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Fix a Y2038 bug in timeToFILETIME

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The old code truncated time_t to a 32-bit value
when using Int32x32To64. This example code has been fixed
on MSDN a while ago, so this change only updates it to
the current version.

More on this issue:
https://cookieplmonster.github.io/2022/02/17/year-2038-problem/
This commit is contained in:
Silent 2022-05-22 16:14:56 +02:00
parent cd6805e94d
commit 4f0824fd76
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1 changed files with 4 additions and 4 deletions
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8
include/ghc/filesystem.hpp
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@ -2241,10 +2241,10 @@ GHC_INLINE time_t timeFromFILETIME(const FILETIME& ft)
GHC_INLINE void timeToFILETIME(time_t t, FILETIME& ft)
{
LONGLONG ll;
ll = Int32x32To64(t, 10000000) + 116444736000000000;
ft.dwLowDateTime = static_cast<DWORD>(ll);
ft.dwHighDateTime = static_cast<DWORD>(ll >> 32);
ULARGE_INTEGER ull;
ull.QuadPart = static_cast<ULONGLONG>((t * 10000000LL) + 116444736000000000LL);
ft.dwLowDateTime = ull.LowPart;
ft.dwHighDateTime = ull.HighPart;
}
template <typename INFO>