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Map not int enum to correct underlying_type

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This commit is contained in:
Egor Seredin 2019-08-29 18:14:18 +09:00
parent 9e2490be4c
commit 471dfa4f60
1 changed files with 2 additions and 2 deletions
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4
include/fmt/core.h
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@ -824,8 +824,8 @@ template <typename Context> struct arg_mapper {
FMT_ENABLE_IF(std::is_enum<T>::value &&
!has_formatter<T, Context>::value &&
!has_fallback_formatter<T, Context>::value)>
FMT_CONSTEXPR int map(const T& val) {
return static_cast<int>(val);
FMT_CONSTEXPR auto map(const T& val) -> decltype(map(static_cast<typename std::underlying_type<T>::type>(val))) {
return map(static_cast<typename std::underlying_type<T>::type>(val));
}
template <typename T,
FMT_ENABLE_IF(!is_string<T>::value && !is_char<T>::value &&