On 26/06/2021 18:22, Manolo wrote: > El 25/06/2021 a las 20:36, Keith Marshall escribió: >> The documentation describes it as a POSIX function, (in name at least, >> and albeit deprecated for use with MSVC), but its behaviour definitely >> does NOT conform to the POSIX.1 specification. >> >> I've written a description of the issue, and proposed corrective action, >> as ticket https://osdn.net/projects/mingw/ticket/42561 > > [...snip...] > > If I code for Windows I expect my app to behave as if I have compiled it > only with MS tools (VC++, etc). If I have a doubt about some command I > usually search for info at MSDN. Okay. If you've followed the discussion on the ticket, you may observe that my preferred work-around will be activated only if <unistd.h> has been included. If you are coding for Microsoft tools, (and Visual C++ in particular), you are unlikely to include that, because Microsoft's closest equivalent is <io.h>. Even if you do include some 3rd party <unistd.h>, it probably will not include the proposed MinGW work-around, so in either case, Microsoft's behaviour will be preserved. If you did happen to include MinGW's <unistd.h>, with the work-around, you could still disable its effect, by adding: #define dup2 dup2 *before* you include <unistd.h>, and again, Microsoft's behaviour would be preserved. > If I code for multiplatform I expect the same behaviour in all OS's. In > case of searching for info, I prefer GNU docs. That may be ill advised: GNU libraries are littered with non-standard, documented embellishments; if you make use of any of them, that could seriously impair portability. My own preference, when coding with portability in mind, is to consult the online POSIX specification: http://pubs.opengroup.org/onlinepubs/9699919799/nframe.html -- 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: OpenPGP_signature Type: application/pgp-signature Size: 840 bytes Desc: OpenPGP digital signature URL: <https://lists.osdn.me/mailman/archives/mingw-users/attachments/20210626/891d1556/attachment.sig>
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