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fix #190, #192

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neargye 2022-06-28 14:43:20 +04:00
parent 6956c56033
commit c7cf02053b
1 changed files with 14 additions and 6 deletions
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20
include/magic_enum.hpp
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@ -70,6 +70,7 @@
# pragma warning(disable : 26495) // Variable 'static_string<N>::chars_' is uninitialized.
# pragma warning(disable : 28020) // Arithmetic overflow: Using operator '-' on a 4 byte value and then casting the result to a 8 byte value.
# pragma warning(disable : 26451) // The expression '0<=_Param_(1)&&_Param_(1)<=1-1' is not true at this call.
# pragma warning(disable : 4514) // Unreferenced inline function has been removed.
#endif
// Checks magic_enum compiler compatibility.
@ -760,18 +761,25 @@ constexpr auto calculate_cases(std::size_t Page) noexcept {
std::array<switch_t, 256> result{};
auto fill = result.begin();
for (auto first = values.begin() + Page, last = values.begin() + Page + values_to; first != last; ) {
*fill++ = hash_v<Hash>(*first++);
{
auto first = values.begin() + static_cast<std::ptrdiff_t>(Page);
auto last = values.begin() + static_cast<std::ptrdiff_t>(Page + values_to);
while (first != last) {
*fill++ = hash_v<Hash>(*first++);
}
}
// dead cases, try to avoid case collisions
for (switch_t last_value = result[values_to - 1]; fill != result.end() && last_value != (std::numeric_limits<switch_t>::max)(); *fill++ = ++last_value) {
}
auto it = result.begin();
for (auto last_value = (std::numeric_limits<switch_t>::min)(); fill != result.end(); *fill++ = last_value++) {
while (last_value == *it) {
++last_value, ++it;
{
auto it = result.begin();
auto last_value = (std::numeric_limits<switch_t>::min)();
for (; fill != result.end(); *fill++ = last_value++) {
while (last_value == *it) {
++last_value, ++it;
}
}
}