```C:\dev> rdmd -m64 --eval="import core.stdc.time; writeln(time_t.sizeof);"
4 ```
According to MSDN this should not be the case: https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/time-time32-time64?view=vs-2019
time is a wrapper for _time64 and **time_t is, by default, equivalent to __time64_t**.
But in Druntime it's defined as a 32-bit type: https://github.com/dlang/druntime/blob/349d63750d55d078426d4f433cba512625f8a3a3/src/core/sys/windows/stdc/time.d#L42
