diff options
Diffstat (limited to 'winsup/cygwin/syscalls.cc')
| -rw-r--r-- | winsup/cygwin/syscalls.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc index 3c0a02671..2077a0a3c 100644 --- a/winsup/cygwin/syscalls.cc +++ b/winsup/cygwin/syscalls.cc @@ -130,7 +130,7 @@ inline int dup_finish (int oldfd, int newfd, int flags) { int res; - if ((res = cygheap->fdtab.dup3 (oldfd, newfd, flags)) == newfd) + if ((res = cygheap->fdtab.dup3 (oldfd, newfd, flags | O_EXCL)) == newfd) { cygheap_fdget (newfd)->inc_refcnt (); cygheap->fdtab.unlock (); /* dup3 exits with lock set on success */ |