udl_formatter<wchar_t> operator"" _format(const wchar_t* s,
std::size_t) {
return {s};
}
# endif // FMT_UDL_TEMPLATE
# endif // FMT_USE_UDL_TEMPLATE
/**
\rst