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Use strlen when possible in fallback basic_string_view

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Victor Zverovich
2021-03-28 08:01:55 -07:00
parent 4f8778bab9
commit ec5315a987
1 changed files with 6 additions and 2 deletions
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8
include/fmt/core.h
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@ -395,8 +395,12 @@ template <typename Char> class basic_string_view {
#if __cplusplus >= 201703L // C++17's char_traits::length() is constexpr.
FMT_CONSTEXPR
#endif
FMT_INLINE basic_string_view(const Char* s)
: data_(s), size_(std::char_traits<Char>::length(s)) {}
FMT_INLINE basic_string_view(const Char* s) : data_(s) {
if (std::is_same<Char, char>::value)
size_ = std::strlen(reinterpret_cast<const char*>(s));
else
size_ = std::char_traits<Char>::length(s);
}
/** Constructs a string reference from a ``std::basic_string`` object. */
template <typename Traits, typename Alloc>