https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62215
--- Comment #6 from Janne Blomqvist <jb at gcc dot gnu.org> --- (In reply to Steve Kargl from comment #3) > Not having a copyright assignment won't interfere with this > patch being applied. I'm waiting for confirmation from Janne > that I can revert the changes in his previous patch. I don't remember, but I guess I read the description from the POSIX standard and assumed non-POSIX systems would behave the same way. But now that I look at C11 (n1570.pdf) it says that if *new exists the behavior is implementation-defined. So please go ahead and commit the patch to trunk and 4.9. As for the #ifdef stuff, instead of trying to enumerate all non-POSIX systems one could go the other way instead, e.g. something like #if not defined(__unix__) || not defined(_POSIX_VERSION) ... unlink stuff #endif (See http://sourceforge.net/p/predef/wiki/Home/ for lists of various pre-defined macros) That would save an extra syscall on POSIX systems, but I don't think it really matters, so do as you see fit.
