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Clarify encoding conversion in chrono

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This commit is contained in:
Victor Zverovich 2020-04-27 09:57:08 -07:00
parent 6f435f55c8
commit 4a617f25c6
1 changed files with 2 additions and 0 deletions
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include/fmt/chrono.h
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@ -774,6 +774,8 @@ OutputIt format_duration_unit(OutputIt out) {
if (const char* unit = get_units<Period>()) { if (const char* unit = get_units<Period>()) {
string_view s(unit); string_view s(unit);
if (const_check(std::is_same<Char, wchar_t>())) { if (const_check(std::is_same<Char, wchar_t>())) {
// This works when wchar_t is UTF-32 because units only contain code
// points that have the same values in UTF-16 and UTF-32.
utf8_to_utf16 u(s); utf8_to_utf16 u(s);
return std::copy(u.c_str(), u.c_str() + u.size(), out); return std::copy(u.c_str(), u.c_str() + u.size(), out);
} }