Keith Marshall
keith****@users*****
Wed Jul 4 00:01:33 JST 2018
On 02/07/18 23:21, David Gressett wrote: > A brief bit of web searching revealed that ENOTSUP is a POSIX > creation and should be in errno.h There seems to be no standard > numeric value for it. Assigning the value is the prerogative of an implementation; POSIX may require it to be defined, but it never dictates how. > The online Microsoft documentation mentions it, but gives no numeric > value. As Earnie has already noted, there may be none associated. > Looking at the MinGW errno.h, I'm guessing that it has not changed > much in recent years. I suspect that it may now be time for MinGW to > start catching up with POSIX, as the gcc crew may be trying to do > that. We can use strerror() to establish what MSVCRT.DLL knows about arbitrary errno values; last time I tried that, it returned "Unknown error." for all but those values which are already defined in our <errno.h>. That said, ENOTSUP *is* defined (arbitrarily), in the extended <errno.h>, (designated as <ptw32_errno.h>) from our distribution of pthreads-win32, (pthreads-win32-2.10), which we must use in GCC's OpenMP support library (libgomp), so it would make sense for us to adopt the same definition for GCC's liberty implementation. -- Regards, Keith. Public key available from keys.gnupg.net Key fingerprint: C19E C018 1547 DE50 E1D4 8F53 C0AD 36C6 347E 5A3F -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: OpenPGP digital signature Url : https://lists.osdn.me/mailman/archives/mingw-users/attachments/20180703/4eba4061/attachment.pgp
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