Erik de Castro Lopo wrote:

Also MSVC fails because src/libFLAC/include/private/bitmath.h now
contains "uint32_t long idx" instead of "unsigned long idx".

Ah, missed that because it was MSVC code. They should be `uint64_t`.

No, sizeof(unsigned long) is always 4 on Windows.
See http://www.viva64.com/en/t/0012/

According to MSDN _BitScanReverse*() functions have signatures:
unsigned char _BitScanReverse(unsigned long *, unsigned long);
unsigned char _BitScanReverse64(unsigned long *, unsigned __int64);

The `unsigned long` type should be synonymous with `uint64_t` so using
`uint64_t` should be safe. Furthermore if they aren't synonymous we
*want* that to be a compile error!

It's synonymous to uint32_t, but if the 1st parameter for _BitScanReverse*()
functions has 'pointer to unsigned long' type then IMHO it's better to
simply use unsigned long variable there.
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