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Lines Matching defs:dup2

28 #undef dup2
75   /* If fd is closed, mingw hangs on dup2 (fd, fd).  If fd is open,
76      dup2 (fd, fd) returns 0, but all further attempts to use fd in
77      future dup2 calls will hang.  */
104 # define dup2 ms_windows_dup2
144   dupfd = dup2 (fd, desired_fd);
156 # define dup2 klibc_dup2
165   /* On Linux kernels 2.6.26-2.6.29, dup2 (fd, fd) returns -EBADF.
166      On Cygwin 1.5.x, dup2 (1, 1) returns 0.
167      On Cygwin 1.7.17, dup2 (1, -1) dumps core.
168      On Cygwin 1.7.25, dup2 (1, 256) can dump core.
169      On Haiku, dup2 (fd, fd) mistakenly clears FD_CLOEXEC.  */
179   result = dup2 (fd, desired_fd);